Organization
Graduate School of Science Associate professor
Graduate School
Graduate School of Science
Undergraduate School
School of Science Department of Physics
Title
Associate professor
KOBAYASHI Hiroshi
Degree 1
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Ph. D. （ 2004.3 Tokyo Institute of Technology ）
Research Areas 3
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Natural Science / Astronomy / Astronomy
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Natural Science / Space and planetary sciences / Planetary Science
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Natural Science / Space and planetary sciences
Papers 87
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Rapid Formation of Gas-giant Planets via Collisional Coagulation from Dust Grains to Planetary Cores Reviewed
Kobayashi, Hiroshi; Tanaka, Hidekazu
ASTROPHYSICAL JOURNAL Vol. 922 page： id. 16 2021.11
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Formation of planetary atmospheres. Analytical estimation of vapor production via planetary impacts Reviewed
Miyayama, Ryushi; Kobayashi, Hiroshi
Astronomy & Astrophysics Vol. 688 page： A103 2024.8
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Frequencies of Warm Debris Disks Based on Point Source Catalogs of Spitzer, WISE, and Gaia Reviewed
Mizuki, Toshiyuki; Momose, Munetake; Aizawa, Masataka; Kobayashi, Hiroshi
The Astronomical Journal Vol. 167 ( 6 ) page： 275 2024.6
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Kadono, T; Kobayashi, H; Yokoyama, M
ASTROPHYSICAL JOURNAL Vol. 960 ( 1 ) 2024.1
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A Primordial Origin for the Gas-rich Debris Disks around Intermediate-mass Stars Reviewed International coauthorship
Nakatani, R; Turner, NJ; Hasegawa, Y; Cataldi, G; Aikawa, Y; Marino, S; Kobayashi, H
Vol. 959 ( 2 ) 2023.12
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Hiroshi Kobayashi, Hidekazu Tanaka
ASTROPHYSICAL JOURNAL Vol. 954 ( 2 ) 2023.9
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Dust Enrichment and Grain Growth in a Smooth Disk around the DG Tau Protostar Revealed by ALMA Triple Bands Frequency Observations Reviewed International coauthorship
Ohashi, S., Momose, M., Kataoka, A., Higuchi, A.E., Tsukagoshi, T., Ueda, T., Codella, C., Podio, L., Hanawa, T., Sakai, N., Kobayashi, H., Okuzumi, S., and Tanaka, H.
The Astrophysical Journal Vol. 954 ( 2 ) page： 110 2023.9
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A Constraint on the Amount of Hydrogen from the CO Chemistry in Debris Disks Reviewed
Iwasaki, K; Kobayashi, H; Higuchi, AE; Aikawa, Y
ASTROPHYSICAL JOURNAL Vol. 950 ( 1 ) 2023.6
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Heavy-element accretion by proto-Jupiter in a massive planetesimal disc, revisited Reviewed International coauthorship
Shibata, S.; Helled, R.; Kobayashi, H.
Monthly Notices of the Royal Astronomical Society Vol. 519 ( 2 ) page： 1713 - 1731 2023.2
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Collisional Growth and Fragmentation of Dust Aggregates. II. Mass Distribution of Icy Fragments Reviewed
Hasegawa, Yukihiko; Suzuki, Takeru K.; Tanaka, Hidekazu; Kobayashi, Hiroshi; Wada, Koji
The Astrophysical Journal Vol. 944 ( 1 ) page： id.38 2023.2
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Spitzer/IRS Full Spectral Modeling to Characterize Mineralogical Properties of Silicate Dust in Heavily Obscured AGNs Reviewed
Tsuchikawa, T.; Kaneda, H.; Oyabu, S.; Kokusho, T.; Kobayashi, H.; Toba, Y.
The Astrophysical Journal Vol. 941 ( 1 ) page： id.50 2022.12
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Nonlinear Outcome of Coagulation Instability in Protoplanetary Disks. II. Dust-ring Formation Mediated by Backreaction and Fragmentation Reviewed
Tominaga, Ryosuke T.; Tanaka, Hidekazu; Kobayashi, Hiroshi; Inutsuka, Shu-ichiro
The Astrophysical Journal Vol. 940 ( 2 ) page： id.152 2022.12
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Nonlinear Outcome of Coagulation Instability in Protoplanetary Disks. I. First Numerical Study of Accelerated Dust Growth and Dust Concentration at Outer Radii Reviewed
Tominaga, Ryosuke T.; Kobayashi, Hiroshi; Inutsuka, Shu-ichiro
The Astrophysical Journal Vol. 937 ( 1 ) page： id.21 2022.9
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Formation of Dust Clumps with Sub-Jupiter Mass and Cold Shadowed Region in Gravitationally Unstable Disk around Class 0/I Protostar in L1527 IRS Reviewed International coauthorship
Ohashi, Satoshi; Nakatani, Riouhei; Liu, Hauyu Baobab; Kobayashi, Hiroshi; Zhang, Yichen; Hanawa, Tomoyuki; Sakai, Nami
The Astrophysical Journal Vol. 934 ( 2 ) page： id.163 2022.8
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No Evidence of the Significant Grain Growth but Tentative Discovery of Disk Substructure in a Disk around the Class I Protostar L1489 IRS
Ohashi Satoshi, Kobayashi Hiroshi, Sai Jinshi, Sakai Nami
ASTROPHYSICAL JOURNAL Vol. 933 ( 1 ) 2022.7
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Coagulation Instability in Protoplanetary Disks: A Novel Mechanism Connecting Collisional Growth and Hydrodynamical Clumping of Dust Particles Reviewed
Tominaga, Ryosuke, T.; Inutsuka, Shu-ichiro, Kobayashi, Hiroshi
ASTROPHYSICAL JOURNAL Vol. 923 page： id.34 2021.12
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Effect of Dust Size on the Near-infrared Spectra (1.0-5.0 μm) of Brown Dwarf Atmospheres Reviewed
Sorahana, Satoko; Kobayashi, Hiroshi ; Tanaka, Kyoko K.
ASTROPHYSICAL JOURNAL Vol. 919 page： id. 117 2021.10
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SPH simulations for shape deformation of rubble-pile asteroids through spinup: The challenge for making top-shaped asteroids Ryugu and Bennu Reviewed
Sugiura, Keisuke; Kobayashi, Hiroshi ; Watanabe, Sei-ichiro search by orcid ; Genda, Hidenori search by orcid ; Hyodo, Ryuki ; Inutsuka, Shu-ichiro
Icarus 2021.9
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The Growth of Protoplanets via the Accretion of Small Bodies in Disks Perturbed by the Planetary Gravity Reviewed
Okamura, Tatsuya; Kobayashi, Hiroshi
ASTROPHYSICAL JOURNAL Vol. 916 page： id. 109 2021.8
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A systematic study of silicate absorption features in heavily obscured AGNs observed by Spitzer/IRS Reviewed
Tsuchikawa, T. ; Kaneda, H. ; Oyabu, S. ; Kokusho, T. ; Kobayashi, H. ; Yamagishi, M. ; Toba, Y.
ASTRONOMY & ASTROPHYSICS Vol. 651 page： A117 2021.7
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Photoevaporation of Grain-depleted Protoplanetary Disks around Intermediate-mass Stars: Investigating the Possibility of Gas-rich Debris Disks as Protoplanetary Remnants Reviewed International coauthorship
Nakatani, Riouhei; Kobayashi, Hiroshi; Kuiper, Rolf; Nomura, Hideko; Aikawa, Yuri
ASTROPHYSICAL JOURNAL Vol. 915 page： id. 90 2021.7
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Collisional Growth and Fragmentation of Dust Aggregates with Low Mass Ratios. I. Critical Collision Velocity for Water Ice Reviewed
Hasegawa, Yukihiko; Suzuki, Takeru K.; Tanaka, Hidekazu; Kobayashi, Hiroshi; Wada, Koji
ASTROPHYSICAL JOURNAL Vol. 915 page： id.22 2021.7
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New Growth Mechanism of Dust Grains in Protoplanetary Disks with Magnetically Driven Disk Winds Reviewed
Taki Tetsuo, Kuwabara Koh, Kobayashi Hiroshi, Suzuki Takeru K.
ASTROPHYSICAL JOURNAL Vol. 909 ( 1 ) 2021.3
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Ring Formation by Coagulation of Dust Aggregates in the Early Phase of Disk Evolution around a Protostar Reviewed International coauthorship
Ohashi Satoshi, Kobayashi Hiroshi, Nakatani Riouhei, Okuzumi Satoshi, Tanaka Hidekazu, Murakawa Koji, Zhang Yichen, Liu Hauyu Baobab, Sakai Nami
ASTROPHYSICAL JOURNAL Vol. 907 ( 2 ) 2021.2
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Is water ice an efficient facilitator for dust coagulation? Reviewed
Kimura Hiroshi, Wada Koji, Kobayashi Hiroshi, Senshu Hiroki, Hirai Takayuki, Yoshida Fumi, Kobayashi Masanori, Hong Peng K., Arai Tomoko, Ishibashi Ko, Yamada Manabu
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY Vol. 498 ( 2 ) page： 1801 - 1813 2020.10
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Sample collection from asteroid (162173) Ryugu by Hayabusa2: Implications for surface evolution Reviewed
Morota T., Sugita S., Cho Y., Kanamaru M., Tatsumi E., Sakatanit N., Honda R., Hirata N., Kikuchi H., Yamada M., Yokota Y., Kamedal S., Matsuoka M., Sawada H., Honda C., Kouyama T., Ogawa K., Suzuki H., Yoshioka K., Hayakawa M., Hirata N., Hirabayashi M., Miyamoto H., Michikami T., Hiroi T., Hemmi R., Barnouin O. S., Ernst C. M., Kitazatou K., Nakamura T., Riu L., Senshu H., Kobayashi H., Sasaki S., Komatsu G., Tanabe N., Fujii Y., Irie T., Suemitsu M., Takaki N., Sugimoto C., Yumoto K., Ishida M., Kato H., Moroi K., Domingue D., Michel P., Pilorget C., Iwata T., Abe M., Ohtake M., Nakauchi Y., Tsumura K., Yabuta H., Ishihara Y., Noguchi R., Matsumoto K., Miura A., Namiki N., Tachibana S., Arakawa M., Ikeda H., Wada K., Mizuno T., Hirose C., Hosoda S., Mori O., Shimada T., Soldini S., Tsukizaki R., Yano H., Ozaki M., Takeuchi H., Yamamoto Y., Okada T., Shimaki Y., Shirai K., Iijima Y., Noda H., Kikuchi S., Yamaguchi T., Ogawa N., Ono G., Mimasu Y., Yoshikawa K., Takahashi T., Takei Y., Fujii A., Nakazawa S., Terui F., Tanaka S., Yoshikawa M., Saiki T., Watanabe S., Tsuda Y.
SCIENCE Vol. 368 ( 6491 ) page： 654 - + 2020.5
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High-resolution simulations of catastrophic disruptions: Resultant shape distributions
Sugiura Keisuke, Kobayashi Hiroshi, Inutsuka Shu-ichiro
PLANETARY AND SPACE SCIENCE Vol. 181 2020.2
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Importance of Giant Impact Ejecta for Orbits of Planets Formed during the Giant Impact Era
Kobayashi Hiroshi, Isoya Kazuhide, Sato Yutaro
ASTROPHYSICAL JOURNAL Vol. 887 ( 2 ) 2019.12
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First Subarcsecond Submillimeter-wave [CI] Image of 49 Ceti with ALMA
Higuchi Aya E, Saigo Kazuya, Kobayashi Hiroshi, Iwasaki Kazunari, Momose Munetake, Soon Kang Lou, Sakai Nami, Kunitomo Masanobu, Ishihara Daisuke, Yamamoto Satoshi
ASTROPHYSICAL JOURNAL Vol. 883 ( 2 ) 2019.10
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Collisional elongation: Possible origin of extremely elongated shape of 1I/'Oumuamua
Sugiura Keisuke, Kobayashi Hiroshi, Inutsuka Shu-ichiro
ICARUS Vol. 328 page： 14 - 22 2019.8
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Near- to mid-infrared spectroscopy of the heavily obscured AGN LEDA 1712304 with AKARI/IRC
Tsuchikawa T., Kaneda H., Oyabu S., Kokusho T., Morihana K., Kobayashi H., Yamagishi M., Toba Y.
ASTRONOMY & ASTROPHYSICS Vol. 626 2019.6
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Toward understanding the origin of asteroid geometries Variety in shapes produced by equal-mass impacts
Sugiura K, Kobayashi H, Inutsuka S
ASTRONOMY & ASTROPHYSICS Vol. 620 2018.12
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Collisional Disruption of Planetesimals in the Gravity Regime with iSALE Code: Comparison with SPH code for Purely Hydrodynamic Bodies Reviewed
Ryo Suetsugu, Hidekazu Tanaka, Hiroshi Kobayashi, Hidenori Genda
Icarus Vol. 314 page： 121-132 2018.11
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From Planetesimal to Planet in Turbulent Disks. II. Formation of Gas Giant Planets
Kobayashi Hiroshi, Tanaka Hidekazu
ASTROPHYSICAL JOURNAL Vol. 862 ( 2 ) 2018.8
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Star formation induced by cloud-cloud collisions and galactic giant molecular cloud evolution Reviewed
Kobayashi Masato I. N., Kobayashi Hiroshi, Inutsuka Shu-ichiro, Fukui Yasuo
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN Vol. 70 2018.5
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Impact erosion model for gravity-dominated planetesimals Reviewed
H. Genda, T. Fujita, H. Kobayashi, H. Tanaka, R. Suetsugu, Y. Abe
Icarus Vol. 294 page： 234-246 2017.9
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Impact erosion model for gravity-dominated planetesimals
Genda Hidenori, Fujita Tomoaki, Kobayashi Hiroshi, Tanaka Hidekazu, Suetsugu Ryo, Abe Yutaka
ICARUS Vol. 294 page： 234-246 2017.9
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A likely detection of a local interplanetary dust cloud passing near the Earth in the AKARI mid-infrared all-sky map
D. Ishihara, T. Kondo, H. Kaneda, T. Suzuki, K. Nakamichi, S. Takaba, H. Kobayashi, S. Masuda, T. Ootsubo, J. Pyo, T. Onaka
ASTRONOMY & ASTROPHYSICS Vol. 603 2017.7
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Size dependence of dust distribution around the earth orbit Reviewed
T. Ueda, H. Kobayashi, T. Takeuchi, D. Ishihara, T. Kondo, H. Kaneda
Astrophysical Journal Vol. 153 ( 5 ) page： 232 2017.5
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Faint warm debris disks around nearby bright stars explored by AKARI and IRSF Reviewed
Daisuke Ishihara, Nami Takeuchi, Hiroshi Kobayashi, Takahiro Nagayama, Hidehiro Kaneda, Shu-ichiro Inutsuka, Hideaki Fujiwara, Takashi Onaka
Astronomy & Astrophysics Vol. 601 page： A72 2017.5
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Size Dependence of Dust Distribution around the Earth Orbit
Ueda Takahiro, Kobayashi Hiroshi, Takeuchi Taku, Ishihara Daisuke, Kondo Toru, Kaneda Hidehiro
ASTRONOMICAL JOURNAL Vol. 153 ( 5 ) 2017.5
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Faint warm debris disks around nearby bright stars explored by AKARI and IRSF
Daisuke Ishihara, Nami Takeuchi, Hiroshi Kobayashi, Takahiro Nagayama, Hidehiro Kaneda, Shu-ichiro Inutsuka, Hideaki Fujiwara, Takashi Onaka
ASTRONOMY & ASTROPHYSICS Vol. 601 page： A72 2017.5
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Detection of Submillimeter-wave [C i] Emission in Gaseous Debris Disks of 49 Ceti and β Pictoris Reviewed
Aya E Higuchi, Aki Sato, Takashi Tsukagoshi, Nami Sakai, Kazunari Iwasaki, Munetake Momose, Hiroshi Kobayashi, Daisuke Ishihara, Sakae Watanabe, Hidehiro Kaneda, Satoshi Yamamoto
Astrophysical Journal Vol. 839 ( 1 ) page： L14 2017.4
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Orbital Evolution of Moons in Weakly Accreting Circumplanetary Disks
Yuri I Fujii, Hiroshi Kobayashi, Sanemichi Z Takahashi, Oliver Gressel
Astronomical Journal Vol. 153 ( 4 ) page： 194 2017.4
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Detection of Submillimeter-wave [CI] Emission in Gaseous Debris Disks of 49 Ceti and beta Pictoris
Aya E. Higuchi, Aki Sato, Takashi Tsukagoshi, Nami Sakai, Kazunari Iwasaki, Munetake Momose, Hiroshi Kobayashi, Daisuke Ishihara, Sakae Watanabe, Hidehiro Kaneda, Satoshi Yamamoto
ASTROPHYSICAL JOURNAL LETTERS Vol. 839 ( 1 ) page： L14 2017.4
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Orbital Evolution of Moons in Weakly Accreting Circumplanetary Disks
Fujii Yuri I., Kobayashi Hiroshi, Takahashi Sanemichi Z., Gressel Oliver
ASTRONOMICAL JOURNAL Vol. 153 ( 4 ) 2017.4
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Evolutionary Description of Giant Molecular Cloud Mass Functions on Galactic Disks Reviewed
Masato I.N. Kobayashi, Shu-ichiro Inutsuka, Hiroshi Kobayashi, Kenji Hasegawa
Astrophysical Journal Vol. 836 ( 2 ) page： 175 2017.2
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Evolutionary Description of Giant Molecular Cloud Mass Functions on Galactic Disks
Masato I. N. Kobayashi, Shu-ichiro Inutsuka, Hiroshi Kobayashi, Kenji Hasegawa
ASTROPHYSICAL JOURNAL Vol. 836 ( 2 ) 2017.2
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Sintering-induced Dust Ring Formation in Protoplanetary Disks: Application to the HL Tau Disk Reviewed
Satoshi Okuzumi, Munetake Momose, Sin-iti Sirono, Hiroshi Kobayashi, Hidekazu Tanaka
Astrophysical Journal Vol. 821 ( 2 ) page： id 82, 24 2016.4
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From Planetesimals to Planets in Turbulent Protoplanetary Disks. I. Onset of Runaway Growth Reviewed
Hiroshi Kobayashi, Hidekazu Tanaka, Satoshi Okuzumi
Astrophysical Journal Vol. 817 ( 2 ) page： id. 105, 10 2016.2
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Resolution Dependence of Disruptive Collisions between Planetesimals in the Gravity Regime Reviewed
H. Genda, T. Fujita, H. Kobayashi, H. Tanaka, Y. Abe
Icarus Vol. 262 page： 58 2015.12
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Comet C/2012 S1 (ISON) coma composition at ~4 au from HST observations Reviewed
E. Zubko, G. Videen, D. C. Hines, Y. Shkuratov, V. Kaydash, K. Muinonen, M. M. Knight, M. L. Sitko, C. M. Lisse, M. Mutchler, D. H. Wooden, J.-Y. Li, H. Kobayashi
Planetary and Space Science Vol. 118 page： 138 2015.12
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Warm Debris Disks Produced by Giant Impacts During Terrestrial Planet Formation
H. Genda, H. Kobayashi, E. Kokubo
Astrophysical Journal Vol. 810 page： 136(8p) 2015.11
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Significant gas-to-dust ratio asymmetry and variation in the disk of HD 142527 and the indication of gas depletion
Takayuki Muto, Takashi Tsukagoshi, Munetake Momose, Tomoyuki Hanawa, Hideko Nomura, Misato Fukagawa, Kazuya Saigo, Akimasa Kataoka, Yoshimi Kitamura, Sanemichi Z Takahashi, Shu-ichiro Inutsuka, Taku Takeuchi, Hiroshi Kobayashi, Eiji Akiyama, Mitsuhiko Honda, Hideaki Fujiwara, Hiroshi Shibai
Publications of the Astronomical Society of Japan page： psv098 2015.11
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Cohesion of Amorphous Silica Spheres: Toward a Better Understanding of The Coagulation Growth of Silicate Dust Aggregates Reviewed
Hiroshi Kimura, Koji Wada, Hiroki Senshu, Hiroshi Kobayashi
Astrophysical Journal Vol. 812 page： 1 2015.10
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Planetary and meteoritic Mg/Si and δ30Si variations inherited from solar nebula chemistry Reviewed
N. Dauphas, F. Poitrasson, C. Burkhardt, H. Kobayashi, K. Kurosawa
Earth and Planetary Science Letter Vol. 427 page： 236 2015.10
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Formation of terrestrial planets in disks evolving via disk winds and implications for the origin of the solar system's terrestrial planets
M. Ogihara, H. Kobayashi, S. Inutsuka, T. Suzuki
Astronomy & Astrophysics Vol. 579 page： A65 2015.6
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Orbital Evolution of Planetesimals in Gaseous Disks
Hiroshi Kobayashi
Earth, Planets and Space Vol. 67 page： 60 2015.4
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Debris disc formation induced by planetary growth Reviewed
Hiroshi Kobayashi, Torsten Loehne
Monthly Notices of the Royal Astronomical Society Vol. 442 ( 4 ) page： 464-8602 2014.8
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N-body Simulations of Terrestrial Planet Formation under the Influence of a Hot Jupiter Reviewed
Ogihara, Masahiro; Kobayashi, Hiroshi; Inutsuka, Shu-ichiro
The Astrophysical Journal Vol. 787 ( 2 ) page： id 172(16p) 2014.6
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Local Enhancement of the Surface Density in the Protoplanetary Ring Surrounding HD 142527 Reviewed
Fukagawa, Misato; Tsukagoshi, Takashi; Momose, Munetake; Saigo, Kazuya; Ohashi, Nagayoshi; Kitamura, Yoshimi; Inutsuka, Shu-ichiro; Muto, Takayuki; Nomura, Hideko; Takeuchi, Taku; Kobayashi, Hiroshi; Hanawa, Tomoyuki; Akiyama, Eiji; Honda, Mitsuhiko; Fujiwara, Hideaki; Kataoka, Akimasa; Takahashi, Sanemichi Z.; Shibai, Hiroshi
Publications of the Astronomical Society of Japan Vol. 65 ( 6 ) page： L14 (5p) 2013.12
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Growth efficiency of dust aggregates through collisions with high mass ratios Reviewed
Wada, Koji; Tanaka, Hidekazu; Okuzumi, Satoshi; Kobayashi, Hiroshi; Suyama, Toru; Kimura, Hiroshi; Yamamoto, Tetsuo
Astronomy & Astrophysics Vol. 559 page： id A62 (8p) 2013.11
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Crowding-out of Giants by Dwarfs: An Origin for the Lack of Companion Planets in Hot Jupiter Systems Reviewed
Ogihara, Masahiro; Inutsuka, Shu-ichiro; Kobayashi, Hiroshi
The Astrophysical Journal Letters Vol. 778 ( 1 ) page： id L9 (5p) 2013.11
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Evolution of dust grain size distribution by shattering in the interstellar medium: Robustness and uncertainty Reviewed
Hirashita, H.; Kobayashi, H.
Earth, Planets and Space Vol. 65 ( 10 ) page： 1083-1094 2013.10
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Condition for Capture into First-order Mean Motion Resonances and Application to Constraints on the Origin of Resonant Systems Reviewed
Ogihara, Masahiro; Kobayashi, Hiroshi
The Astrophysical Journal Vol. 775 ( 1 ) page： id 34 (12p) 2013.9
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Small planetesimals in a massive disk formed Mars Reviewed
Kobayashi, Hiroshi; Dauphas, Nicolas
Icarus Vol. 225 ( 1 ) page： 122-130 2013.7
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Dust mantle of comet 9P/Tempel 1: dynamical constraints on physical properties Reviewed
Kobayashi, H.; Kimura, H.; Yamamoto, S.
Astronomy & Astrophysics Vol. 550 page： id A72 (4p) 2013.2
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Rapid Formation of Saturn after Jupiter Completion Reviewed
Kobayashi, Hiroshi; Ormel, Chris W.; Ida, Shigeru
The Astrophysical Journal Vol. 756 ( 1 ) page： id 70 (7p) 2012.9
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Rapid Coagulation of Porous Dust Aggregates outside the Snow Line: A Pathway to Successful Icy Planetesimal Formation Reviewed
Okuzumi, Satoshi; Tanaka, Hidekazu; Kobayashi, Hiroshi; Wada, Koji
The Astrophysical Journal Vol. 752 ( 2 ) page： id 106 (18p) 2012.6
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An improved model of the Edgeworth-Kuiper debris disk Reviewed
Vitense, Ch.; Krivov, A. V.; Kobayashi, H.; Löhne, T.
Astronomy & Astrophysics Vol. 540 page： id A30 (10p) 2012.4
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Understanding How Planets Become Massive. I. Description and Validation of a New Toy Model Reviewed
Ormel, C. W.; Kobayashi, H.
The Astrophysical Journal Vol. 747 ( 2 ) page： id 115 (21p) 2012.3
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破壊が決める原始惑星の最終質量 Invited Reviewed
小林浩
日本惑星科学会誌「遊星人」 Vol. 20 ( 4 ) page： 317 2011.12
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Sublimation temperature of circumstellar dust particles and its importance for dust ring formation Reviewed
Kobayashi, H.; Kimura, H.; Watanabe, S.-i.; Yamamoto, T.; Müller, S.
Earth, Planets and Space Vol. 63 ( 10 ) page： 1067-1075 2011.10
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Planetary Core Formation with Collisional Fragmentation and Atmosphere to Form Gas Giant Planets Reviewed
Kobayashi, Hiroshi; Tanaka, Hidekazu; Krivov, Alexander V.
The Astrophysical Journal Vol. 738 ( 1 ) page： id 35 (11p) 2011.9
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Planetary growth with collisional fragmentation and gas drag Reviewed
Kobayashi, Hiroshi; Tanaka, Hidekazu; Krivov, Alexander V.; Inaba, Satoshi
Icarus Vol. 209 ( 2 ) page： 836-847 2010.10
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Fragmentation model dependence of collision cascades Reviewed
Kobayashi, Hiroshi; Tanaka, Hidekazu
Icarus Vol. 206 ( 2 ) page： 735-746 2010.4
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Planets in orbit around β Pictoris formed the orbital architecture of planetesimal belts? Reviewed
Kimura, H.; Fukagawa, M.; Tamura, M.; Kobayashi, H.; Yamamoto, T.; Ishii, M.; Suto, H.
Earth, Planets and Space Vol. 62 ( 1 ) page： 111-116 2010.1
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Collisional process on Comet 9/P Tempel 1: mass loss of its dust and ice by impacts of asteroidal objects and its collisional history Reviewed
Yamamoto, S.; Wada, K.; Kobayashi, H.; Kimura, H.; Ishiguro, M.; Matsui, T.
Earth, Planets and Space Vol. 62 ( 1 ) page： 5-11 2010.1
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Ice sublimation of dust particles and their detection in the outer solar system Reviewed
Kobayashi, H.; Kimura, H.; Yamamoto, S.; Watanabe, S.-I.; Yamamoto, T.
Earth, Planets and Space Vol. 62 ( 1 ) page： 57-61 2010.1
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Dust ring formation due to sublimation of dust grains drifting radially inward by the Poynting-Robertson drag: An analytical model Reviewed
Kobayashi, Hiroshi; Watanabe, Sei-ichiro; Kimura, Hiroshi; Yamamoto, Tetsuo
Icarus Vol. 201 ( 1 ) page： 395-405 2009.5
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Dust ring formation due to ice sublimation of radially drifting dust particles under the Poynting Robertson effect in debris disks Reviewed
Kobayashi, Hiroshi; Watanabe, Sei-ichiro; Kimura, Hiroshi; Yamamoto, Tetsuo
Icarus Vol. 195 ( 2 ) page： 871-881 2008.6
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太陽系外縁天体の起源と進化 Invited Reviewed
小林浩
日本惑星科学会誌「遊星人」 Vol. 17 ( 1 ) page： 22 2008.3
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Comet 9P/Tempel 1: Interpretation with the Deep Impact Results Reviewed
Yamamoto, Satoru; Kimura, Hiroshi; Zubko, Evgenij; Kobayashi, Hiroshi; Wada, Koji; Ishiguro, Masateru; Matsui, Takafumi
The Astrophysical Journal Vol. 673 ( 2 ) page： L199-L202 2008.2
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The evidence of an early stellar encounter in Edgeworth Kuiper belt Reviewed
Kobayashi, Hiroshi; Ida, Shigeru; Tanaka, Hidekazu
Icarus Vol. 177 ( 1 ) page： 246-255 2005.9
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Percolation-fission model study of the 1 GeV proton-induced reaction on Pb 208 targets Reviewed
M Katsuma, H Kobayashi, T Sasa, T Sawada
Physical Review C Vol. 71 ( 4 ) page： 044605 2005.4
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なぜ海王星以遠では惑星がないのか? Reviewed
小林 浩，井田 茂
日本惑星科学会誌「遊星人」 Vol. 10 ( 4 ) page： 208 2001.12
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The Effects of a Stellar Encounter on a Planetesimal Disk Reviewed
Kobayashi, Hiroshi; Ida, Shigeru
Icarus Vol. 153 ( 2 ) page： 416-429 2001.10
Books 1
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系外惑星の辞典
青木和光，阿部 豊，生駒大洋，石川遼子，石渡正樹，井田 茂，伊藤祐一，上野雄一郎，臼井寛裕，大西紀和，大宮正士，奥住 聡，門屋辰太郎，木村 淳，葛原昌幸，國友正信，黒崎健二，玄田英典，洪 鵬，小久保英一郎，小谷隆行，小玉貴則，小林 浩，小宮 剛，佐々木貴教，佐藤文衛，渋谷岳造，須田拓馬，住 貴宏，関根康人，千秋博紀，空華智子，髙田将郎，高橋 太，髙橋康人，竹内 拓，竹田洋一，田近英一，橘 省吾，舘野繁彦，田中秀和，田村元秀，長澤真樹子，中本泰史，成田憲保，はしもとじょーじ，橋本 淳，羽馬哲也，濱野景子，原川紘季，原田真理子，樋口有理可，平林 久，深川美里，福井暁彦，藤井友香，藤原英明，堀 安範，前田太郎，増田賢人，町田正博，松尾太郎，眞山 聡，武藤恭之，村上 豪，百瀬宗武，森島龍司，安井千香子 東京大学 矢野太平，薮田ひかる，山岸明彦，山口正輝，吉田 敬（ Role： Joint author）
2016.9
MISC 8
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Impact erosion model for gravity-dominated planetesimals Reviewed
Hidenori Genda, Tomoaki Fujita, Hiroshi Kobayashi, Hidekazu Tanaka, Ryo Suetsugu, Yutaka Abe
ICARUS Vol. 294 page： 234 - 246 2017.9
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A likely detection of a local interplanetary dust cloud passing near the Earth in the AKARI mid-infrared all-sky map
D. Ishihara, T. Kondo, H. Kaneda, T. Suzuki, K. Nakamichi, S. Takaba, H. Kobayashi, S. Masuda, T. Ootsubo, J. Pyo, T. Onaka
ASTRONOMY & ASTROPHYSICS Vol. 603 2017.7
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Faint warm debris disks around nearby bright stars explored by AKARI and IRSF Reviewed
Daisuke Ishihara, Nami Takeuchi, Hiroshi Kobayashi, Takahiro Nagayama, Hidehiro Kaneda, Shu-ichiro Inutsuka, Hideaki Fujiwara, Takashi Onaka
ASTRONOMY & ASTROPHYSICS Vol. 601 page： A72 2017.5
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Faint warm debris disks around nearby bright stars explored by AKARI and IRSF
Daisuke Ishihara, Nami Takeuchi, Hiroshi Kobayashi, Takahiro Nagayama, Hidehiro Kaneda, Shu-ichiro Inutsuka, Hideaki Fujiwara, Takashi Onaka
ASTRONOMY & ASTROPHYSICS Vol. 601 2017.5
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Detection of Submillimeter-wave [CI] Emission in Gaseous Debris Disks of 49 Ceti and beta Pictoris Reviewed
Aya E. Higuchi, Aki Sato, Takashi Tsukagoshi, Nami Sakai, Kazunari Iwasaki, Munetake Momose, Hiroshi Kobayashi, Daisuke Ishihara, Sakae Watanabe, Hidehiro Kaneda, Satoshi Yamamoto
ASTROPHYSICAL JOURNAL LETTERS Vol. 839 ( 1 ) page： L14 2017.4
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Detection of Submillimeter-wave [CI] Emission in Gaseous Debris Disks of 49 Ceti and beta Pictoris
Aya E. Higuchi, Aki Sato, Takashi Tsukagoshi, Nami Sakai, Kazunari Iwasaki, Munetake Momose, Hiroshi Kobayashi, Daisuke Ishihara, Sakae Watanabe, Hidehiro Kaneda, Satoshi Yamamoto
ASTROPHYSICAL JOURNAL LETTERS Vol. 839 ( 1 ) 2017.4
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Evolutionary Description of Giant Molecular Cloud Mass Functions on Galactic Disks
Masato I. N. Kobayashi, Shu-ichiro Inutsuka, Hiroshi Kobayashi, Kenji Hasegawa
ASTROPHYSICAL JOURNAL Vol. 836 ( 2 ) 2017.2
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Evolutionary Description of Giant Molecular Cloud Mass Functions on Galactic Disks Reviewed
Masato I. N. Kobayashi, Shu-ichiro Inutsuka, Hiroshi Kobayashi, Kenji Hasegawa
ASTROPHYSICAL JOURNAL Vol. 836 ( 2 ) page： 175 2017.2
Presentations 48
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Insignificance of Collisional Damping in Debris Disks International conference
Hiroshi Kobayashi
DUST DEVILS WORKSHOP DEBRIS DISKS IN THE SONRAN DESERT 2024.3.27 Steve Ertel (chair, Steward Observatory)
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小林浩
新学術領域「星・惑星形成」2023年度大研究会 2023.12.7 新学術領域「星・惑星形成」
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ダストから惑星までの統一シミュレーションと衝突モデルの再構築
小林浩
研究会「星・惑星形成：これまでの20年間とこれから」
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熱対流を取り扱うためのラグランジュ的流体シミュレーションSPH法コードの開発
高橋航、小林浩、瀬野泉美、犬塚修一郎
日本惑星科学会2023年秋季講演会 2023.10.11 日本惑星科学会
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Shock Pressure Distribution Due to a Planetary Impact International conference
R. Miyayama, H. Kobayashi
55TH DPS MEETING JOINT WITH EPSC 2023.10.3 Division for Planetary Science, American Astronomical Society
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Revealing Habitable Planet Formation via High-Resolution Infrared Observation Invited
2023.9.23
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宮山隆志，小林浩
日本天文学会2023年秋季年会 2023.9.20 日本天文学会
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Importance of collisional sticking of fine particles in debris disks
Hiroshi Kobayashi, Toshihiko Kadono
Cosmic Dust 2023.8.8 Cosmic Dust, SOC and LOC
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Planet Formation and Debris Disk Evolution Invited International conference
Hiroshi Kobayashi
Debris Disk Workshop 2023 2023.3.17 A. Higuchi, H. Kobayashi
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The Amount of Vapor via Collisions Invited International conference
Ryushi Miyayama, Hiroshi Kobayashi
Debris Disk Workshop 2023 2023.3.17 A. Higuchi, H. Kobayashi
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Short-term Brightness Evolution of Debris Disk after Ejection from Giant Impacts Invited International conference
Leonardo da Motta de Vasconcellos Teixeira, Hiroshi Kobayashi
Debris Disk Workshop 2023 2023.3.17 A. Higuchi, H. Kobayashi
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木星形成による雪線内側への氷微惑星輸送
小林浩、安田郁斗
日本天文学会2023年春季年会 2023.3.15 日本天文学会
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小天体衝突が形成する衝撃波圧力分布の状態方程式依存性
宮山隆志，小林浩
日本天文学会2023年春季年会 2023.3.15 日本天文学会
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Planet Formation and Disk Evolution
2023.2.23
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The amount of vapor caused by an impact and its dependence on equation of state International conference
Ryushi Miyayama, Hiroshi Kobayashi
The 9th East Asian Numerical Astrophysics Meeting 2022.9.29 EANAM9 organizers
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Short-term Evolution of Debris Disks formed from a Giant Impact in the Late Stages of Planet Formation International conference
Leonardo Da Motta Vascnoncellos Teixeira, Hiroshi Kobayashi
The 9th East Asian Numerical Astrophysics Meeting 2022.9.29 EANAM9 organizers
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小林 浩
日本惑星科学会2022年秋季講演会 2022.9.21 日本惑星科学会
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木星の氷微惑星散乱による雪線内側への水供給についての理論的研究
安田 郁斗、小林 浩
日本惑星科学会2022年秋季講演会 2022.9.22 日本惑星科学会
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宮山 隆志、小林 浩
日本惑星科学会2022年秋季講演会 2022.9.20 日本惑星科学会
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日本惑星科学会2022年秋季講演会 2022.9.21 日本惑星科学会
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ダストから惑星までの統一シミュレーショ ン : 円盤温度とダスト密度依存性
小林浩
日本天文学会 2022年 秋季年会 2022.9.15 日本天文学会
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ダストの衝突破壊における破片の質量分布と衝突速度と質量比の関係性
長谷川幸彦, 鈴木建, 田中秀和, 小林浩, 和田浩二
日本天文学会 2022年 秋季年会 2022.9.15 日本天文学会
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円盤風を考慮した原始惑星系円盤ガス面密度進化の 1 次元モデル
瀧 哲朗, 小林 浩, 小久保英一郎, 鈴木 建
日本天文学会 2022年 秋季年会 2022.9.15 日本天文学会
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宮山隆志、小林浩
日本天文学会 2022年 秋季年会 2022.9.13 日本天文学会
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Early Formation of Gas Giant Planets Revealed by Dust-to-Planet Simulations Invited International conference
Hiroshi Kobayashi
2022.6.13 Astrophysical International Seminar Kiel
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宮山 隆志、小林 浩
日本地球惑星科学連合2022大会 2022.6.1 日本地球惑星科学連合
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Debris Disks Caused by Giant Impacts and their Time Evolution International conference
Leonardo Da Motta Vasconcellos Teixeira, Hiroshi Kobayashi
Japan Geoscience Union Meeting 2022 2022.5.26 Japan Geoscience Union
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微惑星形成・天体形成/移動 Invited
小林浩
始原天体ワークショップ 2022.3.16
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Early Formation of Gas-Giant Planets Revealed by Dust-to-Planet Simulations
2022.3.14
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Early Formation of Jupiter Revealed by Dust-to-Planet Simulations Invited
2022.3.7
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巨大衝突起源のデブリ円盤の特徴解明に向けた巨大衝突シミュレーション
小林浩
日本天文学会2022年春季年会 2022.3.3 日本天文学会
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地球型惑星形成にともなう大気獲得とその組成進化についての理論的研究
小林浩
第5回 新学術領域研究「水惑星学」全体会議 2022.3.1 新学術領域研究「水惑星学」
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巨大ガス惑星の コア形成理論
小林浩
新学術「星・惑星形成」A02A03合同会議 2022.2.17 新学術領域研究「星・惑星形成」A02班、A03班
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ダストから惑星への統一シミュレーションによる巨大ガス惑星形成
小林浩、田中秀和
日本惑星科学会秋季講演会 2021.9.17 日本惑星科学会
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ダストから惑星まで統一シミュレーション：巨大ガス惑星形成と軌道の分布
小林浩、田中秀和
日本天文学会2021年秋季年会 2021.9.14 日本天文学会
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The Collisional History in the Main Belt International conference
Hiroshi Kobayashi
Japan Geoscience Union Meeting 2021 2021.6.6
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原始惑星重力下での 原始惑星系円盤ガスの流れと小天体の衝突率
小林浩、岡村達弥
日本天文学会2021年春季年会 2021.3.17 日本天文学会
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惑星形成と氷微惑星の移動
小林浩
第4回 新学術領域研究「水惑星学」全体会議 2021.3.8 新学術領域「水惑星」
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Dust in Planet Formation Invited International conference
Hiroshi Kobayashi
PERC Int'l Symposium on Dust & Parent Bodies 2021 2021.2.10
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惑星形成の衝突史解明に向けた はやぶさ2のデータの重要性 Invited
小林浩
「惑星形成過程とはやぶさ２探査」研究会 2021.1.13
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ダストから惑星まで成長を取り扱う 大統一シミュレーション
小林浩、田中秀和
2020年理論懇シンポジウム 2020.12.24 理論天文学宇宙物理学懇談会
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ダストから惑星まで直接合体成長を取り扱う統一シミュレーション
小林浩、田中秀和
2020年度惑星科学会秋季講演会 2020.11.14 日本惑星科学会
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原始惑星系円盤中でのダストから惑星まで一貫した直接合体成長の理論的研究
小林浩、田中秀和
日本天文学会2020年秋季年会 2020.9.10 日本天文学会
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原始惑星重力下での原始惑星系円盤ガスの流れと小天体の衝突率
岡村達弥、小林浩
日本天文学会2020年秋季年会 2020.9.10 日本天文学会
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ダストから惑星への直接合体成長とALMAで観測される原始惑星系円盤の進化
小林 浩、大橋 聡史
JpGU -AGU Joint Meeting 2020 2020.7.15
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Numerical Simulations of Spinup of Asteroids and the Formation of Top-Shaped Asteroids
2020.7
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Collisional Growth and Fragmentation of Dust Aggregates with Low to Very High Mass Ratios
2020.7.15
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地球型惑星形成にともなう大気獲得とその組成進化についての理論的研究
小林浩
新学術「水惑星学」公募班キックオフミーティング 2020.5.11 新学術領域「水惑星」
KAKENHI (Grants-in-Aid for Scientific Research) 12
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Grant number：22H00179 2022.4 - 2026.3
Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A)
Authorship：Coinvestigator(s)
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原始惑星系円盤と系外惑星の統計をつなげる惑星種族合成理論の構築
Grant number：22H01278 2022.4 - 2025.3
科学研究費助成事業 基盤研究(B)
田中 秀和, 長澤 真樹子, 小林 浩, 金川 和弘
Authorship：Coinvestigator(s)
多数の系外巨大惑星と原始惑星系円盤の観測より、これらの統計的性質が明らかになっている。本研究の目的はこれら両者の統計を整合的に説明することにある。本研究では、原始惑星系円盤の初期条件から最終的にどのような巨大惑星が生成されるかを高精度で予言する惑星種族生成計算を確立する。多様な系外巨大惑星すべてを説明する理論を構築することで、太陽系の木星、土星の形成もこの統一的な理論枠組みにより解明することができ、太陽系の他の天体の研究への応用にもつなげる。また、この系外惑星と原始惑星系円盤をつなぐ要請から、不定性の大きい円盤散逸過程へ新たな制限を与えることも試みる。
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Terrestrial Planet Formation with Collisional Fragmentation
Grant number：21K03642 2021.4 - 2025.3
Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)
Authorship：Principal investigator
Grant amount：\4160000 （ Direct Cost: \3200000 、 Indirect Cost：\960000 ）
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Theory on planetary-atmosphere acquisition and evolution during planet formation
Grant number：20H04612 2020.4 - 2022.3
Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)
Authorship：Principal investigator
Grant amount：\2600000 （ Direct Cost: \2000000 、 Indirect Cost：\600000 ）
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Theory for the Formation of Planetary Systems from Diverse Protoplanetary Disks
Grant number：18H05438 2018.6 - 2023.3
Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)
Authorship：Coinvestigator(s)
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Grant number：18H05436 2018.6 - 2023.3
Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)
Authorship：Coinvestigator(s)
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Multicolor anatomy of protorplanetary disks: Towards understanding of planet formation
Grant number：17H01103 2017.4 - 2022.3
Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A)
Authorship：Coinvestigator(s)
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Evolution of protoplanetary discs and planet formation with magnetically driven disc winds
Grant number：17H01105 2017.4 - 2022.3
Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A)
Authorship：Coinvestigator(s)
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Modeling of collisional growth from dust to planets
Grant number：17K05632 2017.4 - 2021.3
Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)
Kobayashi Hiroshi
Authorship：Principal investigator
Grant amount：\4420000 （ Direct Cost: \3400000 、 Indirect Cost：\1020000 ）
Planets are formed from submicron-sized dust grains in a protoplanetary disk. In previous studies, the collisional evolution in a limited mass range, such as only among dust grains or among planetesimals. However, the importance of the wide mass range interaction such as protoplanets and pebbles is argued. Therefore, we develop a simulation code to treat the collisional evolution from dust grains to planet, whose mass range is more than 40 orders of magnitude. As the result of the simulation, we show cores of gas giant planets are formed in several hundred thousand years.
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Theoretical study on an unified process of planetesimal formation and accumulation
Grant number：22540242 2010 - 2012
Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)
TANAKA Hidekazu, KOBAYASHI Hiroshi
Authorship：Other
We investigated the growth process from dust grains to planetesimals and their radial migration, taking into account the evolution of their internal density. Because of their radial migration, solid bodies are concentrated inside of 10AU and grow to km-sized planetesimals. In this planetesimal-forming region, the surface density of the solid component is enhanced by a factor of ～10, compared with the original value. The growing solid bodies have a highly porous structure, which helps their growth to planetesimals. The large enhancement in the solid surface density accelerates growth of cores of Jovian planets.
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Infrared Spectra of Comets as a Barometer for Their Evolution
Grant number：21340040 2009.4 - 2014.3
Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)
KIMURA Hiroshi, KOBAYASHI Hiroshi, WADA Koji
Authorship：Collaborating Investigator(s) (not designated on Grant-in-Aid)
We have found that the fractal dimension of aggregated dust particles in comets determines the strength of peaks characteristic of olivine detected in the infrared spectra of dust in cometary comae, while the volume fraction and carbonization of organic refractory material in the dust aggregates play an important role in the determination of the peak wavelengths. Furthermore, both an increase in the fractal dimension and the carbonization of organic refractory material are associated with the formation of a dust mantle on the surface of a comet. Therefore, the infrared spectra of cometary comae can be regarded as a barometer of the evolution of comets as well as the alteration of comet grain properties. Since the processing of comet dust proceeds with the orbit of the parent-body comet, we expect that a thorough analysis of infrared data will reveal a correlation between the spectral features characteristic of olivine and the orbital semi-major axes of comets.
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Modelling of Collisional Disruption of Planetary Bodies via Large-scale Numerical Simulations
Grant number：26287101 2014.4 - 2018.3
Tanaka Hidekazu
Authorship：Coinvestigator(s)
In this work, by performing a large-scale survey of numerical simulations, we constructed an accurate and unified model of collisional disruption, which is a key process in various studies of planetary sciences. As the numerical methods, we used three kinds of methods, i.e., a SPH code, a mesh (iSALE) code, and a DEM code, which enable us to obtain the total ejecta mass at various impacts for planetary bodies with a wide size range from km-size to 1000km-size.
<BR>
Clarifying the resolution dependence of the collisional disruption, we developed the method to calculate the convergent value at high-resolution limit. From a survey of accurate numerical simulations applied this method to, we obtain a new scaling law of the total ejecta mass, which is valid for a wide range of parameters (sizes of colliding bodies, the impact velocity, and the angle) and succeeded in modelling the collisional disruption. We also applied this new model to Jovian planets formation and obtained constraints on it.
Teaching Experience (On-campus) 5
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物理学演習2
2023
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先端物理特論
2022
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物理学演習2
2022
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物理学演習2
2021
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物理学演習2
2020
Social Contribution 3
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惑星系がどのようにして できたのか？
Role(s)：Lecturer
岐阜北高校 岐阜北高校 2023.6
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惑星系がどのようにして できたのか？
Role(s)：Lecturer
豊橋市知聴覚教育センター・地下資源館 2022.11
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コンピュータで迫る 惑星系の起源
Role(s)：Lecturer
名古屋大学（大学院理学研究科、宇宙地球環境研究所)、名古屋市科学館 第30回公開オンラインセミナー 最新のテクノロジーと宇宙 2022.8