Zobrazeno 1 - 10
of 127
pro vyhledávání: '"KUROKAWA, Hiroyuki"'
Autor:
Kuwahara, Ayumu, Lambrechts, Michiel, Kurokawa, Hiroyuki, Okuzumi, Satoshi, Tanigawa, Takayuki
Publikováno v:
A&A 692, A45 (2024)
The observed dust rings and gaps in protoplanetary disks could be imprints of forming planets. Even low-mass planets in the one-to-ten Earth-mass regime, that do not yet carve deep gas gaps, can generate such dust rings and gaps by driving a radially
Externí odkaz:
http://arxiv.org/abs/2410.16996
Publikováno v:
Icarus, Volume 411, 2024, 115951, ISSN 0019-1035
Carbonaceous chondrites (CCs) are windows into the early Solar system and the histories of their parent bodies. Their infrared spectral signatures are powerful proxies for deciphering their composition and evolution history, but still present formida
Externí odkaz:
http://arxiv.org/abs/2401.07083
Publikováno v:
The Astrophysical Journal, 2024, Volume 963, Number 1
The early solar system contained a short-lived radionuclide, $^{26}$Al (its half-life time $t_{1/2} = 0.7$ Myr). The decay energy $^{26}$Al is thought to have controlled the thermal evolution of planetesimals and, possibly, the water contents of plan
Externí odkaz:
http://arxiv.org/abs/2312.01948
Autor:
Kuwahara, Ayumu, Kurokawa, Hiroyuki
A growing planet embedded in a protoplanetary disk induces three-dimensional gas flow, which exhibits a midplane outflow that can suppress dust accretion onto the planet and form global dust substructures (rings and gaps). Because analytic formulae f
Externí odkaz:
http://arxiv.org/abs/2311.01943
Autor:
Team, GREX-PLUS Science, Inoue, Akio K., Harikane, Yuichi, Moriya, Takashi, Nomura, Hideko, Baba, Shunsuke, Fujii, Yuka, Gouda, Naoteru, Hirahara, Yasuhiro, Kawashima, Yui, Kodama, Tadayuki, Koyama, Yusei, Kurokawa, Hiroyuki, Matsuo, Taro, Matsuoka, Yoshiki, Matsuura, Shuji, Mawatari, Ken, Misawa, Toru, Nagamine, Kentaro, Nakajima, Kimihiko, Notsu, Shota, Ootsubo, Takafumi, Ohno, Kazumasa, Sagawa, Hideo, Shimonishi, Takashi, Tadaki, Ken-ichi, Takami, Michihiro, Terai, Tsuyoshi, Toba, Yoshiki, Yamashita, Takuji, Yasui, Chikako
GREX-PLUS (Galaxy Reionization EXplorer and PLanetary Universe Spectrometer) is a mission candidate for a JAXA's strategic L-class mission to be launched in the 2030s. Its primary sciences are two-fold: galaxy formation and evolution and planetary sy
Externí odkaz:
http://arxiv.org/abs/2304.08104
Publikováno v:
A&A 674, A193 (2023)
We investigate the spin state of a protoplanet during the pebble accretion influenced by the gas flow in the gravitational potential of the protoplanet and how it depends on the planetary mass, the headwind speed, the distance from the host star, and
Externí odkaz:
http://arxiv.org/abs/2303.15098
Publikováno v:
A&A 665, A122 (2022)
Recent high-spatial-resolution observations have revealed dust substructures in protoplanetary disks such as rings and gaps, which do not always correlate with gas. Because radial gas flow induced by low-mass, non-gas-gap-opening planets could affect
Externí odkaz:
http://arxiv.org/abs/2206.13453
Publikováno v:
Scientific Reports, volume 11, Article number: 20894 (2021)
Earth's surface environment is largely influenced by its budget of major volatile elements: carbon (C), nitrogen (N), and hydrogen (H). Although the volatiles on Earth are thought to have been delivered by chondritic materials, the elemental composit
Externí odkaz:
http://arxiv.org/abs/2110.12195
Autor:
Shibuya, Takazo, Sekine, Yasuhito, Kikuchi, Sakiko, Kurokawa, Hiroyuki, Fukushi, Keisuke, Nakamura, Tomoki, Watanabe, Sei-ichiro
Publikováno v:
In Geochimica et Cosmochimica Acta 1 June 2024 374:264-283
Autor:
Kuwahara, Ayumu, Kurokawa, Hiroyuki
Publikováno v:
A&A 643, A21 (2020)
Pebble accretion is one of the major theories in planet formation. Aerodynamically small particles, called pebbles, are highly affected by the gas flow. A growing planet embedded in a protoplanetary disk induces three-dimensional (3D) gas flow. In ou
Externí odkaz:
http://arxiv.org/abs/2009.07636