Zobrazeno 1 - 10
of 132
pro vyhledávání: '"Eiichiro Kokubo"'
Gliese 12 b: A Temperate Earth-sized Planet at 12 pc Ideal for Atmospheric Transmission Spectroscopy
Autor:
Masayuki Kuzuhara, Akihiko Fukui, John H. Livingston, José A. Caballero, Jerome P. de Leon, Teruyuki Hirano, Yui Kasagi, Felipe Murgas, Norio Narita, Masashi Omiya, Jaume Orell-Miquel, Enric Palle, Quentin Changeat, Emma Esparza-Borges, Hiroki Harakawa, Coel Hellier, Yasunori Hori, Kai Ikuta, Hiroyuki Tako Ishikawa, Takanori Kodama, Takayuki Kotani, Tomoyuki Kudo, Juan C. Morales, Mayuko Mori, Evangelos Nagel, Hannu Parviainen, Volker Perdelwitz, Ansgar Reiners, Ignasi Ribas, Jorge Sanz-Forcada, Bun’ei Sato, Andreas Schweitzer, Hugo M. Tabernero, Takuya Takarada, Taichi Uyama, Noriharu Watanabe, Mathias Zechmeister, Néstor Abreu García, Wako Aoki, Charles Beichman, Víctor J. S. Béjar, Timothy D. Brandt, Yéssica Calatayud-Borras, Ilaria Carleo, David Charbonneau, Karen A. Collins, Thayne Currie, John P. Doty, Stefan Dreizler, Gareb Fernández-Rodríguez, Izuru Fukuda, Daniel Galán, Samuel Geraldía-González, Josafat González-Rodríguez, Yuya Hayashi, Christina Hedges, Thomas Henning, Klaus Hodapp, Masahiro Ikoma, Keisuke Isogai, Shane Jacobson, Markus Janson, Jon M. Jenkins, Taiki Kagetani, Eiji Kambe, Yugo Kawai, Kiyoe Kawauchi, Eiichiro Kokubo, Mihoko Konishi, Judith Korth, Vigneshwaran Krishnamurthy, Takashi Kurokawa, Nobuhiko Kusakabe, Jungmi Kwon, Andrés Laza-Ramos, Florence Libotte, Rafael Luque, Alberto Madrigal-Aguado, Yuji Matsumoto, Dimitri Mawet, Michael W. McElwain, Pedro Pablo Meni Gallardo, Giuseppe Morello, Sara Muñoz Torres, Jun Nishikawa, Stevanus K. Nugroho, Masahiro Ogihara, Alberto Peláez-Torres, David Rapetti, Manuel Sánchez-Benavente, Martin Schlecker, Sara Seager, Eugene Serabyn, Takuma Serizawa, Monika Stangret, Aoi Takahashi, Huan-Yu Teng, Motohide Tamura, Yuka Terada, Akitoshi Ueda, Tomonori Usuda, Roland Vanderspek, Sébastien Vievard, David Watanabe, Joshua N. Winn, Maria Rosa Zapatero Osorio
Publikováno v:
The Astrophysical Journal Letters, Vol 967, Iss 2, p L21 (2024)
Recent discoveries of Earth-sized planets transiting nearby M dwarfs have made it possible to characterize the atmospheres of terrestrial planets via follow-up spectroscopic observations. However, the number of such planets receiving low insolation i
Externí odkaz:
https://doaj.org/article/135ed81aa2bf4c638b0d61cbb2f6cc8b
Autor:
Guang-Yao Xiao, Huan-Yu Teng, Jianzhao Zhou, Bun’ei Sato, Yu-Juan Liu, Shaolan Bi, Takuya Takarada, Masayuki Kuzuhara, Marc Hon, Liang Wang, Masashi Omiya, Hiroki Harakawa, Fei Zhao, Gang Zhao, Eiji Kambe, Hideyuki Izumiura, Hiroyasu Ando, Kunio Noguchi, Wei Wang, Meng Zhai, Nan Song, Chengqun Yang, Tanda Li, Timothy D. Brandt, Michitoshi Yoshida, Yoichi Itoh, Eiichiro Kokubo
Publikováno v:
The Astronomical Journal, Vol 167, Iss 2, p 59 (2024)
We present the discoveries of two giant plants orbiting the red-giant-branch star HD 112570 and the red-clump star HD 154391, based on the radial-velocity (RV) measurements from the Xinglong station and Okayama Astrophysical Observatory. Spectroscopi
Externí odkaz:
https://doaj.org/article/2fddf3752d464a048cb25d515ceb9460
Autor:
Sota Arakawa, Satoshi Okuzumi, Misako Tatsuuma, Hidekazu Tanaka, Eiichiro Kokubo, Daisuke Nishiura, Mikito Furuichi, Taishi Nakamoto
Publikováno v:
The Astrophysical Journal Letters, Vol 951, Iss 1, p L16 (2023)
Understanding the collisional behavior of dust aggregates is essential in the context of planet formation. It is known that low-velocity collisions of dust aggregates result in bouncing rather than sticking when the filling factor of colliding dust a
Externí odkaz:
https://doaj.org/article/26001b810d65411eb5fa66ef04d924f3
Autor:
Doris Arzoumanian, Sota Arakawa, Masato I. N. Kobayashi, Kazunari Iwasaki, Kohei Fukuda, Shoji Mori, Yutaka Hirai, Masanobu Kunitomo, M. S. Nanda Kumar, Eiichiro Kokubo
Publikováno v:
The Astrophysical Journal Letters, Vol 947, Iss 2, p L29 (2023)
Cylindrical molecular filaments are observed to be the main sites of Sunlike star formation, while massive stars form in dense hubs at the junction of multiple filaments. The role of hub–filament configurations has not been discussed yet in relatio
Externí odkaz:
https://doaj.org/article/c4765dda7b4042aa8f8d2d4f64d4db52
Autor:
Kangrou Guo, Eiichiro Kokubo
Publikováno v:
The Astrophysical Journal, Vol 955, Iss 2, p 109 (2023)
We investigate the orbital evolution of planetesimals in the inner disk in the presence of nebula gas and a (proto-) cold Jupiter. By varying the mass, eccentricity, and semimajor axis of the planet, we study the dependence of the relative velocities
Externí odkaz:
https://doaj.org/article/d55eba57929a4c728b9e9c258ee58ff6
Autor:
Taichi Uyama, Charles Beichman, Masayuki Kuzuhara, Markus Janson, Takayuki Kotani, Dimitri Mawet, Bun’ei Sato, Motohide Tamura, Hiroyuki Tako Ishikawa, Bryson Cale, Thayne Currie, Hiroki Harakawa, Thomas Henning, Teruyuki Hirano, Klaus Hodapp, Yasunori Hori, Masato Ishizuka, Shane Jacobson, Yui Kasagi, Eiichiro Kokubo, Mihoko Konishi, Tomoyuki Kudo, Takashi Kurokawa, Nobuhiko Kusakabe, Jungmi Kwon, Masahiro Machida, Takao Nakagawa, Norio Narita, Jun Nishikawa, Masahiro Ogihara, Masashi Omiya, Takuma Serizawa, Akitoshi Ueda, Sébastien Vievard, Ji Wang
Publikováno v:
The Astronomical Journal, Vol 165, Iss 4, p 162 (2023)
The Subaru telescope is currently performing a strategic program (SSP) using the high-precision near-infrared (NIR) spectrometer IRD to search for exoplanets around nearby mid/late M dwarfs via radial velocity (RV) monitoring. As part of the observin
Externí odkaz:
https://doaj.org/article/32ffc418a6984a488af09dcb9d6d6a68
Autor:
Teruyuki Hirano, Fei Dai, John H. Livingston, Sascha Grziwa, Kristine W. F. Lam, Yui Kasagi, Norio Narita, Hiroyuki Tako Ishikawa, Kohei Miyakawa, Luisa M. Serrano, Yuji Matsumoto, Eiichiro Kokubo, Tadahiro Kimura, Masahiro Ikoma, Joshua N. Winn, John P. Wisniewski, Hiroki Harakawa, Huan-Yu Teng, William D. Cochran, Akihiko Fukui, Davide Gandolfi, Eike W. Guenther, Yasunori Hori, Kai Ikuta, Kiyoe Kawauchi, Emil Knudstrup, Judith Korth, Takayuki Kotani, Vigneshwaran Krishnamurthy, Tomoyuki Kudo, Takashi Kurokawa, Masayuki Kuzuhara, Rafael Luque, Mayuko Mori, Jun Nishikawa, Masashi Omiya, Jaume Orell-Miquel, Enric Palle, Carina M. Persson, Seth Redfield, Eugene Serabyn, Alexis M. S. Smith, Aoi Takahashi, Takuya Takarada, Akitoshi Ueda, Vincent Van Eylen, Sébastien Vievard, Motohide Tamura, Bun’ei Sato
Publikováno v:
The Astronomical Journal, Vol 165, Iss 3, p 131 (2023)
We report on the discovery of an Earth-sized transiting planet ( R _p = 1.015 ± 0.051 R _⊕ ) in a P = 4.02 day orbit around K2-415 (EPIC 211414619), an M5V star at 22 pc. The planet candidate was first identified by analyzing the light-curve data
Externí odkaz:
https://doaj.org/article/9f7cfa332b5240599861736e80a45a68
Publikováno v:
The Astrophysical Journal, Vol 945, Iss 2, p 120 (2023)
We investigate the gravitational instability (GI) of dust ring structures and the formation of planetesimals by their gravitational collapse. The normalized dispersion relation of a self-gravitating ring structure includes two parameters that are rel
Externí odkaz:
https://doaj.org/article/221af9e10a6e43a78a16f5b0dca5deab
Autor:
Yuki Yoshida, Eiichiro Kokubo
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 521:4091-4099
The swing amplification is one of the mechanisms for spiral arm formation and gravitational scattering of stellar orbits by a high-density region in a disc galaxy is considered as its elementary process. During the swing amplification, the epicycle p
Autor:
Heike Rauer, Michel Blanc, Julia Venturini, Véronique Dehant, Brice Demory, Caroline Dorn, Shawn Domagal-Goldman, Bernard Foing, B. Scott Gaudi, Ravit Helled, Kevin Heng, Daniel Kitzman, Eiichiro Kokubo, Louis Le Sergeant d'Hendecourt, Christoph Mordasini, David Nesvorny, Lena Noack, Merav Opher, James Owen, Chris Paranicas, Sascha Quanz, Liping Qin, Ignas Snellen, Leonardo Testi, Stéphane Udry, Joachim Wambsganss, Frances Westall, Philippe Zarka, Qiugang Zong
Publikováno v:
Planetary Exploration Horizon 2061 ISBN: 9780323902267
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::86eaa602c1a682e6af5c536ce1c27cda
https://doi.org/10.1016/b978-0-323-90226-7.00001-5
https://doi.org/10.1016/b978-0-323-90226-7.00001-5