Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Takuya Takarada"'
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:
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
Autor:
Huan-Yu Teng, Bun’ei Sato, Masanobu Kunitomo, Takuya Takarada, Masashi Omiya, Hiroki Harakawa, Guang-Yao Xiao, Yu-Juan Liu, Hideyuki Izumiura, Eiji Kambe, Michitoshi Yoshida, Yoichi Itoh, Hiroyasu Ando, Eiichiro Kokubo, Shigeru Ida
We report the detection of a giant planet orbiting a G-type giant star HD 167768 from radial velocity measurements using HIgh Dispersion Echelle Spectrograph (HIDES) at Okayama Astrophysical Observatory (OAO). HD 167768 has a mass of $1.08_{-0.12}^{+
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6c22ba77cb360bddd0975baab6a83bbd
http://arxiv.org/abs/2211.06576
http://arxiv.org/abs/2211.06576
Autor:
Huan-Yu Teng, Bun’ei Sato, Takuya Takarada, Masashi Omiya, Hiroki Harakawa, Makiko Nagasawa, Ryo Hasegawa, Hideyuki Izumiura, Eiji Kambe, Michitoshi Yoshida, Yoichi Itoh, Hiroyasu Ando, Eiichiro Kokubo, Shigeru Ida
We report the discovery of a triple-giant-planet system around an evolved star HD 184010 (HR 7421, HIP 96016). This discovery is based on observations from Okayama Planet Search Program, a precise radial velocity survey, undertaken at Okayama Astroph
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f5774ec22712312f565c5a44c0ae27dc
http://arxiv.org/abs/2209.09426
http://arxiv.org/abs/2209.09426
Autor:
Hiroki Harakawa, Takuya Takarada, Yui Kasagi, Teruyuki Hirano, Takayuki Kotani, Masayuki Kuzuhara, Masashi Omiya, Hajime Kawahara, Akihiko Fukui, Yasunori Hori, Hiroyuki Tako Ishikawa, Masahiro Ogihara, John Livingston, Timothy D Brandt, Thayne Currie, Wako Aoki, Charles A Beichman, Thomas Henning, Klaus Hodapp, Masato Ishizuka, Hideyuki Izumiura, Shane Jacobson, Markus Janson, Eiji Kambe, Takanori Kodama, Eiichiro Kokubo, Mihoko Konishi, Vigneshwaran Krishnamurthy, Tomoyuki Kudo, Takashi Kurokawa, Nobuhiko Kusakabe, Jungmi Kwon, Yuji Matsumoto, Michael W McElwain, Koyu Mitsui, Takao Nakagawa, Norio Narita, Jun Nishikawa, Stevanus K Nugroho, Eugene Serabyn, Takuma Serizawa, Aoi Takahashi, Akitoshi Ueda, Taichi Uyama, Sébastien Vievard, Ji Wang, John Wisniewski, Motohide Tamura, Bun’ei Sato
We report the near-infrared radial-velocity (RV) discovery of a super-Earth planet on a 10.77-day orbit around the M4.5 dwarf Ross 508 ($J_\mathrm{mag}=9.1$). Using precision RVs from the Subaru Telescope IRD (InfraRed Doppler) instrument, we derive
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7ad5d76e7e553e48e1c87d6a72ebdaae
Autor:
Masayuki Kuzuhara, Thayne Currie, Takuya Takarada, Timothy D. Brandt, Bun’ei Sato, Taichi Uyama, Markus Janson, Jeffrey Chilcote, Taylor Tobin, Kellen Lawson, Yasunori Hori, Olivier Guyon, Tyler D. Groff, Julien Lozi, Sebastien Vievard, Ananya Sahoo, Vincent Deo, Nemanja Jovanovic, Kyohoon Ahn, Frantz Martinache, Nour Skaf, Eiji Akiyama, Barnaby R. Norris, Mickaël Bonnefoy, Krzysztof G. Hełminiak, Tomoyuki Kudo, Michael W. McElwain, Matthias Samland, Kevin Wagner, John Wisniewski, Gillian R. Knapp, Jungmi Kwon, Jun Nishikawa, Eugene Serabyn, Masahiko Hayashi, Motohide Tamura
We present the direct-imaging discovery of a substellar companion in orbit around a Sun-like star member of the Hyades open cluster. So far, no other substellar companions have been unambiguously confirmed via direct imaging around main-sequence star
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c5e0a94d4b4de69942c6c9a308589a24
Autor:
Huan-Yu Teng, Bun’ei Sato, Takuya Takarada, Masashi Omiya, Hiroki Harakawa, Hideyuki Izumiura, Eiji Kambe, Yoichi Takeda, Michitoshi Yoshida, Yoichi Itoh, Hiroyasu Ando, Eiichiro Kokubo
We report the detection of radial velocity variations in nine evolved G- and K-type giant stars. The observations were conducted at Okayama Astrophysical Observatory. Planets or planet candidates can best explain these regular variations. However, a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::32c148957495f2c973bf700332123a34
http://arxiv.org/abs/2112.07169
http://arxiv.org/abs/2112.07169
Autor:
Mingjie Jian, Hideo Mamiya, Yuhei Kamei, Kenshi Yanagisawa, Ryohei Hosokawa, Hiroshi Akitaya, Noriyuki Katoh, Satoshi Honda, Yuichiro Sekiguchi, Yumiko Oasa, Koji S. Kawabata, Moeno Yasuda, Takumi Iwasaki, Nobuyuki Kawai, Ryou Ohsawa, Masayuki Yamanaka, Miki Oeda, Ryo Hamasaki, Chihiro Ishioka, Yousuke Utsumi, Takumi Shigeyoshi, Kazuki Daikuhara, Himeka Takeuchi, Miyako Tozuka, Hiroki Onozato, Jun Takahashi, Tomoki Morokuma, Yasuki Tamura, Yuki Nishinaka, Michitoshi Yoshida, Takahiro Kanai, Nagomi Uchida, Keiichiro Kubota, Kazuki Shiraishi, Takahiro Nagayama, Takuya Takarada, Yang Chong, Tomoki Saito, Yoshinori Uzawa, Yoichi Yatsu, Kumiko Morihana, Yuma Kubota, Shigeyuki Sako, Kazuya Matsubayashi, Hidehiro Kaneda, Yuu Niino, Masafumi Niwano, Mahito Sasada, Kengo Takagi, Daisuke Suzuki, Takayuki Ohgami, Nozomu Tominaga, M. Shikauchi, Kota Iida, Noriatsu Nakamura, Futa Ogawa, Katsuhiro L. Murata, Sayaka Toma, Ryosuke Itoh, Kohei Oide, Daisaku Nogami, Fumio Abe, Masaomi Tanaka, Kouji Ohta, Ayane Kaneko, Tatsuya Nakaoka, Ryo Adachi, Ryoya Tanaka, Toshikazu Shigeyama, Masaki Takayama, Fumiya Imazato
The Laser Interferometer Gravitational-wave Observatory Scientific Collaboration and Virgo Collaboration (LVC) sent out 56 gravitational-wave (GW) notices during the third observing run (O3). Japanese collaboration for Gravitational wave ElectroMagne
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1440b967ef8dc64732cd3a52fad2f65d
http://arxiv.org/abs/2106.04842
http://arxiv.org/abs/2106.04842
Radial-velocity search and statistical studies for short-period planets in the Pleiades open cluster
Publikováno v:
Publications of the Astronomical Society of Japan. 72
We report radial-velocity search for short-period planets in the Pleiades open cluster. We observed 30 Pleiades member stars at the Okayama Astrophysical Observatory (OAO) with High Dispersion Echelle Spectrograph (HIDES). To evaluate and mitigate th