Zobrazeno 1 - 10
of 22
pro vyhledávání: '"Eri Toyota"'
Autor:
Masashi Omiya, Debra A. Fischer, Yasunori Hori, Geoffrey W. Marcy, Eri Toyota, John Asher Johnson, Hiroki Harakawa, Andrew W. Howard, Bun'ei Sato, Shigeru Ida
Publikováno v:
The Astrophysical Journal. 715:550-553
We report the detection of a large mass planet orbiting around the K0 metal-rich subgiant HD38801 (V = 8.26) by precise radial velocity (RV) measurements from the Subaru Telescope and the Keck Telescope. The star has a mass of 1.36 M_☉ and a metall
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::693655bb49f2f540dfff87fcdad3ec32
https://doi.org/10.1088/0004-637x/715/1/550
https://doi.org/10.1088/0004-637x/715/1/550
Publikováno v:
Publications of the Astronomical Society of Japan. 61:931-939
We present metallicity analyses of A, F, and G stars in the Pleiades cluster. High-resolution spectroscopic observations of 25 stars were made with the HIDES spectrograph on the Okayama 1.88-m telescope and the GAOES spectrograph on the Gunma 1.5-m t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::99fcc8a8a1dbffb6376604c6155e010e
https://doi.org/10.1093/pasj/61.5.931
https://doi.org/10.1093/pasj/61.5.931
Autor:
Howard Isaacson, Kathryn M. G. Peek, Masashi Omiya, Geoffrey W. Marcy, Debra A. Fischer, Bun'ei Sato, Yasunori Hori, Shigeru Ida, Eri Toyota, Andrew W. Howard, Hiroki Harakawa, John Asher Johnson
Publikováno v:
The Astrophysical Journal. 703:671-674
We report the detection of a substellar companion orbiting the G5 dwarf HD 16760 from the N2K sample. Precise Doppler measurements of the star from Subaru and Keck revealed a Keplerian velocity variation with a period of 466.47+-0.35 d, a semiamplitu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8ea93a1b3a9e11777023eb4f6cb7809a
https://doi.org/10.1088/0004-637x/703/1/671
https://doi.org/10.1088/0004-637x/703/1/671
Autor:
Seitaro Urakawa, Yumiko Oasa, Hitoshi Funayama, Eri Toyota, Daisuke Murata, Yoichi Itoh, Bun'ei Sato, Tadashi Mukai, Shinichiro Ishiguma, Hiroko Matsuyama
Publikováno v:
Publications of the Astronomical Society of Japan. 61(1):19-28
We have started a search for extrasolar planets in visual binary systems from 2003. We monitor them by precise radial velocity measurements, using High Dispersion Echelle Spectrograph(HIDES) equipped on the Okayama Astrophysical Observatory’s(OAO)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f9ada4780c437f1e9ae7f6f6ca638370
https://hdl.handle.net/20.500.14094/90001422
https://hdl.handle.net/20.500.14094/90001422
Autor:
Masashi Omiya, Eiichiro Kokubo, Yoichi Itoh, Shigeru Ida, Michitoshi Yoshida, Eiji Kambe, Seiji Masuda, Yoichi Takeda, Hiroyasu Ando, Bun'ei Sato, Hideyuki Izumiura, Eri Toyota
Publikováno v:
Publications of the Astronomical Society of Japan. 60:1317-1326
We report on the detection of four extrasolar planets orbiting evolved intermediate-mass stars from a precise Doppler survey of G and K giants at Okayama Astrophysical Observatory. All of the host stars are considered to be formerly early F-type or A
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::97a9a9347ca0dd7e693d88267f7d614f
https://doi.org/10.1093/pasj/60.6.1317
https://doi.org/10.1093/pasj/60.6.1317
Autor:
R. Paul Butler, Genya Takeda, Peter Driscoll, John Asher Johnson, Masashi Omiya, Eri Toyota, Geoffrey W. Marcy, Jason T. Wright, Gregory Laughlin, Sarah E. Robinson, Debra A. Fischer, Bun'ei Sato, Steven S. Vogt, Gregory W. Henry, Shigeru Ida
Publikováno v:
The Astrophysical Journal. 669:1336-1344
We report the detection of five Jovian mass planets orbiting high metallicity stars. Four of these stars were first observed as part of the N2K program and exhibited low RMS velocity scatter after three consecutive observations. However, follow-up ob
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0cc2ac78fc92655a7e3d5aa508a59789
https://doi.org/10.1086/521869
https://doi.org/10.1086/521869
Autor:
Eiji Kambe, S. Masuda, Masashi Omiya, Bun'ei Sato, Kang-Min Kim, Masahide Takada-Hidai, Seitaro Urakawa, Byeong-Cheol Lee, Tae Seog Yoon, Hideyuki Izumiura, Eri Toyota, Inwoo Han, Michitoshi Yoshida
Publikováno v:
Proceedings of the International Astronomical Union. 3:53-56
Since 2005, we have been carrying out a precise radial velocity survey of about 190 intermediate-mass (1.5-5 M⊙) G and K giants at Bohyunsan Optical Astronomy Observatory (BOAO) in Korea and Okayama Astrophysical Observatory (OAO) in Japan, which a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c833a6ab11411db78e98d010d71680f7
https://doi.org/10.1017/s1743921308016360
https://doi.org/10.1017/s1743921308016360
Autor:
Yoichi Itoh, Hideyuki Izumiura, Yoichi Takeda, Shigeru Ida, Eiji Kambe, Hiroyasu Ando, Eiichiro Kokubo, Bun'ei Sato, Eri Toyota, Masashi Omiya, Daisuke Murata, Seiji Masuda, Masahiro Ikoma, Michitoshi Yoshida
Publikováno v:
The Astrophysical Journal. 661:527-531
Wereportthedetection of anextrasolarplanet orbitingTau,oneof thegiantstarsintheHyadesopencluster.This is the first planet ever discovered in an open cluster. Precise Doppler measurements of this star from Okayama Astrophysical Observatory have reveal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0db33ce971acbd364439c21ec70519f9
https://doi.org/10.1086/513503
https://doi.org/10.1086/513503
Autor:
G. W. Marcy, Peter Bodenheimer, R. P. Butler, Jeff A. Valenti, Debra A. Fischer, K. L. Tah, Greg Laughlin, Bun'ei Sato, Gregory W. Henry, John Asher Johnson, Eri Toyota, Jason T. Wright, Jay Strader, Dante Minniti, Steven S. Vogt, Chris McCarthy, Shigeru Ida, Aaron S. Wolf, Mark Ammons, Louis J. Boyd, Sarah J. Robinson
Publikováno v:
Astrophys. J.. 633(1):465-473
Doppler measurements from Subaru and Keck have revealed radial velocity variations in the V=8.15, G0IV star HD 149026 consistent with a Saturn-Mass planet in a 2.8766 day orbit. Photometric observations at Fairborn Observatory have detected three com
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e5ffbb1f8b80742cd745a0185824fbd8
http://t2r2.star.titech.ac.jp/cgi-bin/publicationinfo.cgi?q_publication_content_number=CTT100533298
http://t2r2.star.titech.ac.jp/cgi-bin/publicationinfo.cgi?q_publication_content_number=CTT100533298
Autor:
Jay Strader, Jeff A. Valenti, Mark Ammons, Abby Fuller, Dante Minniti, Steve Vogt, Greg Henry, K. L. Tah, Bun'ei Sato, John Asher Johnson, Geoff Marcy, Chris McCarthy, Paul Butler, Sarah J. Robinson, Debra A. Fischer, Jason T. Wright, Elizabeth A. Manrao, Shigeru Ida, Peter Driscoll, Melesio Muñoz, Greg Spear, Eri Toyota, Greg Laughlin, Teresa Johnson
Publikováno v:
The Astrophysical Journal. 620:481-486
The N2K ("next 2000") consortium is carrying out a distributed observing campaign with the Keck, Magellan, and Subaru telescopes, as well as the automatic photometric telescopes of Fairborn Observatory, in order to search for short-period gas giant p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e4b617fffc8119f1e13142bf60e4a03f
https://doi.org/10.1086/426810
https://doi.org/10.1086/426810