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A super-Earth orbit...
A super-Earth orbiting near the inner edge of the habitable zone around the M4.5 dwarf Ross 508
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Harakawa, Hiroki (author)
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Takarada, Takuya (author)
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Kasagi, Yui (author)
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Hirano, Teruyuki (author)
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Kotani, Takayuki (author)
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Kuzuhara, Masayuki (author)
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Omiya, Masashi (author)
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Kawahara, Hajime (author)
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Fukui, Akihiko (author)
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Hori, Yasunori (author)
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Ishikawa, Hiroyuki Tako (author)
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Ogihara, Masahiro (author)
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Livingston, John (author)
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Brandt, Timothy D. (author)
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Currie, Thayne (author)
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Aoki, Wako (author)
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Beichman, Charles A. (author)
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Henning, Thomas (author)
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Hodapp, Klaus (author)
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Ishizuka, Masato (author)
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Izumiura, Hideyuki (author)
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Jacobson, Shane (author)
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- Janson, Markus (author)
- Stockholms universitet,Institutionen för astronomi
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Kambe, Eiji (author)
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Kodama, Takanori (author)
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Kokubo, Eiichiro (author)
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Konishi, Mihoko (author)
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Krishnamurthy, Vigneshwaran (author)
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Kudo, Tomoyuki (author)
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Kurokawa, Takashi (author)
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Kusakabe, Nobuhiko (author)
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Kwon, Jungmi (author)
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Matsumoto, Yuji (author)
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McElwain, Michael W. (author)
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Mitsui, Koyu (author)
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Nakagawa, Takao (author)
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Narita, Norio (author)
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Nishikawa, Jun (author)
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Nugroho, Stevanus K. (author)
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Serabyn, Eugene (author)
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Serizawa, Takuma (author)
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Takahashi, Aoi (author)
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Ueda, Akitoshi (author)
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Uyama, Taichi (author)
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Vievard, Sébastien (author)
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Wang, Ji (author)
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Wisniewski, John (author)
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Tamura, Motohide (author)
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Sato, Bun'ei (author)
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(creator_code:org_t)
- 2022-06-30
- 2022
- English.
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In: Publications of the Astronomical Society of Japan. - : Oxford University Press (OUP). - 0004-6264 .- 2053-051X. ; 74:4, s. 904-922
- Related links:
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https://doi.org/10.1...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
Close
- We report the near-infrared radial velocity (RV) discovery of a super-Earth planet on a 10.77 d orbit around the M4.5 dwarf Ross 508 (Jmag = 9.1). Using precision RVs from the Subaru Telescope IRD (InfraRed Doppler) instrument, we derive a semi-amplitude of 3.92ms−1, corresponding to a planet with a minimum mass msini=4.00M⊕. We find no evidence of significant signals at the detected period in spectroscopic stellar activity indicators or MEarth photometry. The planet, Ross 508 b, has a semi-major axis of 0.05366au. This gives an orbit-averaged insolation of ≈1.4 times the Earth’s value, placing Ross 508 b near the inner edge of its star’s habitable zone. We have explored the possibility that the planet has a high eccentricity and its host is accompanied by an additional unconfirmed companion on a wide orbit. Our discovery demonstrates that the near-infrared RV search can play a crucial role in finding a low-mass planet around cool M dwarfs like Ross 508.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Keyword
- infrared: planetary systems
- planets and satellites: terrestrial planets
- techniques: radial velocities
Publication and Content Type
- ref (subject category)
- art (subject category)
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To the university's database
- By the author/editor
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Harakawa, Hiroki
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Takarada, Takuya
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Kasagi, Yui
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Hirano, Teruyuki
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Kotani, Takayuki
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Kuzuhara, Masayu ...
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show more...
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Omiya, Masashi
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Kawahara, Hajime
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Fukui, Akihiko
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Hori, Yasunori
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Ishikawa, Hiroyu ...
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Ogihara, Masahir ...
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Livingston, John
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Brandt, Timothy ...
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Currie, Thayne
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Aoki, Wako
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Beichman, Charle ...
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Henning, Thomas
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Hodapp, Klaus
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Ishizuka, Masato
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Izumiura, Hideyu ...
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Jacobson, Shane
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Janson, Markus
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Kambe, Eiji
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Kodama, Takanori
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Kokubo, Eiichiro
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Konishi, Mihoko
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Krishnamurthy, V ...
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Kudo, Tomoyuki
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Kurokawa, Takash ...
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Kusakabe, Nobuhi ...
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Kwon, Jungmi
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Matsumoto, Yuji
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McElwain, Michae ...
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Mitsui, Koyu
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Nakagawa, Takao
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Narita, Norio
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Nishikawa, Jun
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Nugroho, Stevanu ...
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Serabyn, Eugene
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Serizawa, Takuma
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Takahashi, Aoi
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Ueda, Akitoshi
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Uyama, Taichi
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Vievard, Sébasti ...
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Wang, Ji
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Wisniewski, John
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Tamura, Motohide
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Sato, Bun'ei
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Astronomy Astrop ...
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Stockholm University