The K2-ESPRINT project. VI. K2-105 b, a hot Neptune around a metal-rich G-dwarf

Abstract We report on the confirmation that the candidate transits observed for the star EPIC 211525389 are due to a short-period Neptune-sized planet. The host star, located in K2 campaign field 5, is a metal-rich ([Fe/H] = 0.26 ± 0.05) G-dwarf (T eff = 5430 ± 70 K and log g = 4.48 ± 0.09), based o...

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Published in:Publications of the Astronomical Society of Japan 2017-04, Vol.69 (2)
Main Authors: Narita, Norio, Hirano, Teruyuki, Fukui, Akihiko, Hori, Yasunori, Dai, Fei, Yu, Liang, Livingston, John, Ryu, Tsuguru, Nowak, Grzegorz, Kuzuhara, Masayuki, Sato, Bun'ei, Takeda, Yoichi, Albrecht, Simon, Kudo, Tomoyuki, Kusakabe, Nobuhiko, Palle, Enric, Ribas, Ignasi, Tamura, Motohide, Van Eylen, Vincent, Winn, Joshua N.
Format: Article
Language:English
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Summary:Abstract We report on the confirmation that the candidate transits observed for the star EPIC 211525389 are due to a short-period Neptune-sized planet. The host star, located in K2 campaign field 5, is a metal-rich ([Fe/H] = 0.26 ± 0.05) G-dwarf (T eff = 5430 ± 70 K and log g = 4.48 ± 0.09), based on observations with the High Dispersion Spectrograph (HDS) on the Subaru 8.2 m telescope. High spatial resolution AO imaging with HiCIAO on the Subaru telescope excludes faint companions near the host star, and the false positive probability of this target is found to be
ISSN:0004-6264
2053-051X
DOI:10.1093/pasj/psx002