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19982023
most citedThe elemental composition of the Sun I. The intermediate mass elements Na to Ca

237 citations · 2.9k across the 92 of their papers we have counts for

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astro-ph.EP2021★ 13 cited

Regular Radial Velocity Variations in Nine G- and K-type Giant Stars: Eight Planets and One Planet Candidate

Huan-Yu Teng, Bun'ei Sato, Takuya Takarada +9

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 pl…

astro-ph.EP2021★ 1 cited

A compositional link between rocky exoplanets and their host stars

Vardan Adibekyan, Caroline Dorn, Sérgio G. Sousa +17

Stars and planets both form by accreting material from a surrounding disk. Because they grow from the same material, theory predicts that there should be a relationship between the…

astro-ph.EP2018★ 21 cited

Planets around the evolved stars 24 Booties and Libra: A 30d-period planet and a double giant-planet system in possible 7:3 MMR

Takuya Takarada, Bun'ei Sato, Masashi Omiya +10

We report the detection of planets around two evolved giant stars from radial velocity measurements at Okayama Astrophysical observatory. 24 Boo (G3IV) has a mass of $0.99\,M_{\odo…

astro-ph.EP2017★ 12 cited

The K2-ESPRINT Project VI: K2-105 b, a Hot-Neptune around a Metal-rich G-dwarf

Norio Narita, Teruyuki Hirano, Akihiko Fukui +16

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…

astro-ph.EP2016★ 46 cited

The K2-ESPRINT Project V: a short-period giant planet orbiting a subgiant star

Vincent Van Eylen, Simon Albrecht, Davide Gandolfi +31

We report on the discovery and characterization of the transiting planet K2-39b (EPIC 206247743b). With an orbital period of 4.6 days, it is the shortest-period planet orbiting a s…

astro-ph.EP2016★ 7 cited

High-Contrast Imaging of Intermediate-Mass Giants with Long-Term Radial Velocity Trends

Tsuguru Ryu, Bun'ei Sato, Masayuki Kuzuhara +62

A radial velocity (RV) survey for intermediate-mass giants has been operated for over a decade at Okayama Astrophysical Observatory (OAO). The OAO survey has revealed that some gia…