@article{a6b8e81f097b4092b767b097ac6c9558,
title = "Three Small Planets Transiting a Hyades Star",
abstract = "We present the discovery of three small planets transiting K2-136 (LP 358 348, EPIC 247589423), a late K dwarf in the Hyades. The planets have orbital periods of 7.9757 ± 0.0011, 17.30681-0.00036+0.00034, and 25.5715-0.0040+0.0038 days, and radii of 1.05 ± 0.16, 3.14 ± 0.36, and 1.55-0.21+0.24 R⊕, respectively. With an age of 600-800 Myr, these planets are some of the smallest and youngest transiting planets known. Due to the relatively bright (J = 9.1) host star, the planets are compelling targets for future characterization via radial velocity mass measurements and transmission spectroscopy. As the first known star with multiple transiting planets in a cluster, the system should be helpful for testing theories of planet formation and migration.",
keywords = "planetary systems, planets and satellites: detection, stars: individual (LP 358-348), techniques: photometric, techniques: spectroscopic",
author = "Livingston, {John H.} and Fei Dai and Teruyuki Hirano and Davide Gandolfi and Grzegorz Nowak and Michael Endl and Sergio Velasco and Akihiko Fukui and Norio Narita and Jorge Prieto-Arranz and Oscar Barragan and Felice Cusano and Simon Albrecht and Juan Cabrera and Cochran, {William D.} and Szilard Csizmadia and Deeg, {Hans J.} and Philipp Eigm{\"u}ller and Anders Erikson and Malcolm Fridlund and Sascha Grziwa and Guenther, {Eike W.} and Hatzes, {Artie P.} and Kiyoe Kawauchi and Judith Korth and David Nespral and Enric Palle and Martin P{\"a}tzold and Persson, {Carina M.} and Heike Rauer and Smith, {Alexis M.S.} and Motohide Tamura and Yusuke Tanaka and {Van Eylen}, Vincent and Noriharu Watanabe and Winn, {Joshua N.}",
note = "Funding Information: This work is based on observations obtained with the NOT, operated on the island of La Palma jointly by Denmark, Finland, Iceland, Norway, and Sweden, in the Spanish Observatorio del Roque de los Muchachos (ORM) of the Instituto de Astrof{\'i}sica de Canarias (IAC). We are very grateful to the NOT staff members for their unique and superb support during the observations. J.H.L. gratefully acknowledges the support of the Japan Society for the Promotion of Science (JSPS) Research Fellowship for Young Scientists. D.G. gratefully acknowledges the financial support of the Programma Giovani Ricercatori—Rita Levi Montalcini—Rientro dei Cervelli (2012) awarded by the Italian Ministry of Education, Universities and Research (MIUR). This research has made use of the NASA Exoplanet Archive, which is operated by the California Institute of Technology, under contract with the National Aeronautics and Space Administration under the Exoplanet Exploration Program. This work was supported by JSPS KAKENHI grant No. JP16K17660. H.J.D. and D.N. acknowledge support by grant ESP2015-65712-C5-4-R of the Spanish Secretary of State for R&D&i (MINECO). This paper includes data collected by the Kepler mission. Funding for the Kepler mission is provided by the NASA Science Mission directorate. Publisher Copyright: {\textcopyright} 2018. The American Astronomical Society. All rights reserved.",
year = "2018",
month = mar,
doi = "10.3847/1538-3881/aaa841",
language = "English (US)",
volume = "155",
journal = "Astronomical Journal",
issn = "0004-6256",
publisher = "IOP Publishing Ltd.",
number = "3",
}