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http://hdl.handle.net/20.500.12386/28030
Titolo: | Three Small Planets Transiting a Hyades Star | Autori: | Livingston, John H. Dai, Fei Hirano, Teruyuki Gandolfi, Davide Nowak, Grzegorz Endl, Michael Velasco, Sergio Fukui, Akihiko Narita, Norio Prieto-Arranz, Jorge Barragan, Oscar CUSANO, FELICE Albrecht, Simon Cabrera, Juan Cochran, William D. Csizmadia, Szilard Deeg, Hans J. Eigmüller, Philipp Erikson, Anders Fridlund, Malcolm Grziwa, Sascha Guenther, Eike W. Hatzes, Artie P. Kawauchi, Kiyoe Korth, Judith Nespral, David Palle, Enric Pätzold, Martin Persson, Carina M. Rauer, Heike Smith, Alexis M. S. Tamura, Motohide Tanaka, Yusuke Van Eylen, Vincent Watanabe, Noriharu Winn, Joshua N. |
Data pubblicazione: | 2018 | Rivista: | THE ASTRONOMICAL JOURNAL | Numero: | 155 | Fascicolo: | 3 | Da pagina:: | 115 | 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}<SUB>-0.00036</SUB><SUP>+0.00034</SUP>, and {25.5715}<SUB>-0.0040</SUB><SUP>+0.0038</SUP> {days}, and radii of 1.05 ± 0.16, 3.14 ± 0.36, and {1.55}<SUB>-0.21</SUB><SUP>+0.24</SUP> {R}<SUB>\oplus </SUB>, 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. | URI: | http://hdl.handle.net/20.500.12386/28030 | URL: | https://iopscience.iop.org/article/10.3847/1538-3881/aaa841 | ISSN: | 0004-6256 | DOI: | 10.3847/1538-3881/aaa841 | Bibcode ADS: | 2018AJ....155..115L | Fulltext: | open |
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