Details

Autor(en) / Beteiligte

• Dai, Fei
• Winn, Joshua N.
• Gandolfi, Davide
• Wang, Sharon X.
• Teske, Johanna K.
• Burt, Jennifer
• Albrecht, Simon
• Barragán, Oscar
• Cochran, William D.
• Endl, Michael
• Fridlund, Malcolm
• Hatzes, Artie P.
• Hirano, Teruyuki
• Hirsch, Lea A.
• Johnson, Marshall C.
• Bo Justesen, Anders
• Livingston, John
• Persson, Carina M.
• Prieto-Arranz, Jorge
• Vanderburg, Andrew
• Alonso, Roi
• Antoniciello, Giuliano
• Arriagada, Pamela
• Butler, R. P.
• Cabrera, Juan
• Crane, Jeffrey D.
• Cusano, Felice
• Csizmadia, Szilárd
• Deeg, Hans
• Dieterich, Sergio B.
• Eigmüller, Philipp
• Erikson, Anders
• Everett, Mark E.
• Fukui, Akihiko
• Grziwa, Sascha
• Guenther, Eike W.
• Henry, Gregory W.
• Howell, Steve B.
• Johnson, John Asher
• Korth, Judith
• Kuzuhara, Masayuki
• Narita, Norio
• Nespral, David
• Nowak, Grzegorz
• Palle, Enric
• Pätzold, Martin
• Rauer, Heike
• Rodríguez, Pilar Montañés
• Shectman, Stephen A.
• Smith, Alexis M. S.
• Thompson, Ian B.
• Eylen, Vincent Van
• Williamson, Michael W.
• Wittenmyer, Robert A.

Titel

The Discovery and Mass Measurement of a New Ultra-short-period Planet: K2-131b

Ist Teil von

• The Astronomical journal, 2017-12, Vol.154 (6), p.226

Ort / Verlag

Madison: The American Astronomical Society

Erscheinungsjahr

2017

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• We report the discovery of a new ultra-short-period planet and summarize the properties of all such planets for which the mass and radius have been measured. The new planet, K2-131b, was discovered in K2 Campaign 10. It has a radius of and orbits a G dwarf with a period of 8.9 hr. Radial velocities obtained with Magellan/PFS and TNG/HARPS-N show evidence for stellar activity along with orbital motion. We determined the planetary mass using two different methods: (1) the "floating chunk offset" method, based only on changes in velocity observed on the same night; and (2) a Gaussian process regression based on both the radial velocity and photometric time series. The results are consistent and lead to a mass measurement of and a mean density of g cm−3.