Three Small Planets Transiting a Hyades Star
Artikel i vetenskaplig tidskrift, 2018

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 Rearth , 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.

planets and satellites: detection

stars: individual: LP 358-348

planetary systems

techniques: photometric

techniques: spectroscopic

Författare

John H. Livingston

University of Tokyo

Fei Dai

Princeton University

Massachusetts Institute of Technology (MIT)

Teruyuki Hirano

Tokyo Institute of Technology

Davide Gandolfi

Universita degli Studi di Torino

Grzegorz Nowak

Universidad de la Laguna

Instituto Astrofisico de Canarias

Michael Endl

The University of Texas at Austin

Sergio Velasco

Universidad de la Laguna

Instituto Astrofisico de Canarias

Akihiko Fukui

National Astronomical Observatory of Japan

Norio Narita

National Institutes of Natural Sciences

University of Tokyo

Jorge Prieto-Arranz

Instituto Astrofisico de Canarias

Universidad de la Laguna

Oscar Barragán

Universita degli Studi di Torino

Felice Cusano

Istituto nazionale di astrofisica (INAF)

Simon Albrecht

Aarhus Universitet

Juan Cabrera

Deutsches Zentrums für Luft- und Raumfahrt (DLR)

William D. Cochran

The University of Texas at Austin

Szilard Csizmadia

Deutsches Zentrums für Luft- und Raumfahrt (DLR)

Hans J. Deeg

Universidad de la Laguna

Instituto Astrofisico de Canarias

Philipp Eigmüller

Deutsches Zentrums für Luft- und Raumfahrt (DLR)

Anders Erikson

Deutsches Zentrums für Luft- und Raumfahrt (DLR)

Malcolm Fridlund

Chalmers, Rymd-, geo- och miljövetenskap, Astronomi och plasmafysik

Universiteit Leiden

Sascha Grziwa

Universität zu Köln

Eike W. Guenther

Thüringer Landessternwarte Tautenburg

Artie P. Hatzes

Thüringer Landessternwarte Tautenburg

Kiyoe Kawauchi

Tokyo Institute of Technology

Judith Korth

Universität zu Köln

David Nespral

Universidad de la Laguna

Instituto Astrofisico de Canarias

Enric Palle

Universidad de la Laguna

Instituto Astrofisico de Canarias

Martin Pätzold

Universität zu Köln

Carina Persson

Chalmers, Rymd-, geo- och miljövetenskap, Astronomi och plasmafysik, Galaktisk astrofysik

Heike Rauer

Deutsches Zentrums für Luft- und Raumfahrt (DLR)

Technische Universität Berlin

A. M. S. Smith

Deutsches Zentrums für Luft- und Raumfahrt (DLR)

Motohide Tamura

University of Tokyo

National Institutes of Natural Sciences

Yasuhiro Tanaka

University of Tokyo

Vincent Van Eylen

Universiteit Leiden

Noriharu Watanabe

The Graduate University for Advanced Studies (SOKENDAI)

National Astronomical Observatory of Japan

Joshua N. Winn

Princeton University

Astronomical Journal

0004-6256 (ISSN) 1538-3881 (eISSN)

Vol. 155 3 115

Exoplaneter från rymden - CHEOPS och PLATO

Rymdstyrelsen, 2017-01-01 -- 2022-12-31.

Ämneskategorier

Astronomi, astrofysik och kosmologi

Fundament

Grundläggande vetenskaper

DOI

10.3847/1538-3881/aaa841

Mer information

Senast uppdaterat

2018-10-12