44 Validated Planets from K2 Campaign 10
Artikel i vetenskaplig tidskrift, 2018
We present 44 validated planets from the 10th observing campaign of the NASA K2 mission, as well as high-resolution spectroscopy and speckle imaging follow-up observations. These 44 planets come from an initial set of 72 vetted candidates, which we subjected to a validation process incorporating pixel-level analyses, light curve analyses, observational constraints, and statistical false positive probabilities. Our validated planet sample has median values of Rp = 2.2 R_earth , P_orb = 6.9 days, T_eq = 890 K, and J = 11.2 mag. Of particular interest are four ultra-short period planets (P_orb}≲ 1 day), 16 planets smaller than 2 R_earth, and two planets with large predicted amplitude atmospheric transmission features orbiting infrared-bright stars. We also present 27 planet candidates, most of which are likely to be real and worthy of further observations. Our validated planet sample includes 24 new discoveries and has enhanced the number of currently known super-Earths (R_p ≈ 1–2 R_earth), sub-Neptunes (Rp ≈ 2–4 R_earth, and sub-Saturns (Rp ≈ 4–8 R_earth) orbiting bright stars (J = 8–10 mag) by ∼4%, ∼17%, and ∼11%, respectively.
techniques: spectroscopic
planets and satellites: detection
planetary systems
techniques: photometric
Författare
J.H. Livingston
University of Tokyo
M. Endl
The University of Texas at Austin
Fei Dai
Massachusetts Institute of Technology (MIT)
W. D. Cochran
The University of Texas at Austin
O. Barragan
Universita degli Studi di Torino
D. Gandolfi
Universita degli Studi di Torino
T. Hirano
Tokyo Institute of Technology
S. Grziwa
Universität zu Köln
Alexis M. S. Smith
Deutsches Zentrums für Luft- und Raumfahrt (DLR)
S. Albrecht
Aarhus Universitet
J. Cabrera
Deutsches Zentrums für Luft- und Raumfahrt (DLR)
Sz. Csizmadia
Deutsches Zentrums für Luft- und Raumfahrt (DLR)
Jerome P. De Leon
University of Tokyo
H. Deeg
Universidad de la Laguna
Ph. Eigmuller
Deutsches Zentrums für Luft- und Raumfahrt (DLR)
A. Erikson
Deutsches Zentrums für Luft- und Raumfahrt (DLR)
M.E. Everett
National Optical Astronomy Observatory
Malcolm Fridlund
Universiteit Leiden
Chalmers, Rymd-, geo- och miljövetenskap, Astronomi och plasmafysik
A. Fukui
National Astronomical Observatory of Japan
Eike W. Guenther
Thüringer Landessternwarte Tautenburg
A. P. Hatzes
Thüringer Landessternwarte Tautenburg
S.B. Howell
NASA Ames Research Center
Judith Korth
Universität zu Köln
N. Narita
Instituto de Astrofísica de Canarias
University of Tokyo
National Astronomical Observatory of Japan
Astrobiology Center, Japan
D. Nespral
Universidad de la Laguna
Instituto de Astrofísica de Canarias
G. Nowak
Universidad de la Laguna
Instituto de Astrofísica de Canarias
E. Palle
Instituto de Astrofísica de Canarias
Universidad de la Laguna
M. Pätzold
Universität zu Köln
Carina Persson
Chalmers, Rymd-, geo- och miljövetenskap, Astronomi och plasmafysik
J. Prieto-Arranz
Universidad de la Laguna
Instituto de Astrofísica de Canarias
H. Rauer
Deutsches Zentrums für Luft- und Raumfahrt (DLR)
Technische Universität Berlin
M. Tamura
National Astronomical Observatory of Japan
University of Tokyo
Astrobiology Center, Japan
V. Van Eylen
Universiteit Leiden
J.N. Winn
Princeton University
Astronomical Journal
0004-6256 (ISSN) 1538-3881 (eISSN)
Vol. 156 2 78Exoplaneter från rymden - CHEOPS och PLATO, ESA's nästa två missioner
Rymdstyrelsen (174/18), 2017-01-01 -- 2022-12-31.
Ämneskategorier (SSIF 2011)
Astronomi, astrofysik och kosmologi
Fundament
Grundläggande vetenskaper
DOI
10.3847/1538-3881/aaccde