44 Validated Planets from K2 Campaign 10
Journal article, 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
Author
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
University of Turin
D. Gandolfi
University of Turin
T. Hirano
Tokyo Institute of Technology
S. Grziwa
University of Cologne
Alexis M. S. Smith
German Aerospace Center (DLR)
S. Albrecht
Aarhus University
J. Cabrera
German Aerospace Center (DLR)
Sz. Csizmadia
German Aerospace Center (DLR)
Jerome P. De Leon
University of Tokyo
H. Deeg
University of La Laguna
Ph. Eigmuller
German Aerospace Center (DLR)
A. Erikson
German Aerospace Center (DLR)
M.E. Everett
National Optical Astronomy Observatory
Malcolm Fridlund
Leiden University
Chalmers, Space, Earth and Environment, Astronomy and Plasmaphysics
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
University of Cologne
N. Narita
Instituto de Astrofísica de Canarias
University of Tokyo
National Astronomical Observatory of Japan
Astrobiology Center, Japan
D. Nespral
University of La Laguna
Instituto de Astrofísica de Canarias
G. Nowak
University of La Laguna
Instituto de Astrofísica de Canarias
E. Palle
Instituto de Astrofísica de Canarias
University of La Laguna
M. Pätzold
University of Cologne
Carina Persson
Chalmers, Space, Earth and Environment, Astronomy and Plasmaphysics
J. Prieto-Arranz
University of La Laguna
Instituto de Astrofísica de Canarias
H. Rauer
German Aerospace Center (DLR)
Technische Universität Berlin
M. Tamura
National Astronomical Observatory of Japan
University of Tokyo
Astrobiology Center, Japan
V. Van Eylen
Leiden University
J.N. Winn
Princeton University
Astronomical Journal
0004-6256 (ISSN) 1538-3881 (eISSN)
Vol. 156 2 78Exoplanets from space – CHEOPS and PLATO, ESA’s next two projects
Swedish National Space Board (174/18), 2017-01-01 -- 2022-12-31.
Subject Categories (SSIF 2011)
Astronomy, Astrophysics and Cosmology
Roots
Basic sciences
DOI
10.3847/1538-3881/aaccde