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
planetary systems
planets and satellites: detection
techniques: photometric
Author
J.H. Livingston
M. Endl
Fei Dai
W. D. Cochran
O. Barragan
D. Gandolfi
T. Hirano
S. Grziwa
Alexis M. S. Smith
S. Albrecht
J. Cabrera
Sz. Csizmadia
Jerome P. De Leon
H. Deeg
Ph. Eigmuller
A. Erikson
M.E. Everett
Malcolm Fridlund
Chalmers, Space, Earth and Environment, Astronomy and Plasmaphysics
A. Fukui
Eike W. Guenther
A. P. Hatzes
S.B. Howell
J. Korth
N. Narita
D. Nespral
G. Nowak
E. Palle
M. Pätzold
Carina Persson
Chalmers, Space, Earth and Environment, Astronomy and Plasmaphysics
J. Prieto-Arranz
H. Rauer
M. Tamura
V. Van Eylen
J.N. Winn
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
Astronomy, Astrophysics and Cosmology
Roots
Basic sciences
DOI
10.3847/1538-3881/aaccde