Sixty Validated Planets from K2 Campaigns 5–8
Name
Livingston_2018_AJ_156_277.pdf
Description
Published version
Size
12.01 MB
Format
Adobe PDF
Checksum (MD5)
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Author(s)
Livingston, John H
Crossfield, Ian Jm
Petigura, Erik A
Gonzales, Erica J
Ciardi, David R
Beichman, Charles A
Christiansen, Jessie L
Dressing, Courtney D
Henning, Thomas
Howard, Andrew W
Date Issued
November 2018
Journal
Astronomical Journal
Publisher
IOP Publishing
Citation
Livingston, John H. et al. "Sixty Validated Planets from K2 Campaigns 5–8." Astronomical Journal 156, 6 (November 2018): 277 © 2018 American Astronomical Society
Version
Final published version
Abstract
We present a uniform analysis of 155 candidates from the second year of NASA's K2 mission (Campaigns 5-8), yielding 60 statistically validated planets spanning a range of properties with median values of R p = 2.5 R Å , P = 7.1 days, T eq = 811 K, and J = 11.3 mag. The sample includes 24 planets in 11 multiplanetary systems, as well as 18 false positives and 77 remaining planet candidates. Of particular interest are 18 planets smaller than 2 R Å , five orbiting stars brighter than J = 10 mag, and a system of four small planets orbiting the solar-type star EPIC 212157262. We compute planetary transit parameters and false-positive probabilities using a robust statistical framework and present a complete analysis incorporating the results of an intensive campaign of high-resolution imaging and spectroscopic observations. This work brings the K2 yield to over 360 planets, and by extrapolation, we expect that K2 will have discovered ∼600 planets before the expected depletion of its onboard fuel in late 2018.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.3847/1538-3881/AAE778
