Year: 2018
Type: article
Abstract: We present a uniform analysis of candidates from the second year of NASA’s K2 mission (Campaigns 5–8), yielding statistically validated planets spanning a range of properties with median values of R p = , P = days, T eq = K, and J = mag. The sample includes planets in 11 multiplanetary systems, as well as 18 false positives and remaining planet candidates. Of particular interest are planets smaller than 2 , 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.
Source: The Astronomical Journal
Authors: John H. Livingston, Ian J. M. Crossfield, Erik A. Petigura, Erica J. Gonzales, David R. Ciardi, Charles A. Beichman, Jessie L. Christiansen, Courtney D. Dressing, Thomas Henning, Andrew W. Howard, Howard Isaacson, Benjamin J. Fulton, Molly Kosiarek, Joshua E. Schlieder, Evan Sinukoff, Motohide Tamura
Institutions: The University of Tokyo, Massachusetts Institute of Technology, California Institute of Technology, University of California, Santa Cruz, NASA Exoplanet Science Institute, Infrared Processing and Analysis Center, University of California, Berkeley, Max Planck Institute for Astronomy, Goddard Space Flight Center
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: bronze
Funders: National Science Foundation, National Aeronautics and Space Administration, California Institute of Technology, Space Telescope Science Institute, NASA Exoplanet Science Institute, European Space Agency, Jet Propulsion Laboratory, Science Mission Directorate, Natural Sciences and Engineering Research Council of Canada, Japan Society for the Promotion of Science, Astrophysics Division
OpenAlex ID: W2896778382