60 Validated Planets from K2 Campaigns 5-8
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

TL;DR
This paper reports the validation of 60 exoplanets from NASA's K2 mission campaigns 5-8, including small planets and multi-planet systems, based on comprehensive statistical and observational analysis.
Contribution
It provides a uniform validation of 60 planets from K2 data, incorporating high-resolution imaging, spectroscopy, and statistical methods, expanding the known exoplanet catalog.
Findings
60 validated planets with median radius 2.5 R_⊕
Includes 18 planets smaller than 2 R_⊕
K2 mission has discovered over 360 planets so far
Abstract
We present a uniform analysis of 155 candidates from the second year of NASA's mission (Campaigns 5-8), yielding 60 statistically validated planets spanning a range of properties, with median values of = 2.5 , = 7.1 d, = 811 K, and = 11.3 mag. The sample includes 24 planets in 11 multi-planetary systems, as well as 18 false positives, and 77 remaining planet candidates. Of particular interest are 18 planets smaller than 2 , five orbiting stars brighter than = 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 yield to…
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