Planetary Candidates from K2 Campaign 16

Status Report From: e-Print archive
Posted: Tuesday, March 13, 2018

Liang Yu, Ian J. M. Crossfield, Joshua E. Schlieder, Molly R. Kosiarek, Adina D. Feinstein, John H. Livingston, Andrew W. Howard, Björn Benneke, Erik A. Petigura, Charles A. Beichman, David A. Berardo, Makennah Bristow, Jessie L. Christiansen, David R. Ciardi, Justin R. Crepp, Courtney D. Dressing, Benjamin J. Fulton, Erica J. Gonzales, Kevin K. Hardegree-Ullman, Thomas Henning, Howard Isaacson, Heather A. Knutson, Sébastien Lépine, Arturo O. Martinez, Farisa Y. Morales, Rahul I. Patel, Evan Sinukoff, Michael W. Werner
(Submitted on 12 Mar 2018)

We present a catalog of interesting targets recently identified using data from Campaign 16 of the K2 mission. Our catalog includes 32 high-quality planet candidates (showing no signs of being non- planetary in nature), 54 more ambiguous events that may be either planets or false positives, 169 eclipsing binaries, and 217 other regularly periodic variable sources. We have released light curves for all targets in C16, and have also released system parameters and transit vetting plots for all interesting candidates identified in this paper. Of particular interest is a candidate planet orbiting the bright F dwarf HD 73344 (V = 6.9, K = 5.6) with an orbital period of 15 days. If confirmed, this object would correspond to a $\sim2.6 R_{\oplus}$ planet and would likely be a favorable target for radial velocity characterization. Campaign 16 is one of just two K2 campaigns observed so far in "forward-facing" mode, which enables immediate follow-up observations from the ground. This paper is intended as a rapid release of planet candidates, eclipsing binaries and other interesting periodic variables to maximize the scientific yield of this campaign, and as a test run for the upcoming TESS mission, whose frequent data releases call for similarly rapid candidate identification and efficient follow-up.

Comments:    17 pages, 7 figures, 5 tables, submitted to AJ
Subjects:    Earth and Planetary Astrophysics (astro-ph.EP)
Cite as:    arXiv:1803.04091 [astro-ph.EP] (or arXiv:1803.04091v1 [astro-ph.EP] for this version)
Submission history
From: Liang Yu
[v1] Mon, 12 Mar 2018 02:25:10 GMT (6104kb,D)

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