A TESS Dress Rehearsal: Planetary Candidates and Variables from K2 Campaign 17

Abstract

We produce light curves for all ∼34,000 targets observed with K2 in Campaign 17 (C17), identifying planet candidates, eclipsing binaries, and other periodic variables. The forward-facing direction of the C17 field means follow-up can begin immediately now that the campaign has concluded and interesting targets have been identified. The C17 field has a large overlap with C6, so this latest campaign also offers an infrequent opportunity to study a large number of targets already observed in a previous K2 campaign. The timing of the C17 data release, shortly before science operations begin with the Transiting Exoplanet Survey Satellite ( TESS ), also lets us exercise some of the tools and methods developed for identification and dissemination of planet candidates from TESS . We find excellent agreement between these results and those identified using only K2 -based tools. Among our planet candidates are several planet candidates with sizes <4 R ⊕ and orbiting stars with Kp  ≲ 10 (indicating good RV targets of the sort TESS hopes to find) and a Jupiter-sized single-transit event around a star already hosting a 6 day planet candidate.