help prioritize follow-up and enable occurrence rate studies. • Many excellent teams have published partial catalogs. • Only ~30% of K2 planets are published. (Dotson+ 2019) K2 complements TESS by adding smaller & cooler planets. See talks by Hedges, Vanderburg, Becker, Hardegree-Ullman, Rodriguez, Ciardi, & others.
inform planet formation models and future missions. • Kepler’s DR25 planet products were published last year and have already been used by several excellent teams. • K2 observed a wider range of stellar ages, types, and populations — will this help reﬁne occurrence rates? See talks by Dressing, Berger, Mulders, Morton, Sestovic, Mann, Herman, & others. See posters by Bryson, Coughlin, Estrela, Gupta, Zink, & others.
occur in multiple systems. (e.g. Duchêne & Kraus 2013). • Only 11 circumbinary planets have been discovered by Kepler! (Fleming+ 2018) • Circumbinary planets transit at irregular periods and are diluted. Can dedicated searches reveal more? What is their frequency? See talks by Kraus, Matson, Hess, & others. See posters by Sudol, Socia, Gonzales, & others.
(TTVs) can identify dynamically interesting systems and reveal planet masses. • Planet searches tend to look for periodic signals. Planets with extreme TTVs may be missed. • Opportunity to leverage the long baseline offered in areas where Kepler, K2, & TESS overlap. See talks by Weiss, Lissauer, Ragozzine, Zhu, & others. See posters by Berardo, Dalba, Fabrycky, Jontof-Hutter, Vissapragada, & others.
clusters provide laboratories for understanding stellar evolution and planet formation. • Kepler & K2 observed 29 clusters across all ages. (Cody et al. 2018) • Do asteroseismology, eclipsing binaries, rotation rates, and planet rates tell a consistent story across these clusters? See breakout sessions by Cody & Soderblom. See talks by Angus, Mann, Curtis, Gully-Santiago, Venuti, White, & others. See posters by Barna, Beatty, Carmichael, David, Dhara, Gosnell, Rampalli, Rebull, Soares, Stauffer, Thao, Torres, & others.
giants using asteroseismology. • The Kepler ﬁeld recently revealed a strong relationship between red giant age & composition. (Silva Aguirre+ 2018) • Will similar analyses across all K2 ﬁelds reveal new insights into the history of the Milky Way? See talks by Pinsonneault, Stello, Yu, Garcia, Huber, White, Deheuvels, Gaulme, Cantiello, & others.
of supernovae and other transients. • In some cases, K2 captured a full light curve starting from before the explosion to many weeks thereafter. • What will we learn about supernova progenitors? See talks by Garnavich, Dimitriadis, Holoien, Shaya, Rest, & others.