The KELT Follow-up Network and Transit False-positive Catalog: Pre-vetted False Positives for TESS
Authors: Collins Karen A. , Collins Kevin I. , Pepper Joshua , Labadie-Bartz Jonathan , Stassun Keivan G. , Gaudi B. Scott , Bayliss Daniel , Bento Joao , COLÓN Knicole D. , Feliz Dax , James David , Johnson Marshall C. , Kuhn Rudolf B. , Lund Michael B. , Penny Matthew T. , Rodriguez Joseph E. , Siverd Robert J. , Stevens Daniel J. , Yao Xinyu , Zhou George , Akshay Mundra , Aldi Giulio F. , Ashcraft Cliff , Awiphan Supachai , Baştürk Özgür , Baker David , Beatty Thomas G. , Benni Paul , Berlind Perry , Bruce Berriman G. , Berta-Thompson Zach , Bieryla Allyson , Bozza Valerio , Calchi Novati Sebastiano , Calkins Michael L. , Cann Jenna M. , Ciardi David R. , Clark Ian R. , Cochran William D. , Cohen David H. , Conti Dennis , Crepp Justin R. , Curtis Ivan A. , D’Ago Giuseppe , Diazeguigure Kenny A. , Dressing Courtney D. , Dubois Franky , Ellingson Erica , Ellis Tyler G. , Esquerdo Gilbert A. , Evans Phil , Friedli Alison , Fukui Akihiko , Fulton Benjamin J. , Gonzales Erica J. , Good John C. , Gregorio Joao , Gumusayak Tolga , Hancock Daniel A. , Harada Caleb K. , Hart Rhodes , Hintz Eric G. , Jang-Condell Hannah , Jeffery Elizabeth J. , Jensen Eric L. N. , Jofré Emiliano , Joner Michael D. , Kar Aman , Kasper David H. , Keten Burak , Kielkopf John F. , Komonjinda Siramas , Kotnik Cliff , Latham David W. , Leuquire Jacob , Lewis Tiffany R. , Logie Ludwig , Lowther Simon J. , Macqueen Phillip J. , Martin Trevor J. , Mawet Dimitri , Mcleod Kim K. , Murawski Gabriel , Narita Norio , Nordhausen Jim , Oberst Thomas E. , Odden Caroline , Panka Peter A. , Petrucci Romina , Plavchan Peter , Quinn Samuel N. , Rau Steve , Reed Phillip A. , Relles Howard , Renaud Joe P. , Scarpetta Gaetano , Sorber Rebecca L. , Spencer Alex D. , Spencer Michelle , Stephens Denise C. , Stockdale Chris , Tan Thiam-Guan , Trueblood Mark , Trueblood Patricia , Vanaverbeke Siegfried , Villanueva Steven , Warner Elizabeth M. , Lou West Mary , Yalçınkaya Selçuk , Yeigh Rex , Zambelli Roberto 
Published: November 2018

Abstract
The Kilodegree Extremely Little Telescope (KELT) project has been conducting a photometric survey of transiting planets orbiting bright stars for over 10 years. The KELT images have a pixel scale of ∼23″ pixel−1—very similar to that of NASA’s Transiting Exoplanet Survey Satellite (TESS)—as well as a large point-spread function, and the KELT reduction pipeline uses a weighted photometric aperture with radius 3′. At this angular scale, multiple stars are typically blended in the photometric apertures. In order to identify false positives and confirm transiting exoplanets, we have assembled a follow-up network (KELT-FUN) to conduct imaging with spatial resolution, cadence, and photometric precision higher than the KELT telescopes, as well as spectroscopic observations of the candidate host stars. The KELT-FUN team has followed-up over 1600 planet candidates since 2011, resulting in more than 20 planet discoveries. Excluding ∼450 false alarms of non-astrophysical origin (i.e., instrumental noise or systematics), we present an all-sky catalog of the 1128 bright stars (6 < V < 13) that show transit-like features in the KELT light curves, but which were subsequently determined to be astrophysical false positives (FPs) after photometric and/or spectroscopic follow-up observations. The KELT-FUN team continues to pursue KELT and other planet candidates and will eventually follow up certain classes of TESS candidates. The KELT FP catalog will help minimize the duplication of follow-up observations by current and future transit surveys such as TESS.