The KELT Follow-Up Network and Transit False Positive Catalog: Pre-vetted False Positives for TESS
Karen A. Collins, Kevin I. Collins, Joshua Pepper, Jonathan, Labadie-Bartz, Keivan Stassun, B. Scott Gaudi, Daniel Bayliss, Joao Bento,, Knicole D. Col\'on, Dax Feliz, David James, Marshall C. Johnson, Rudolf B., Kuhn, Michael B. Lund, Matthew T. Penny, Joseph E. Rodriguez

TL;DR
This paper presents a catalog of 1,128 bright stars with transit-like signals identified as false positives through follow-up observations, aiding future exoplanet surveys like TESS in reducing redundant efforts.
Contribution
It provides the first all-sky catalog of astrophysical false positives from KELT data, enhancing the efficiency of exoplanet validation for TESS and other surveys.
Findings
Over 1,600 follow-ups conducted since 2011
More than 20 planets discovered by KELT-FUN
Catalog of 1,128 false positives published
Abstract
The Kilodegree Extremely Little Telescope (KELT) project has been conducting a photometric survey for transiting planets orbiting bright stars for over ten years. The KELT images have a pixel scale of ~23"/pixel---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 higher spatial resolution, cadence, and photometric precision than the KELT telescopes, as well as spectroscopic observations of the candidate host stars. The KELT-FUN team has followed-up over 1,600 planet candidates since 2011, resulting in…
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