Kavli Affiliate: Saul A. Rappaport
| First 5 Authors: Veselin B. Kostov, Veselin B. Kostov, , ,
| Summary:
We present the discovery of 52 eclipsing quadruple star candidates detected
in TESS Full Frame Image eleanor data by machine learning and citizen
scientists. The uniformly-vetted and -validated targets exhibit two sets of
eclipses following two distinct periods, representing quadruple systems with a
2+2 hierarchical configuration. Detailed photocenter measurements confirmed
that both sets of eclipses originate within ~0.1-0.2 pixels (~2-4 arcsec) of
the corresponding target, and ruled out resolved nearby field stars. The
catalog includes a number of systems producing prominent eclipse timing
variations and/or apsidal motion, a quadruple with an outer period of ~1,400
days, and even a 2+2 quadruple in a likely wide quintuple with a resolved
co-moving star. Additionally, two systems have complete astrometric solutions
for the outer orbits from Gaia. We provide the measured ephemerides, eclipse
depths and durations, overall statistical properties, and highlight potentially
interesting systems that merit further investigations.
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