2023/09/25 by Veselin B. Kostov, Brian P. Powell, Kostov, Veselin B. +37 · 3 citations
Engineering · Physics and Astronomy · #Astronomical Observations and Instrumentation #FOS: Physical sciences #Inertial Sensor and Navigation #Solar and Stellar Astrophysics (astro-ph.SR) #Stellar, planetary, and galactic studies
paper · pdf · doi:10.48550/arxiv.2309.14200
openalex publication_date 2023/09/25 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We present our second catalog of quadruple star candidates, containing 101\nsystems discovered in TESS Full-Frame Image data. The targets were initially\ndetected as eclipsing binary stars with the help of supervised machine learning\nmethods applied to sectors Sectors 1 through 54. A dedicated team of citizen\nscientists subsequently identified through visual inspection two sets of\neclipses following two different periods. All 101 systems presented here pass\ncomprehensive photocenter motion tests confirming that both sets of eclipses\noriginate from the target star. Some of the systems exhibit prominent eclipse\ntime variations suggesting dynamical interactions between the two component\nbinary stars. One target is an eclipsing quintuple candidate with a (2+1)+2\nhierarchical configuration, such that the (2+1) subsystem produces eclipses on\nthe triple orbit as well. Another has recently been confirmed as the second\nshortest period quadruple reported to date. This catalog provides ephemerides,\neclipse depths and durations, sample statistics, and highlights potentially\ninteresting targets for future studies.\n