101 Eclipsing Quadruple Star Candidates Discovered in TESS Full Frame Images

Veselin B. Kostov; Brian P. Powell; Saul A. Rappaport; Tamas Borkovits; Robert Gagliano; Thomas L. Jacobs; Rahul Jayaraman; Martti H. Kristiansen; Daryll M. LaCourse; Tibor Mitnyan; Mark Omohundro; Jerome Orosz; Andras Pal; Allan R. Schmitt; Hans M. Schwengeler; Ivan A. Terentev; Guillermo Torres; Thomas Barclay; Andrew Vanderburg; William Welsh

arXiv · 2309.14200

101 Eclipsing Quadruple Star Candidates Discovered in TESS Full Frame Images

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Abstract

We present our second catalog of quadruple star candidates, containing 101 systems discovered in TESS Full-Frame Image data. The targets were initially detected as eclipsing binary stars with the help of supervised machine learning methods applied to sectors Sectors 1 through 54. A dedicated team of citizen scientists subsequently identified through visual inspection two sets of eclipses following two different periods. All 101 systems presented here pass comprehensive photocenter motion tests confirming that both sets of eclipses originate from the target star. Some of the systems exhibit prominent eclipse time variations suggesting dynamical interactions between the two component binary stars. One target is an eclipsing quintuple candidate with a (2+1)+2 hierarchical configuration, such that the (2+1) subsystem produces eclipses on the triple orbit as well. Another has recently been confirmed as the second shortest period quadruple reported to date. This catalog provides ephemerides, eclipse depths and durations, sample statistics, and highlights potentially interesting targets for future studies.

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Veselin B. Kostov, Brian P. Powell, Saul A. Rappaport, Tamas Borkovits, Robert Gagliano, Thomas L. Jacobs, Rahul Jayaraman, Martti H. Kristiansen, Daryll M. LaCourse, Tibor Mitnyan, Mark Omohundro, Jerome Orosz, Andras Pal, Allan R. Schmitt, Hans M. Schwengeler, Ivan A. Terentev, Guillermo Torres, Thomas Barclay, Andrew Vanderburg, William Welsh. 2023-09-25. 101 Eclipsing Quadruple Star Candidates Discovered in TESS Full Frame Images. https://arxiv.org/abs/2309.14200

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