Rappaport, SA, Borkovits, T, Gagliano, R, Jacobs, TL, Kostov, VB, Powell, BP, Terentev, I, Omohundro, M, Torres, G, Vanderburg, A, Mitnyan, T, Kristiansen, MH, LaCourse, D, Schwengeler, HM, Kaye, TG, Pál, A, Pribulla, T, Bíró, IB, Csányi, I, Garai, Z, Zasche, P, Maxted, PFL ORCID: https://orcid.org/0000-0003-3794-1317, Rodriguez, JE and Stevens, DJ (2022) Six new compact triply eclipsing triples found with <i>TESS</i>. Monthly Notices of the Royal Astronomical Society, 513 (3). 4341 - 4360.

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Abstract

In this work, we report the discovery and analysis of six new compact triply eclipsing triple star systems found with the TESS mission: TICs 37743815, 42565581, 54060695, 178010808, 242132789, and 456194776. All of these exhibit distinct third-body eclipses where the inner eclipsing binary (EB) occults the third ('tertiary') star, or vice versa. We utilized the TESS photometry, archival photometric data, and available archival spectral energy distribution curves (SED) to solve for the properties of all three stars, as well as many of the orbital elements. We describe in detail our SED fits, search of the archival data for the outer orbital period, and the final global photodynamical analyses. From these analyses, we find that all six systems are coplanar to within 0 degrees-5 degrees, and are viewed nearly edge on (i.e. within a couple of degrees). The outer orbital periods and eccentricities of the six systems are {P-out (days), e}: {68.7, 0.36}, {123, 0.16}, {60.7, 0.01}, {69.0, 0.29}, {41.5, 0.01}, {93.9, 0.29}, respectively, in the order the sources are listed above. The masses of all 12 EB stars were in the range of 0.7-1.8 M-circle dot and were situated near the main sequence. By contrast, the masses and radii of the tertiary stars ranged from 1.5 to 2.3 M-circle dot and 2.9 to 12 R-circle dot, respectively. We use this information to estimate the occurrence rate of compact flat triple systems..

Item Type: Article
Additional Information: © 2022 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society This article is published and distributed under the terms of the Oxford University Press, Standard Journals Publication Model (https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model) The final version of this article and all relevant information related to it, including copyrights, can be found on the publisher website.
Uncontrolled Keywords: binaries: close; binaries: eclipsing; stars: individual: TIC 37743815, TIC 42565581, TIC 54060695, TIC 178010808, TIC 242132789, TIC 456194776
Subjects: Q Science > QB Astronomy
Q Science > QB Astronomy > QB460 Astrophysics
Q Science > QB Astronomy > QB799 Stars
Depositing User: Symplectic
Date Deposited: 01 Jun 2022 11:06
Last Modified: 05 Jul 2022 13:36
URI: https://eprints.keele.ac.uk/id/eprint/10984

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