Year: 2020
Type: article
Abstract: We have identified a quadruple system with two close eclipsing binaries in Transiting Exoplanet Survey Satellite (TESS) data. The object is unresolved in Gaia and appears as a single source at parallax 1.08 ± 0.01 mas. Both binaries have observable primary and secondary eclipses and were monitored throughout TESS Cycle 1 (sectors 1–13), falling within the TESS Continuous Viewing Zone. In one eclipsing binary (P = 5.488 days), the smaller star is completely occluded by the larger star during the secondary eclipse; in the other (P = 5.674 days) both eclipses are grazing. Using these data, spectroscopy, speckle photometry, spectral energy distribution analysis, and evolutionary stellar tracks, we have constrained the masses and radii of the four stars in the two eclipsing binaries. The Li i equivalent width indicates an age of 10–50 Myr and, with an outer period of days, our analysis indicates this is one of the most compact young 2 + 2 quadruple systems known.
Source: The Astronomical Journal
Authors: Pamela Rowden, Tamás Borkovits, Jon M. Jenkins, Keivan G. Stassun, Joseph D. Twicken, Elisabeth R. Newton, Carl Ziegler, Coel Hellier, Aylin Garcia Soto, Elisabeth C. Matthews, Ulrich Kolb, George R. Ricker, Roland Vanderspek, David W. Latham, S. Seager, Joshua N. Winn, Luke G. Bouma, César Briceño, David Charbonneau, William Fong, Ana Glidden, Natalia M. Guerrero, Nicholas Law, Andrew W. Mann, Mark E. Rose, Joshua Schlieder, Peter Tenenbaum, Eric B. Ting
Institutions: The Open University, University of Szeged, Konkoly Observatory, HUN-REN Research Centre for Astronomy and Earth Sciences, Ames Research Center, Vanderbilt University, Fisk University, Search for Extraterrestrial Intelligence, Dartmouth College, University of Toronto, Keele University, Massachusetts Institute of Technology, Center for Astrophysics Harvard & Smithsonian, Princeton University, Cerro Tololo Inter-American Observatory, University of North Carolina at Chapel Hill, Goddard Space Flight Center
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: bronze
Award: G8898318431
OpenAlex ID: W3034233847