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Identification, classifications, and absolute properties of 773 eclipsing binaries found in the Trans-Atlantic Exoplanet Survey

Devor, Jonathan and Charbonneau, David and O'Donovan, Francis T. and Mandushev, Georgi and Torres, Guillermo (2008) Identification, classifications, and absolute properties of 773 eclipsing binaries found in the Trans-Atlantic Exoplanet Survey. Astronomical Journal, 135 (3). pp. 850-877. ISSN 0004-6256. doi:10.1088/0004-6256/135/3/850.

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In recent years, we have witnessed an explosion of photometric time-series data, collected for the purpose of finding a small number of rare sources, such as transiting extrasolar planets and gravitational microlenses. Once combed, these data are often set aside, and are not further searched for the many other variable sources that they undoubtedly contain. To this end, we describe a pipeline that is designed to systematically analyze such data, while requiring minimal user interaction. We ran our pipeline on a subset of the Trans-Atlantic Exoplanet Survey dataset, and used it to identify and model 773 eclipsing binary systems. For each system we conducted a joint analysis of its light curve, colors, and theoretical isochrones. This analysis provided us with estimates of the binary's absolute physical properties, including the masses and ages of their stellar components, as well as their physical separations and distances. We identified three types of eclipsing binaries that are of particular interest and merit further observations. The first category includes 11 low-mass candidates, which may assist current efforts to explain the discrepancies between the observation and the models of stars at the bottom of the main sequence. The other two categories include 34 binaries with eccentric orbits, and 20 binaries with abnormal light curves. Finally, this uniform catalog enabled us to identify a number of relations that provide further constraints on binary population models and tidal circularization theory.

Item Type:Article
Related URLs:
URLURL TypeDescription
Charbonneau, David0000-0002-9003-484X
O'Donovan, Francis T.0000-0002-4858-6106
Torres, Guillermo0000-0002-5286-0251
Additional Information:© 2008 The American Astronomical Society. Received 2007 September 5; accepted 2007 December 5; published 2008 February 5. Print publication: Issue 3 (2008 March). We would like to thank Tsevi Mazeh for many useful discussions, as well as Søren Meibom for his repeated help. We would also like to thank Sarah Dykstra for her continuous support throughout the preparation of this paper. We are grateful to the staff of the Palomar Observatory for their assistance in operating the Sleuth instrument, and we acknowledge support from NASA through grant NNG05GJ29G issued through the Origins of Solar Systems Program. This research has made use of the NASA's Astrophysics Data System Bibliographic Services, the SIMBAD database, operated at CDS, Strasbourg, and the VSX database, which was created by Christopher Watson for the AAVSO. This publication also utilizes data products from 2MASS, which is a joint project of the University of Massachusetts and the Infrared Processing and Analysis Center/California Institute of Technology, funded by NASA and NSF. Finally, we would like to thank the anonymous referee for very insightful comments and suggestions, which significantly improved this manuscript. [D..C. was an] Alfred P. Sloan Research Fellow.
Funding AgencyGrant Number
Alfred P. Sloan FoundationUNSPECIFIED
Subject Keywords:binaries: eclipsing; catalogs; methods: data analysis; stars: statistics; techniques: photometric
Issue or Number:3
Record Number:CaltechAUTHORS:DEVaj08
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:13280
Deposited By: Tony Diaz
Deposited On:10 Feb 2009 20:12
Last Modified:08 Nov 2021 22:36

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