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Analysis of the eclipsing binaries in the LMC discovered by OGLE: period distribution and frequency of the short-period binaries

Mazeh, Tsevi and Tamuz, Omer and North, Pierre (2006) Analysis of the eclipsing binaries in the LMC discovered by OGLE: period distribution and frequency of the short-period binaries. . (Submitted) http://resolver.caltech.edu/CaltechAUTHORS:20161115-085954023

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Abstract

We review the results of our analysis of the OGLE LMC eclipsing binaries (Mazeh, Tamuz & North 2006), using EBAS -- Eclipsing Binary Automated Solver, an automated algorithm to fit lightcurves of eclipsing binaries (Tamuz, Mazeh & North 2006). After being corrected for observational selection effects, the set of detected eclipsing binaries yielded the period distribution and the frequency of all LMC short-period binaries, and not just the eclipsing systems. Somewhat surprisingly, the period distribution is consistent with a flat distribution in log P between 2 and 10 days. The total number of binaries with periods shorter than 10 days in the LMC was estimated to be about 5000. This figure led us to suggest that (0.7 ± 0.4)% of the main-sequence A- and B-type stars are found in binaries with periods shorter than 10 days. This frequency is substantially smaller than the fraction of binaries found by small Galactic radial-velocity surveys of B stars.


Item Type:Report or Paper (Discussion Paper)
Related URLs:
URLURL TypeDescription
https://arxiv.org/abs/astro-ph/0611482arXivDiscussion Paper
ORCID:
AuthorORCID
Tamuz, Omer0000-0002-0111-0418
Additional Information:We are grateful to the OGLE team, and to L. Wyrzykowski in particular, for the photometric data set and for the eclipsing binary analysis. This work was supported by the Israeli Science Foundation through grant no. 03/233.
Funders:
Funding AgencyGrant Number
Israel Science Foundation03/233
Subject Keywords:methods: data analysis, binaries: eclipsing, Magellanic Clouds
Record Number:CaltechAUTHORS:20161115-085954023
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20161115-085954023
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:72020
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:15 Nov 2016 21:32
Last Modified:15 Nov 2016 21:32

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