MML 53: a new low-mass, pre-main sequence eclipsing binary in the Upper Centaurus-Lupus region discovered by SuperWASP

Don Pollacco

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13 Citations (Scopus)

Abstract

We announce the discovery of a new low-mass, pre-main sequence eclipsing binary, MML 53. Previous observations of MML 53 found it to be a pre-main sequence spectroscopic multiple associated with the 15-22 Myr Upper Centaurus-Lupus cluster. We identify the object as an eclipsing binary for the first time through the analysis of multiple seasons of time series photometry from the SuperWASP transiting planet survey. Re-analysis of a single archive spectrum shows MML 53 to be a spatially unresolved triple system of young stars which all exhibit significant lithium absorption. Two of the components comprise an eclipsing binary with period, P = 2.097891(6) ± 0.000005 and mass ratio, q ~ 0.8. Here, we present the analysis of the discovery data.
Original languageEnglish
Article numberA37
Pages (from-to)A37
Number of pages1
JournalAstronomy and Astrophysics
Volume522
Issue number2
DOIs
Publication statusPublished - 28 Nov 2010

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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