MML 53: a new low-mass, pre-main sequence eclipsing binary in the Upper Centaurus-Lupus region discovered by SuperWASP
2010 (English)In: Astronomy and Astrophysics, ISSN 0004-6361, E-ISSN 1432-0746, Vol. 522, no 2, A37- p.Article in journal (Refereed) Published
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 similar to 0.8. Here, we present the analysis of the discovery data.
Place, publisher, year, edition, pages
2010. Vol. 522, no 2, A37- p.
binaries: eclipsing, stars: pre-main sequence, stars: fundamental parameters
IdentifiersURN: urn:nbn:se:uu:diva-147103DOI: 10.1051/0004-6361/201014059ISI: 000284153100043OAI: oai:DiVA.org:uu-147103DiVA: diva2:399951