Post Main Sequence Orbital Circularization of Binary Stars in the Large and Small Magellanic Clouds

Simple item page
dc.creatorFaccioli, Lorenzo
dc.creatorAlcock, Charles
dc.creatorCook, Kem
dc.date2007-11-11
dc.date2007-11-17
dc.date.accessioned2026-07-07T09:25:24Z
dc.date.available2026-07-07T09:25:24Z
dc.descriptionWe present results from a study of the orbits of eclipsing binary stars (EBs) in the Magellanic Clouds. The samples comprise 4510 EBs found in the Large Magellanic Cloud (LMC) by the MACHO project, 2474 LMC EBs found by the OGLE-II project (of which 1182 are also in the MACHO sample), 1380 in the Small Magellanic Cloud (SMC) found by the MACHO project, and 1317 SMC EBs found by the OGLE-II project (of which 677 are also in the MACHO sample); we also consider the EROS sample of 79 EBs in the bar of the LMC. Statistics of the phase differences between primary and secondary minima allow us to infer the statistics of orbital eccentricities within these samples. We confirm the well-known absence of eccentric orbit in close binary stars. We also find evidence for rapid circularization in longer period systems when one member evolves beyond the main sequence, as also found by previous studies.
dc.description37 pages, 16 figures, accepted for publication in ApJ. Added a new reference and updated information on on line material
dc.identifierhttps://arxiv.org/abs/0711.1633
dc.identifierhttp://arxiv.org/abs/0711.1633
dc.identifierApJ, 672:604, 2008 January 1
dc.identifierdoi:10.1086/523881
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/156393
dc.subjectAstrophysics
dc.titlePost Main Sequence Orbital Circularization of Binary Stars in the Large and Small Magellanic Clouds
dc.typetext

Files

Collections

arXiv