Observations, analysis, and spectroscopic classification of HO piscium: a bright shallow-contact binary with G- and M-type components

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DOIResolve DOI: http://doi.org/10.1086/666748
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TypeArticle
Journal titlePublications of the Astronomical Society of the Pacific
ISSN0004-6280
Volume124
Issue917
Pages693699; # of pages: 7
AbstractWe present a spectrum and a photometric analysis of the newly discovered, high-amplitude, solartype, eclipsing binary HO Piscium. A spectroscopic identification, a period study, q-search, and a simultaneous UBVR cI c light-curve solution are presented. The spectra and our photometric solution indicate that HO Psc is a W-typeWUMa shallow-contact (fill-out ~8%) binary system. The primary component has a G6V spectral type with an apparently precontact spectral type of M2V for the secondary component. The small fill-out indicates that the system has not yet achieved thermal contact and thus has recently come into physical contact. This may mean that this solar-type binary system has not attained its ~0:4 mass ratio via a long period of magnetic braking, as would normally be assumed.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); National Science Infrastructure
Peer reviewedYes
NPARC number21270321
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Record identifier332858eb-4ed9-4b7f-b6bc-42e0b849d334
Record created2014-01-24
Record modified2016-05-09
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