High Mass Triple Systems: The Classical Cepheid Y Car

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dc.creatorEvans, N. R.
dc.creatorCarpenter, K. G.
dc.creatorRobinson, R.
dc.creatorKienzle, F.
dc.creatorDekas, A. E.
dc.date2005-04-07
dc.date.accessioned2026-07-07T11:29:40Z
dc.date.available2026-07-07T11:29:40Z
dc.descriptionWe have obtained an HST STIS ultraviolet high dispersion Echelle mode spectrum the binary companion of the double mode classical Cepheid Y Car. The velocity measured for the hot companion from this spectrum is very different from reasonable predictions for binary motion, implying that the companion is itself a short period binary. The measured velocity changed by 7 km/ s during the 4 days between two segments of the observation confirming this interpretation. We summarize "binary" Cepheids which are in fact members of triple system and find at least 44% are triples. The summary of information on Cepheids with orbits makes it likely that the fraction is under-estimated.
dc.descriptionaccepted by AJ
dc.identifierhttps://arxiv.org/abs/astro-ph/0504169
dc.identifierhttp://arxiv.org/abs/astro-ph/0504169
dc.identifierAstron.J.130:789-793,2005
dc.identifierdoi:10.1086/430458
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/196788
dc.subjectAstrophysics
dc.titleHigh Mass Triple Systems: The Classical Cepheid Y Car
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