The Chemical Compositions of the SRd Variable Stars. I. XY Aquarii, RX Cephei, AB Leonis, and SV Ursae Majoris

dc.contributor.author	Giridhar, S
dc.contributor.author	Lambert, D. L
dc.contributor.author	Gonzalez, G
dc.date.accessioned	2008-09-06T11:27:27Z
dc.date.available	2008-09-06T11:27:27Z
dc.date.issued	1998-06
dc.identifier.citation	The Publications of the Astronomical Society of the Pacific, Vol. 110, No. 748, pp. 671 - 675	en
dc.identifier.issn	0004 - 6280
dc.identifier.uri	http://hdl.handle.net/2248/3421
dc.description.abstract	Chemical compositions are derived from high-resolution spectra for four stars classed as SRd variables in the General Catalogue of Variable Stars. Two stars—XY Aquarii and RX Cephei—are of solar metallicity and most likely not variable stars. Their spectroscopic effective temperatures and surface gravities correspond to the spectral types G0 V for XY Aqr and G8 III for RX Cep. Two stars are undisputed variables and shown here to be metal-poor supergiants: AB Leonis with [Fe/H] and SV Ursae Majoris with [Fe/H] . The metallicities and high radial velocities show them to be halo stars	en
dc.language.iso	en	en
dc.publisher	The Astronomical Society of the Pacific	en
dc.relation.uri	http://www.journals.uchicago.edu/doi/abs/10.1086/316179	en
dc.subject	Chemical Compositions	en
dc.subject	SRd Variable Stars	en
dc.title	The Chemical Compositions of the SRd Variable Stars. I. XY Aquarii, RX Cephei, AB Leonis, and SV Ursae Majoris	en
dc.type	Article	en