Parameters of cool companions of sdB stars

DOI

We present the analysis of a high-resolution, high-quality sample of optical spectra for 76 subdwarf B (sdB) stars from the ESO Supernova Ia Progenitor Survey (SPY, Napiwotzki et al., 2001A&A...367..973N). Effective temperature, surface gravity, and photospheric helium abundance are determined simultaneously by fitting the profiles of hydrogen and helium lines using synthetic spectra calculated from LTE and NLTE model atmospheres. We perform a detailed comparison of our measurements with theoretical calculations, both for single star evolution and for binary population synthesis models of close binary evolution.

Cone search capability for table J/A+A/430/223/table1 (Results of our spectral analysis.)

Identifier
DOI http://doi.org/10.26093/cds/vizier.34300223
Source https://dc.g-vo.org/rr/q/lp/custom/CDS.VizieR/J/A+A/430/223
Related Identifier https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/430/223
Related Identifier http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/430/223
Metadata Access http://dc.g-vo.org/rr/q/pmh/pubreg.xml?verb=GetRecord&metadataPrefix=oai_b2find&identifier=ivo://CDS.VizieR/J/A+A/430/223
Provenance
Creator Lisker T.; Heber U.; Napiwotzki R.; Christlieb N.; Han Z.; Homeier D.,Reimers D.
Publisher CDS
Publication Year 2006
Rights https://cds.unistra.fr/vizier-org/licences_vizier.html
OpenAccess true
Contact CDS support team <cds-question(at)unistra.fr>
Representation
Resource Type Dataset; AstroObjects
Discipline Astrophysics and Astronomy; Natural Sciences; Physics; Stellar Astronomy