GALEX survey subdwarf atmospheric parameters

We present an update of our low-resolution spectroscopic follow-up and model atmosphere analysis of hot subdwarf stars from the Galaxy Evolution Explorer (GALEX) survey. Targets were selected on the basis of colour indices calculated from the GALEX GR6 N_UV_, Guide Star Catalogue (GSC2.3.2) Vand the Two Micron All Sky Survey (2MASS) J and H photometry. High signal-to-noise ratio spectra were obtained at the European Southern Observatory (ESO) and the Kitt Peak National Observatory (KPNO) over the course of three years. Detailed H, He and CNO abundance analysis helped us improve our T_eff_, logg and He abundance determination and to constrain CNO abundances. We processed 191 observations of 180 targets and found 124 sdB and 42 sdO stars in this sample while some blue horizontal branch stars were also found in this programme. With quantitative binary decomposition of 29 composite spectra we investigated the incidence of A, F and G type companions. The incidence of late G and K type companions and their effects on subdwarf atmospheric parameters were also examined.

Cone search capability for table J/MNRAS/427/2180/table3b (Other targets that are not part of the GALEX UV selection (Companions))

Cone search capability for table J/MNRAS/427/2180/table2 (Atmospheric parameters of hot subdwarf stars in the GALEX survey (Single stars and primaries))

Cone search capability for table J/MNRAS/427/2180/table2b (Atmospheric parameters of hot subdwarf stars in the GALEX survey (Companions))

Cone search capability for table J/MNRAS/427/2180/table3 (Other targets that are not part of the GALEX UV selection (Single stars and primaries))

Identifier
Source https://dc.g-vo.org/rr/q/lp/custom/CDS.VizieR/J/MNRAS/427/2180
Related Identifier https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/427/2180
Related Identifier http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/427/2180
Metadata Access http://dc.g-vo.org/rr/q/pmh/pubreg.xml?verb=GetRecord&metadataPrefix=oai_b2find&identifier=ivo://CDS.VizieR/J/MNRAS/427/2180
Provenance
Creator Nemeth P.; Kawka A.; Vennes S.
Publisher CDS
Publication Year 2015
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; Interdisciplinary Astronomy; Natural Sciences; Observational Astronomy; Physics; Stellar Astronomy