Near-IR spectral atlas of OB stars

DOI

We present intermediate-resolution (R~8000-12000) high signal-to-noise (S/N) H- and K-band spectroscopy of a sample of 37 optically visible stars, ranging in spectral type from O3 to B3 and representing most luminosity classes. Spectra of this quality can be used to constrain the temperature, luminosity, and general wind properties of OB stars, when used in conjunction with sophisticated atmospheric model codes. Most important is the need for moderately high resolutions (R>=5000) and very high signal-to-noise (S/N>=150) spectra for a meaningful profile analysis. When using near-infrared spectra for a classification system, moderately high signal-to-noise (S/N~100) is still required, though the resolution can be relaxed to just a thousand or two. In the Appendix we provide a set of very high-quality near-infrared spectra of Brackett lines in six early-A dwarfs. These can be used to aid in the modeling and removal of such lines when early-A dwarfs are used for telluric spectroscopic standards.

Cone search capability for table J/ApJS/161/154/table1 (and Observing Data)

Cone search capability for table J/ApJS/161/154/table3 (Telluric stars)

Associated data

Identifier
DOI http://doi.org/10.26093/cds/vizier.21610154
Source https://dc.g-vo.org/rr/q/lp/custom/CDS.VizieR/J/ApJS/161/154
Related Identifier https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/161/154
Related Identifier http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/161/154
Related Identifier https://cdsarc.cds.unistra.fr/assocdata/?obs_collection=J/ApJS/161/154
Metadata Access http://dc.g-vo.org/rr/q/pmh/pubreg.xml?verb=GetRecord&metadataPrefix=oai_b2find&identifier=ivo://CDS.VizieR/J/ApJS/161/154
Provenance
Creator Hanson M.M.; Kudritzki R.-P.; Kenworthy M.A.; Puls J.; Tokunaga A.T.
Publisher CDS
Publication Year 2007
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; Cosmology; Interdisciplinary Astronomy; Natural Sciences; Observational Astronomy; Physics; Stellar Astronomy