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Color excesses, intrinsic colors, and absolute magnitudes of Galactic and Large Magellanic Cloud Wolf-Rayet stars
- Source :
- The Astrophysical Journal Supplement Series. 73:685
- Publication Year :
- 1990
- Publisher :
- American Astronomical Society, 1990.
-
Abstract
- A new method of determining the color excesses of WR stars in the Galaxy and the LMC has been developed and is used to determine the excesses for 44 Galactic and 32 LMC WR stars. The excesses are combined with line-free, narrow-band spectrophotometry to derive intrinsic colors of the WR stars of nearly all spectral subtypes. No correlation of UV spectral index or intrinsic colors with spectral subtype is found for the samples of single WN or WC stars. There is evidence that early WN stars in the LMC have flatter UV continua and redder intrinsic colors than early WN stars in the Galaxy. No separation is found between the values derived for Galactic WC stars and those obtained for LMC WC stars. The intrinsic colors are compared with those calculated from model atmospheres of WR stars and generally good agreement is found. Absolute magnitudes are derived for WR stars in the LMC and for those Galactic WR stars located in clusters and associations for which there are reliable distance estimates.
- Subjects :
- Physics
Absolute magnitude
Astrophysics::High Energy Astrophysical Phenomena
Milky Way
Astronomy
Astronomy and Astrophysics
Astrophysics::Cosmology and Extragalactic Astrophysics
Astrophysics
Galaxy
Astronomical spectroscopy
Stars
Wolf–Rayet star
Apparent magnitude
Space and Planetary Science
Astrophysics::Solar and Stellar Astrophysics
Astrophysics::Earth and Planetary Astrophysics
Large Magellanic Cloud
Astrophysics::Galaxy Astrophysics
Subjects
Details
- ISSN :
- 15384365 and 00670049
- Volume :
- 73
- Database :
- OpenAIRE
- Journal :
- The Astrophysical Journal Supplement Series
- Accession number :
- edsair.doi...........0db43a67da239448de1a3c3a24ae4319