Hubble Space Telescope spectroscopy of OB stars in M31

Details Hubble Space Telescope spectroscopy of OB stars in M31 Hubble Space Telescope spectroscopy of OB stars in M31

Nov 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...400l..35h&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 400, no. 1, p. L35-L38.

Astronomy and Astrophysics

Astrophysics

23

Andromeda Galaxy, Astronomical Spectroscopy, Eclipsing Binary Stars, Hubble Space Telescope, O Stars, Wolf-Rayet Stars, Interstellar Extinction, Stellar Mass Ejection, Stellar Spectra, Stellar Winds, Ultraviolet Spectra

Scientific paper

We have obtained UV spectra of two luminous hot stars in M31 with the Hubble Space Telescope. The stars are of late O and WN spectral type and lie on opposite sides of M31. We derive UV extinction curves for M31 which differ from both the Galaxy and the LMC. We find differences between the IS absorbers in both lines of sight in M31 and in the Galactic halo. The stellar wind-driven mass loss of the stars is found to be 10 times lower than in similar Galactic stars. One star appears to be an eclipsing W-R binary.

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