Comparison of winds in the small Magellanic Cloud and galactic early-type stars
Journal Article
·
· Astrophys. J., Lett. Ed.; (United States)
IUE low-resolution spectra of 11 OB stars in the Small Magellanic Cloud reveal considerably lower wind velocities than corresponding galactic stars. The reduced efffectiveness of radiative acceleration due to lower abundances of heavy elements in the SMC is believed to be responsible for this effect. The absorption strengths of the SMC P Cygni profiles are somewhat weaker in Si IV and much weaker in C IV. Crude estimates of relative mass-loss rate suggest that the observed differences may be dominated by the differing relative abundances of Si and C, although a lower degree of wind ionization or lower mass-loss rates for the SMC stars cannot be ruled out.
- Research Organization:
- Astronomy Department, Computer Sciences Corporation
- OSTI ID:
- 5290963
- Journal Information:
- Astrophys. J., Lett. Ed.; (United States), Journal Name: Astrophys. J., Lett. Ed.; (United States) Vol. 256:2; ISSN AJLEA
- Country of Publication:
- United States
- Language:
- English
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