AbstractWe review the contribution of ultraviolet astronomy to the study of OB stars. UV resonance lines of ions such as C3+, N4+, and Si3+ provide sensitive indicators of mass loss for OB stars. We show how observations of the corresponding P Cygni profiles have tested basic predictions of stellar wind theory— that mass-loss rates should scale with luminosity, that maximum flow velocites should scale with surface escape velocities, and that both should scale with metallicity. We emphasize the rôle that IUE has played in providing an understanding of variability in stellar winds, and conclude with an outline of the likely significance of future observations made below the IUE (and HST) limit of ∼120nm, down to ∼10nm.
Hot Stars: Beyond the balmer jump
Advances in Space Research ; 11 , 11 ; 15-24
01.01.1991
10 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Balmer Lawrie leads Indian charge
British Library Online Contents | 2009
PACKAGING & DISTRIBUTION - Balmer Lawrie leads Indian charge
Online Contents | 2009
STEEL DRUMS - Balmer Lawrie on the Indian market
Online Contents | 2008
X-ray Properties of Double-Peaked Balmer-Line Active Galaxies
British Library Conference Proceedings | 2005
|