Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985a%26a...149...73p&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 149, no. 1, Aug. 1985, p. 73-82.
Astronomy and Astrophysics
Astrophysics
9
Stellar Envelopes, Stellar Mass Ejection, Stellar Models, Stellar Spectra, Stellar Winds, Ultraviolet Spectra, Absorption Spectra, B Stars, O Stars, Radial Velocity, Sobolev Space
Scientific paper
Using simplifying assumptions (Sobolev approximation, spherical symmetry, monotonic velocity laws) the effects of episodic mass loss enhancements on theoretical P Cygni profiles have been investigated, with emphasis on their possible relevance to observations of narrow absorption components in UV spectra of OB stars. For a density enhancement that does not change after the initial shell ejection, the 'underlying' profile is significantly distorted at intermediate velocities (of about 0.4-0.8 nu x infinity) for a substantial fraction (about 20 percent) of the total time over which the shell is detectable. Better agreement with observations is achieved with frequent shell ejection (in terms of observable lifetime) and an ionization fraction inn the shell which increases with time.
Howarth Ian D.
Prinja Raman K.
No associations
LandOfFree
The effects of episodic mass-loss enhancements on theoretical P Cygni profiles does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The effects of episodic mass-loss enhancements on theoretical P Cygni profiles, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The effects of episodic mass-loss enhancements on theoretical P Cygni profiles will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-752631