Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apj...255..278l&link_type=abstract
Astrophysical Journal, Part 1, vol. 255, Apr. 1, 1982, p. 278-285.
Astronomy and Astrophysics
Astrophysics
104
Hot Stars, Resonance Lines, Stellar Mass Ejection, Stellar Spectra, Stellar Winds, Line Spectra, Quasars, Shock Fronts, Stellar Envelopes
Scientific paper
A proposed mechanism of X-ray emission from the winds of hot stars is tested by investigating its consequences for their circumstellar spectra. A hypothesized X-ray emitting shock front is predicted to produce P Cygni line profiles that, when saturated, are not reproducible with a monotonic wind. Extended absorption troughs with essentially zero residual intensities have been proposed as a useful spectroscopic diagnostic of nonmonotonic flow. Applied to observed profiles, this diagnostic does indeed indicate the existence of multiply nonmonotonic velocity fields in the outer parts of these winds, wherein the bulk of the X-ray emission is in fact predicted to originate. A quantitative analysis of the N V resonance line in the spectrum of one star reveals its absorption trough to be in strong contradiction with the hypothesis of a monotonic wind but not in contradiction with a nonmonotonic wind.
No associations
LandOfFree
The formation of resonance lines in locally nonmonotonic winds 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 formation of resonance lines in locally nonmonotonic winds, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The formation of resonance lines in locally nonmonotonic winds will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-840586