Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987a%26a...177...42s&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 177, no. 1-2, May 1987, p. 42-50.
Astronomy and Astrophysics
Astrophysics
27
Absorption Spectra, Lyman Alpha Radiation, Quasars, Stellar Mass Ejection, Emission Spectra, Line Spectra, Nitrogen
Scientific paper
The possibility that the observed broad absorption line (BAL) profiles are formed in spherically symmetric atmospheres is investigated, and it is found that BAL and non-BAL QSOs form two distinct classes of quasars. It is shown that the small residual intensity and large equivalent width noted for some absorption troughs may be reproduced by the resonance scattering of line photons across spherically symmetric BAL regions. N V emission strength is found to be higher in the spectrum of BAL QSOs than in that of non-BAL QSOs. Good agreement between theory and the observed attenuation of the Ly-alpha emission line, the observed enhancement of the N V emission strength, and the possible presence of a shoulderlike feature in the red wing of the N V emission profile is obtained.
Hutsemékers Damien
Surdej Jean
No associations
LandOfFree
Geometry of the mass-outflows around broad absorption line QSOs and formation of the complex Ly-alpha + N V line profile 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 Geometry of the mass-outflows around broad absorption line QSOs and formation of the complex Ly-alpha + N V line profile, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Geometry of the mass-outflows around broad absorption line QSOs and formation of the complex Ly-alpha + N V line profile will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-855787