Astronomy and Astrophysics – Astrophysics
Scientific paper
Mar 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987a%26a...174..158c&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 174, no. 1-2, March 1987, p. 158-172.
Astronomy and Astrophysics
Astrophysics
68
A Stars, B Stars, H Alpha Line, Pre-Main Sequence Stars, Stellar Spectra, Stellar Winds, Chromosphere, Hydrogen Atoms, Oscillator Strengths, Photosphere, Radiative Transfer, Stellar Mass Ejection
Scientific paper
The authors present the results of a detailed quantitative interpretation of Hα and other hydrogen lines of AB Aur, considered as representative of part of the pre-main-sequence Herbig Ae/Be stars. They have used the equivalent-two-level-atom approach to solve the radiative transfer problem and the equations of statistical equilibrium in the context of the multi-level hydrogen atom. The calculations show that the model which had been derived previously from the interpretation of the Mg II and the C IV resonance lines, and which involves a wind including an extended chromosphere, is also successful in reproducing the observed emission component of Hα. The mass-loss rate is 1×10-8 ≤ M≤ 1.8×10-8M_sun; yr-1. Finally, as a by-product of the Hα calculations, the profiles of Hβ, Hγ, Pα, and Bα have been computed, as well as the emergent continuum flux.
Catala Claude
Kunasz Paul Belknap
No associations
LandOfFree
Line formation in the winds of Herbig Ae/Be stars - The H-alpha line 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 Line formation in the winds of Herbig Ae/Be stars - The H-alpha line, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Line formation in the winds of Herbig Ae/Be stars - The H-alpha line will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1451306