Astronomy and Astrophysics – Astrophysics
Scientific paper
2001-05-08
Mon.Not.Roy.Astron.Soc. 326 (2001) 821
Astronomy and Astrophysics
Astrophysics
14 pages, 10 figures, to be published in MNRAS
Scientific paper
10.1046/j.1365-8711.2001.04632.x
The importance of Partial Redistribution (PRD) in the modelling of the Lyman Alpha and Lyman Beta emission lines of hydrogen in stellar atmospheres is examined using simple atmospheric models of a range of late-type stars. These models represent the sub-giant Procyon (F5 IV-V), and the two giants Beta Gem (K0 III) and Alpha Tau (K5 III). These stars are selected to span a wide range of surface gravities: 1.25 < log g < 4.00. The calculations are performed using the computer code MULTI (Carlsson 1986) with the modifications made by Hubeny & Lites (1995). It is found that PRD effects are highly significant, both in the direct prediction of the Lyman line profiles and in the application of hydrostatic equilibrium (HSE) to calculate the atmospheric electron density in static atmospheric models.
No associations
LandOfFree
Modelling the H Lyman lines in evolved late-type stars 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 Modelling the H Lyman lines in evolved late-type stars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Modelling the H Lyman lines in evolved late-type stars will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-19963