Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001apj...547.1040p&link_type=abstract
The Astrophysical Journal, Volume 547, Issue 2, pp. 1040-1056.
Astronomy and Astrophysics
Astronomy
21
Radiative Transfer, Stars: Atmospheres, Stars: Individual: Name: Vega, Stars: Individual: Constellation Name: Et Andromedae, Stars: Individual: Henry Draper Number: Hd 101065
Scientific paper
We describe a new method for computing opacity distribution functions (ODFs) for model atmosphere calculations. The method is tailored to model the atmospheres of individual stars on a modern workstation. Our goal is the computation of model atmospheres for stars with abundances significantly different from the solar or scaled solar composition typically used for grid calculations. As a consistency test, we show that the new procedure is able to reproduce the ODFs and existing model atmospheres for solar abundances, and we describe models for stars with peculiar abundances. We demonstrate that while mild chemical peculiarities can be well represented by scaled solar models, the extreme cases result in a very different atmospheric structure with no analogs in scaled solar grids. Such a structure influences the emerging spectrum as is clearly seen both in the observed flux distribution and in the line ratios that are much better represented by the new models.
Kupka Friedrich
Piskunov Nicolai
No associations
LandOfFree
Model Atmospheres with Individualized Abundances 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 Model Atmospheres with Individualized Abundances, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Model Atmospheres with Individualized Abundances will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1712554