The Mg II lines in A dwarf stars.
Abstract
High resolution IUE spectra, in the spectral region of the Mg II resonance lines of 16 A stars were obtained. To interpret these observations, the formation of Mg II lines in an A type stellar atmosphere for different values of Mg abundance and microturbulence within the framework of the NLTE theory with complete and partial redistribution of the Mg II line profiles were studied. Observed and computed line profiles are compared and abundance values are established. Theoretical stellar line profiles are used to determine the interstellar contribution to the observed stellar Mg II line profiles.
- Publication:
-
Fourth European IUE Conference
- Pub Date:
- July 1984
- Bibcode:
- 1984ESASP.218..211F
- Keywords:
-
- Astronomy;
- A Stars;
- Dwarf Stars;
- Line Spectra;
- Magnesium;
- Interstellar Chemistry;
- Iue;
- Stellar Atmospheres;
- Stellar Spectra;
- A Dwarfs:Magnesium;
- A Dwarfs:UV Spectra;
- UV Spectra:A Dwarfs