Synthetic Line Profiles for Pulsating Red Giants
- Author(s)
- Walter Nowotny-Schipper, Bernhard Aringer, Susanne Höfner, Rita Gautschy-Loidl, Josef Hron, Walter Windsteig
- Abstract
Pulsation influences atmospheric structures of variable AGB stars (Miras) considerably. Spectral lines of the CO =3 vibration rotation bands (at ? 1.6 ?m) therefore have a very characteristic appearance in time series of high-resolution spectra. Coupled to the light cycle they can be observed blue- or red-shifted, for some phases even line doubling is found. This is being explained by radial pulsations and shock fronts emerging in the atmospheres. Based on dynamic model atmospheres synthetic CO line profiles were calculated consistently, reproducing this scenario qualitatively.
- Organisation(s)
- Department of Astrophysics
- External organisation(s)
- Uppsala University
- Pages
- 281-284
- No. of pages
- 4
- DOI
- https://doi.org/10.1007/10995082_44
- Publication date
- 2005
- Austrian Fields of Science 2012
- 1030 Physics, Astronomy
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/24da4ed4-ef63-4a2d-83e0-f33d2fa808e7