4 papers · 1 filter
Atmospheric dynamics in carbon-rich Miras. I. Model atmospheres and synthetic line profiles
W. Nowotny, B. Aringer, S. Hoefner +2
Atmospheres of evolved AGB stars are heavily affected by pulsation, dust formation and mass loss, and they can become very extended. Time series of observed high-resolution spectra…
Synthetic Line Profiles for Pulsating Red Giants
W. Nowotny, B. Aringer, S. Hoefner +3
Pulsation influences atmospheric structures of variable AGB stars (Miras) considerably. Spectral lines of the CO dv=3 vibration-rotation bands (at 1.6mue) therefore have a very cha…
Dynamic model atmospheres of cool giants
S. Hoefner, R. Gautschy-Loidl, B. Aringer +3
Cool giant stars are highly dynamical objects, and complex micro-physical processes play an important role in their extended atmospheres and winds. The interpretation of observatio…
Dust grain properties in atmospheres of AGB stars
A. C. Andersen, S. Hoefner, R. Gautschy-Loidl
We present self-consistent dynamical models for dust driven winds of carbon-rich AGB stars. The models are based on the coupled system of frequency-dependent radiation hydrodynamic…