4 papers
Atmospheric dynamics in carbon-rich Miras. II. Models meet observations
W. Nowotny, T. Lebzelter, J. Hron +1
Originating in different depths of the very extended atmospheres of AGB stars, various molecular spectral lines observable in the near-infrared show diverse behaviours and can be u…
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…