Atmospheric Dynamics of Post-AGB Stars: New Results on the Nature of the Pulsation of HD 56126

Details Atmospheric Dynamics of Post-AGB Stars: New Results on the Nature of the Pulsation of HD 56126 Atmospheric Dynamics of Post-AGB Stars: New Results on the Nature of the Pulsation of HD 56126

Aug 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001assl..265..105l&link_type=abstract

Post-AGB Objects as a Phase of Stellar Evolution, Proceedings of the Toruń Workshop held July 5-7, 2000. Edited by R. Szczerba a

Astronomy and Astrophysics

Astrophysics

Scientific paper

We present a complete analysis of spectroscopic and photometric observations of HD 56126, IRAS 07134+1005 a variable carbon-rich post-AGB star. In order to improve the knowledge of its pulsation and of its fundamental parameters, we have computed a set of linear and non-linear pulsating models relevant to the post-AGB stars. From two different observational data sets, we find a main pulsating period P = 36.8 +/- 0.2 days. The spectroscopic and photometric variations we analysed appear to be consistent with a radial pulsation (the dominant pulsation mode is the first overtone) yielding shock waves which propagate throughout the atmosphere and generate a complex, asynchronous motion of the outer layers.

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