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Optical Spectroscopic Monitoring of the Carbon-Rich Post-AGB Star HD 56126: Pulsation and Shock Waves

Published online by Cambridge University Press:  25 May 2016

Agnès Lèbre
GRAAL, Université de Montpellier, 34095 Montpellier cedex 5, France
Nicolas Mauron
GRAAL, Université de Montpellier, 34095 Montpellier cedex 5, France
Denis Gillet
Observatoire de Haute Provence, 04870 Saint Michel l'Observatoire, France
Dominique Barthès
GRAAL, Université de Montpellier, 34095 Montpellier cedex 5, France


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A spectroscopic monitoring of the post-AGB star HD 56126 was performed as regularly as possible over a 14-month interval in order to study atmospheric motions that could be associated with shock wave propagation through the stellar atmosphere. Some spectral features are strongly variable on a timescale of a few days. Radial velocity variations are also good evidence for complex atmospheric dynamics, in agreement with the recently found photometric variability. The data point to a pulsating nature for HD 56126, with a main period of 27.3 days.

Session V — Post-AGB Stars
Copyright © Kluwer 2000 


Bogaert, E. 1994, , Google Scholar
Bujarrabal, V., Alcolea, J. & Planesas, P. 1992, A&A, 257, 701 Google Scholar
Buss, R.H. Jr., Cohen, M., Tielens, A.G.G.M., Werner, M. W., Bregman, J. D., Witteborn, F. C., Rank, D. & Sandford, S. A. 1990, ApJ, 365, L23 CrossRefGoogle Scholar
Fokin, A. B. 1991, MNRAS, 250, 258 CrossRefGoogle Scholar
Jeannin, L., Fokin, A. B., Gillet, D. & Baraffe, I. 1996, A&A, 314, L1 Google Scholar
Klochkova, V. G. 1995, MNRAS, 272, 710 Google Scholar
Kwok, S., Hrivnak, B. J. & Geballe, T. R. 1990, ApJ, 360, L23 CrossRefGoogle Scholar
Kwok, S., Volk, K. M. & Hrivnak, B. J. 1989, ApJ, 345, L51 CrossRefGoogle Scholar
Lèbre, A. & Gillet, D. 1991, A&A, 246, 490 Google Scholar
Lèbre, A. & Gillet, D. 1992, A&A, 255, 221 Google Scholar
Lèbre, A., Mauron, N., Gillet, D. & Barthès, D. 1996, A&A, 310, 923 Google Scholar
Omont, A., Moseley, S. H., Cox, P., Glaccum, W., Casey, S., Forveille, T., Chan, K.-W., Szczerba, R., Loewenstein, R. F., Harvey, P. H. & Kwok, S. 1995, ApJ, 454, 819 CrossRefGoogle Scholar
Oudmaijer, R. D. & Bakker, E. J. 1994, MNRAS, 271, 615 CrossRefGoogle Scholar
Parthasarathy, M., Garcia Lario, P. & Pottasch, S. R. 1992, A&A, 264, 159 Google Scholar
Roberts, D. H., Lehár, J. & Dreher, J. W. 1987, AJ, 93, 968 CrossRefGoogle Scholar
Zuckerman, B., Dyck, H. M. & Claussen, M. J. 1986, ApJ, 304, 401 CrossRefGoogle Scholar