Hostname: page-component-586b7cd67f-rcrh6 Total loading time: 0 Render date: 2024-11-28T22:14:31.205Z Has data issue: false hasContentIssue false
  • English
  • Français

The loss of large amplitude pulsations at the end of AGB evolution

Published online by Cambridge University Press:  30 December 2019

D. Engels ,
S. Etoka  and
E. Gérard
D. Engels
Affiliation:
Hamburger Sternwarte, Universität Hamburg, Germany, email: [email protected]
S. Etoka
Affiliation:
Jodrell Bank Centre for Astrophysics, University of Manchester, UK, email: [email protected]
E. Gérard
Affiliation:
GEPI, Observatoire de Paris, Meudon, France, email: [email protected]
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Since 2013, we are performing with the Nancay Radio Telescope (NRT) a monitoring program of > 100 Galactic disk OH/IR stars, having bright 1612-MHz OH maser emission. The variations of the maser emission are used to probe the underlying stellar variability. We wish to understand how the large-amplitude variations are lost during the AGB – post-AGB transition. The fading out of pulsations with steadily declining amplitudes seems to be a viable process.

Keywords

stars: AGB and post-AGBmasersstars: evolution
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 14 , Symposium S343: Why Galaxies Care About AGB Stars: A Continuing Challenge through Cosmic Time , August 2018 , pp. 389 - 390
Copyright
© International Astronomical Union 2019 

References

Baud, B., Habing, H. J., Matthews, H. E., & Winnberg, A., 1981, A&A, 95, 156 Google Scholar
Blöcker, T., 1995, A&A, 299, 755 Google Scholar
Chong, S.-N., Imai, H., & Diamond, P.J., 2015, ApJ, 805, 53 CrossRefGoogle Scholar
Engels, D., 2002, A&A, 388, 252 Google Scholar
Engels, D., 2007, “Asym. Planetary Neb. IV; http://www.iac.es/proyect/apn4, article #52”Google Scholar
Engels, D. & Jiménez-Esteban, F., 2007, A&A, 475, 941 Google Scholar
Engels, D., Etoka, S., West, M., & Gérard, E., 2018, “Astrophysical Masers, IAUS 336”, p. 389 CrossRefGoogle Scholar
Herman, J. & Habing, H. J., 1985, A&AS, 59, 523 (HH85)Google ScholarPubMed
Miller Bertolami, M. M., 2016 A&A, 588, A25 (MB16)Google Scholar
Sahai, R., Morris, M., Sánchez Contreras, C., & Claussen, M., 2007, AJ, 134, 2200 CrossRefGoogle Scholar
Sánchez Contreras, C., Le Mignant, D., Sahai, R., et al., 2007, ApJ, 656, 1150 CrossRefGoogle Scholar
Vassiliadis, E. & Wood, P. R., 1994, ApJS, 92, 125 CrossRefGoogle Scholar
Wolak, P., Szymczak, M., Bartkiewicz, A., & Gérard, E., 2014, “EVN 2014; http://pos.sissa.it/cgi-bin/reader/conf.cgi?confid=230, id.116”Google Scholar