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The loss of OH maser emission in the early stage of Post-AGB evolution

Published online by Cambridge University Press:  07 February 2024

S. Etoka Open the ORCID record for S. Etoka [Opens in a new window] ,
D. Engels Open the ORCID record for D. Engels [Opens in a new window] ,
T. Ullrich ,
J.B. González  and
B. López-Martí
S. Etoka*
Affiliation:
Jodrell Bank Centre of Astrophysics, Manchester, UK,
D. Engels
Affiliation:
Hamburger Sternwarte, Universität Hamburg, Germany
T. Ullrich
Affiliation:
Hamburger Sternwarte, Universität Hamburg, Germany
J.B. González
Affiliation:
MAX IV Laboratory, Lund University, Sweden
B. López-Martí
Affiliation:
Universidad San Pablo - CEU, Madrid, Spain
*
Sandra.Etoka@googlemail.com
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Abstract

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Based on the results of an on-going monitoring program of 1612 MHz OH masers in OH/IR stars, we determined a lifetime encompassing late AGB and early post-AGB evolution of at least 4500 years. Fading of the OH masers observed with the Nançay Radio Telescope is detected in several post-AGB OH/IR stars on timescales of decades, while AllWISE/NEOWISE light curves taken almost in parallel show diverse behaviours.

Keywords

masersinfrared: starsstars: AGB and post-AGBstar: evolution
Type
Poster Paper
Information
Proceedings of the International Astronomical Union , Volume 18 , Symposium S380: Cosmic Masers: Proper Motion toward the Next-Generation Large Projects , December 2022 , pp. 371 - 373
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Creative Commons
Creative Common License - CCCreative Common License - BY
This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted re- use, distribution and reproduction, provided the original article is properly cited.
Copyright
© The Author(s), 2024. Published by Cambridge University Press on behalf of International Astronomical Union

References

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