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Orbital properties of binary post-AGB stars

Published online by Cambridge University Press:  30 December 2019

Glenn-Michael Oomen Open the ORCID record for Glenn-Michael Oomen [Opens in a new window] ,
Hans Van Winckel  and
Onno Pols
Glenn-Michael Oomen
Affiliation:
Instituut voor Sterrenkunde, KU Leuven, Celestijnenlaan 200D, B-3001, Leuven, Belgium Department of Astrophysics/IMAPP, Radboud University, P.O. Box 9010, 6500 GL Nijmegen, the Netherlands email: glennmichael.oomen@kuleuven.be
Hans Van Winckel
Affiliation:
Instituut voor Sterrenkunde, KU Leuven, Celestijnenlaan 200D, B-3001, Leuven, Belgium
Onno Pols
Affiliation:
Department of Astrophysics/IMAPP, Radboud University, P.O. Box 9010, 6500 GL Nijmegen, the Netherlands email: glennmichael.oomen@kuleuven.be
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Abstract

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We present the results of a decade-long radial velocity monitoring campaign of post-AGB binaries. We derived the orbital elements of 33 post-AGB binaries. We find a companion mass distribution centred around 1.09 M⊙ with a very large spread. All the post-AGB binaries in our sample are expected to have filled their Roche lobes while at giant dimensions. Current binary evolution models are unable to explain the observed distribution of orbits.

Keywords

stars: AGB and post-AGBbinaries: general
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. 230 - 234
Copyright
© International Astronomical Union 2019 

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