constraining roche-lobe overflow models using the hot-subdwarf wide binary population

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ID: 184217
2017
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Abstract
One of the important issues regarding the final evolution of stars is the impact of binarity. A rich zoo of peculiar, evolved objects are born from the interaction between the loosely bound envelope of a giant, and the gravitational pull of a companion. However, binary interactions are not understood from first principles, and the theoretical models are subject to many assumptions. It is currently agreed upon that hot subdwarf stars can only be formed through binary interaction, either through common envelope ejection or stable Roche-lobe overflow (RLOF) near the tip of the red giant branch (RGB). These systems are therefore an ideal testing ground for binary interaction models. With our long term study of wide hot subdwarf (sdB) binaries we aim to improve our current understanding of stable RLOF on the RGB by comparing the results of binary population synthesis studies with the observed population. In this article we describe the current model and possible improvements, and which observables can be used to test different parts of the interaction model.
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joris2017openconstraining Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Vos Joris;Vučković Maja
Journal deviant behavior
Year 2017
DOI
10.1515/astro-2017-0443
URL
http://www.degruyter.com/view/j/astro.2017.26.issue-1/astro-2017-0443/astro-2017-0443.xml?format=INT
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