Post-AGB Stars with Circumbinary Discs

Details Post-AGB Stars with Circumbinary Discs Post-AGB Stars with Circumbinary Discs

2012-03-29

arxiv.org/abs/1203.6471v1

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

7 pages, 3 figures

Scientific paper

Circumbinary discs are commonly observed around post-asymptotic giant branch (AGB) systems and are known to play an important role in their evolution. Several studies have pointed out that a circumbinary disc interacts through resonances with the central binary and leads to angular momentum transfer from the central binary orbit to the disc. This interaction may be responsible for a substantial increase in the binary eccentricity. We investigate whether this disc eccentricity-pumping mechanism can be responsible for the high eccentricities commonly found in post-AGB binary systems.

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