Journal Article

Constraining white-dwarf kicks in globular clusters – III. Cluster heating

Jeremy Heyl

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 390, issue 2, pages 622-624
Published in print October 2008 | ISSN: 0035-8711
Published online October 2008 | e-ISSN: 1365-2966 | DOI:
Constraining white-dwarf kicks in globular clusters – III. Cluster heating

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Recent observations of white dwarfs in globular clusters indicate that these stars may get a velocity kick during their time as giants. This velocity kick could originate naturally if the mass loss while on the asymptotic giant branch is slightly asymmetric. The kicks may be large enough to dramatically change the radial distribution of young white dwarfs, giving them larger energies than other stars in the cluster. As these energetic white dwarfs travel through the cluster, they can impart their excess energy on the other stars in the cluster. This new heat source for globular clusters is expected to be largest during the clusters' youth.

Keywords: stars: AGB and post-AGB; stars: mass loss; white dwarfs; stars: winds, outflows; globular clusters: general

Journal Article.  1825 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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