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

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

Oct 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008mnras.390..622h&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 390, Issue 2, pp. 622-624.

Astronomy and Astrophysics

Astronomy

7

Stars: Agb And Post-Agb, Stars: Mass Loss, White Dwarfs, Stars: Winds, Outflows, Globular Clusters: General

Scientific paper

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.

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