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- Title
On the presence of intermediate black holes in three globular clusters.
- Authors
Baumgardt, Holger; Sollima, Antonio; Hilker, Michael
- Abstract
We investigate whether the globular clusters 47 Tuc, ω Cen and NGC 6624 contain intermediate-mass black holes (IMBHs) by fitting a large grid of N -body simulations against their surface density and velocity dispersion profiles. In our simulations we vary the initial cluster size, the initial mass function and the initial density profile of the clusters as well as the mass fraction of a central intermediate-mass black hole. We find that the surface density and velocity dispersion profiles of all three clusters can be better reproduced by models that do not contain a central IMBH than by any of our IMBH models. If ω Cen and NGC 6624 contain any IMBHs at all, they have to be significantly less massive than suggested in the past.
- Publication
Proceedings of the International Astronomical Union, 2019, Vol 14, Issue 351, p400
- ISSN
1743-9213
- Publication type
Article
- DOI
10.1017/S1743921319007695