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arXiv · 1301.2998

Intermediate-mass black holes in Globular Clusters

Nora Lützgendorf·Markus Kissler-Patig·Karl Gebhardt·Holger Baumgardt·Eva Noyola·P. Tim de Zeeuw·Nadine Neumayer·Behrang Jalali·Anja Feldmeier
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Abstract

For a sample of nine Galactic globular clusters we measured the inner kinematic profiles with integral-field spectroscopy that we combined with existing outer kinematic measurements and HST luminosity profiles. With this information we are able to detect the crucial rise in the velocity-dispersion profile which indicates the presence of a central black hole. In addition, N-body simulations compared to our data will give us a deeper insight in the properties of clusters with black holes and stronger selection criteria for further studies. For the first time, we obtain a homogeneous sample of globular cluster integral- field spectroscopy which allows a direct comparison between clusters with and without an intermediate-mass black hole.

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Nora Lützgendorf, Markus Kissler-Patig, Karl Gebhardt, Holger Baumgardt, Eva Noyola, P. Tim de Zeeuw, Nadine Neumayer, Behrang Jalali, Anja Feldmeier. 2013-01-14. Intermediate-mass black holes in Globular Clusters. https://arxiv.org/abs/1301.2998

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