Intermediate-mass black holes in Globular Clusters

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 p...

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Published in:arXiv.org 2013-01
Main Authors: Lützgendorf, Nora, Kissler-Patig, Markus, Gebhardt, Karl, Baumgardt, Holger, Noyola, Eva, de Zeeuw, P Tim, Neumayer, Nadine, Jalali, Behrang, Feldmeier, Anja
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Language:English
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Galactic clusters
Globular clusters
Integrals
Kinematics
Luminosity
Spectrum analysis
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creator Lützgendorf, Nora
Kissler-Patig, Markus
Gebhardt, Karl
Baumgardt, Holger
Noyola, Eva
de Zeeuw, P Tim
Neumayer, Nadine
Jalali, Behrang
Feldmeier, Anja
description 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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subjects Galactic clusters
Globular clusters
Integrals
Kinematics
Luminosity
Spectrum analysis
title Intermediate-mass black holes in Globular Clusters
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