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Understanding the dynamical status of Galactic Globular Cluster NGC 6656

Published online by Cambridge University Press:  11 March 2020

Gaurav Singh Open the ORCID record for Gaurav Singh [Opens in a new window]  and
R. K. S. Yadav
Gaurav Singh
Affiliation:
Arybhatta Research Institute of Observational Sciences, Manora Peak, Nainital 263002, India emails: gaurav@aries.res.in, rkant@aries.res.in Dept. of Physics & Astrophysics, University of Delhi, Delhi110007, India
R. K. S. Yadav
Affiliation:
Arybhatta Research Institute of Observational Sciences, Manora Peak, Nainital 263002, India emails: gaurav@aries.res.in, rkant@aries.res.in
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Abstract

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We present the study of horizontal branch morphology of the cluster NGC 6656. A blueward shift in temperature of about ~5000 K (nM-jump) in the color-color plot is detected.To explain this feature, we study the presence of stellar-mass black hole by plotting Projected density profile (PDP) in the central HST region. The PDP in the inner region (r < 10″) can be nicely reproduced by the king+BH model. The blue ward shift in temperature can be due the presence of stellar mass black holes in the centre.

Keywords

(stars:) blue stragglersstars: black holesstars: horizontal branchPlease provide keywords
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 14 , Symposium S351: Star Clusters: From the Milky Way to the Early Universe , May 2019 , pp. 512 - 515
Copyright
© International Astronomical Union 2020

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