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Using MUSE-AO observations to constrain the formation of the large nuclear star cluster in FCC 47

Published online by Cambridge University Press:  11 March 2020

Katja Fahrion Open the ORCID record for Katja Fahrion [Opens in a new window] ,
Mariya Lyubenova ,
Glenn van de Ven Open the ORCID record for Glenn van de Ven [Opens in a new window]  and
Michael Hilker Open the ORCID record for Michael Hilker [Opens in a new window]
Katja Fahrion
Affiliation:
European Southern Observatory, Karl-Scharzschild-Straße 2, 85748 Garching bei München, Germany email: [email protected]
Mariya Lyubenova
Affiliation:
European Southern Observatory, Karl-Scharzschild-Straße 2, 85748 Garching bei München, Germany email: [email protected]
Glenn van de Ven
Affiliation:
Department of Astrophysics, University of Vienna, Türkenschanzenstrasse 17, 1180 Wien, Austria
Michael Hilker
Affiliation:
European Southern Observatory, Karl-Scharzschild-Straße 2, 85748 Garching bei München, Germany email: [email protected]
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Abstract

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Nuclear star clusters (NSCs) are found in at least 70% of all galaxies, but their formation path is still unclear. In the most common scenarios, NSCs form in-situ from the galaxy’s central gas reservoir, through merging of globular clusters (GCs), or through a combination of the two. As the scenarios pose different expectations for angular momentum and stellar population properties of the NSC in comparison to the host galaxy and the GC system, it is necessary to characterise the stellar light, NSC, and GCs simultaneously. Wide-field observations with modern integral field units such as the Multi Unit Spectroscopic Explorer (MUSE) allow to perform such studies. However, at large distances, NSCs usually are not resolved in MUSE observations. The particularly large NSC (Reff ∼ 66 pc) of the early-type galaxy FCC 47 at distance of ∼20 Mpc is an exception and is therefore an ideal laboratory to constrain NSC formation of external galaxies.

Keywords

galaxies: individual (NGC 1336)galaxies: star clusters
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. 108 - 111
Copyright
© International Astronomical Union 2020

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