On the origin of a rotating metal-poor stellar population in the Milky Way Nuclear Cluster
Sedda, Manuel Arca, Gualandris, Alessia, Do, Tuan, Feldmeier-Krause, Anja, Neumayer, Nadine and Erkal, Denis (2020) On the origin of a rotating metal-poor stellar population in the Milky Way Nuclear Cluster Astrophysical Journal Letters.
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Abstract
We explore the origin of a population of stars recently detected in the inner parsec of the Milky Way Nuclear Cluster (NC), which exhibit sub-solar metallicity and a higher rotation compared to the dominant population. Using state-of-the-art N-body simulations, we model the infall of massive stellar systems into the Galactic center, both of Galactic and extra-galactic origin. We show that the newly discovered population can either be the remnant of a massive star cluster formed a few kpc away from the Galactic center (Galactic scenario) or be accreted from a dwarf galaxy originally located at 10-100 kpc (extragalactic scenario) and that reached the Galactic center 3
Item Type: | Article | |||||||||||||||||||||
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Divisions : | Faculty of Engineering and Physical Sciences > Physics | |||||||||||||||||||||
Authors : |
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Date : | 23 August 2020 | |||||||||||||||||||||
Uncontrolled Keywords : | black holes - supermassive black holes - galactic nuclei - gravitational waves | |||||||||||||||||||||
Additional Information : | Embargo OK Metadata Pending | |||||||||||||||||||||
Depositing User : | James Marshall | |||||||||||||||||||||
Date Deposited : | 25 Aug 2020 10:24 | |||||||||||||||||||||
Last Modified : | 25 Aug 2020 10:24 | |||||||||||||||||||||
URI: | http://epubs.surrey.ac.uk/id/eprint/858491 |
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