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Usher, CG, Kamann, S, Gieles, M, Hénault-Brunet, V, Dalessandro, E, Balbinot, E and Sollima, A (2021) MUSE narrow field mode observations of the central kinematics of M15. Monthly Notices of the Royal Astronomical Society, 503 (2). ISSN 0035-8711
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Abstract
We present observations of the stellar kinematics of the centre of the core collapsed globular cluster M15 obtained with the MUSE integral field spectrograph on the VLT operating in narrow field mode. Thanks to the use of adaptive optics, we obtain a spatial resolution of 0.1arcsec and are able to reliably measure the radial velocities of 864 stars within 8 arcsec of the centre of M15 thus providing the largest sample of radial velocities ever obtained for the innermost regions of this system. Combined with previous observations of M15 using MUSE in wide field mode and literature data, we find that the central kinematics of M15 are complex with the rotation axis of the core of M15 offset from the rotation axis of the bulk of the cluster. While this complexity has been suggested by previous work, we confirm it at higher significance and in more detail.
| Item Type: | Article |
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| Additional Information: | This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: 2021 THE Authors Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved. |
| Uncontrolled Keywords: | astro-ph.GA; astro-ph.GA |
| Subjects: | Q Science > QB Astronomy Q Science > QC Physics |
| Divisions: | Astrophysics Research Institute |
| Publisher: | Oxford University Press |
| Related URLs: | |
| Date Deposited: | 26 Feb 2021 09:45 |
| Last Modified: | 04 Sep 2021 05:52 |
| DOI or ID number: | 10.1093/mnras/stab565 |
| URI: | https://researchonline.ljmu.ac.uk/id/eprint/14517 |
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