The Tidal Tails of the Ultra-Faint Globular Cluster Palomar 1
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Niederste-Ostholt, M, Belokurov, V, Evans, NW, Koposov, S, Gieles, M and Irwin, MJ (2010) The Tidal Tails of the Ultra-Faint Globular Cluster Palomar 1
Full text not available from this repository.Abstract
Using the Optimal Filter Technique applied to Sloan Digital Sky Survey photometry, we have found extended tails stretching about 1 degree (or several tens of half-light radii) from either side of the ultra-faint globular cluster Palomar 1. The tails contain roughly as many stars as does the cluster itself. Using deeper Hubble Space Telescope data, we see that the isophotes twist in a chacteristic S-shape on moving outwards from the cluster centre to the tails. We argue that the main mechanism forming the tails may be relaxation driven evaporation and that Pal 1 may have been accreted from a now disrupted dwarf galaxy ~500 Myr ago.
| Item Type: | Article | |||||||||||||||||||||
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| Divisions : | Surrey research (other units) | |||||||||||||||||||||
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| Date : | 16 July 2010 | |||||||||||||||||||||
| DOI : | 10.1111/j.1745-3933.2010.00931.x | |||||||||||||||||||||
| Uncontrolled Keywords : | astro-ph.GA, astro-ph.GA | |||||||||||||||||||||
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| Depositing User : | Symplectic Elements | |||||||||||||||||||||
| Date Deposited : | 17 May 2017 12:40 | |||||||||||||||||||||
| Last Modified : | 24 Jan 2020 22:38 | |||||||||||||||||||||
| URI: | http://epubs.surrey.ac.uk/id/eprint/836260 |
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