A population of faint low surface brightness galaxies in the Perseus cluster core
We present the detection of 89 low surface brightness (LSB), and thus low stellar density galaxy candidates in the Perseus cluster core, of the kind named ‘ultra-diffuse galaxies’, with mean effective V-band surface brightnesses 24.8-27.1 mag arcsec−2, total V-band magnitudes −11.8 to −15.5 mag, and...
| Main Authors: | , , , , , , , , , |
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| Format: | Article |
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Oxford University Press
2017
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| Online Access: | https://eprints.nottingham.ac.uk/43610/ |
| _version_ | 1848796728110612480 |
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| author | Wittmann, Carolin Lisker, Thorsten Ambachew Tilahun, Liyualem Grebel, Eva K. Conselice, Christopher J. Penny, Samantha Janz, Joachim Gallagher, John S. Kotulla, Ralf McCormac, James |
| author_facet | Wittmann, Carolin Lisker, Thorsten Ambachew Tilahun, Liyualem Grebel, Eva K. Conselice, Christopher J. Penny, Samantha Janz, Joachim Gallagher, John S. Kotulla, Ralf McCormac, James |
| author_sort | Wittmann, Carolin |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | We present the detection of 89 low surface brightness (LSB), and thus low stellar density galaxy candidates in the Perseus cluster core, of the kind named ‘ultra-diffuse galaxies’, with mean effective V-band surface brightnesses 24.8-27.1 mag arcsec−2, total V-band magnitudes −11.8 to −15.5 mag, and half-light radii 0.7-4.1 kpc. The candidates have been identified in a deep mosaic covering 0.3 square degrees, based on wide-field imaging data obtained with the William Herschel Telescope. We find that the LSB galaxy population is depleted in the cluster centre and only very few LSB candidates have half-light radii larger than 3 kpc. This appears consistent with an estimate of their tidal radius, which does not reach beyond the stellar extent even if we assume a high dark matter content (M/L = 100). In fact, three of our candidates seem to be associated with tidal streams, which points to their current disruption. Given that published data on faint LSB candidates in the Coma cluster – with its comparable central density to Perseus – show the same dearth of large objects in the core region, we conclude that these cannot survive the strong tides in the centres of massive clusters. |
| first_indexed | 2025-11-14T19:52:35Z |
| format | Article |
| id | nottingham-43610 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T19:52:35Z |
| publishDate | 2017 |
| publisher | Oxford University Press |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-436102020-05-04T19:05:51Z https://eprints.nottingham.ac.uk/43610/ A population of faint low surface brightness galaxies in the Perseus cluster core Wittmann, Carolin Lisker, Thorsten Ambachew Tilahun, Liyualem Grebel, Eva K. Conselice, Christopher J. Penny, Samantha Janz, Joachim Gallagher, John S. Kotulla, Ralf McCormac, James We present the detection of 89 low surface brightness (LSB), and thus low stellar density galaxy candidates in the Perseus cluster core, of the kind named ‘ultra-diffuse galaxies’, with mean effective V-band surface brightnesses 24.8-27.1 mag arcsec−2, total V-band magnitudes −11.8 to −15.5 mag, and half-light radii 0.7-4.1 kpc. The candidates have been identified in a deep mosaic covering 0.3 square degrees, based on wide-field imaging data obtained with the William Herschel Telescope. We find that the LSB galaxy population is depleted in the cluster centre and only very few LSB candidates have half-light radii larger than 3 kpc. This appears consistent with an estimate of their tidal radius, which does not reach beyond the stellar extent even if we assume a high dark matter content (M/L = 100). In fact, three of our candidates seem to be associated with tidal streams, which points to their current disruption. Given that published data on faint LSB candidates in the Coma cluster – with its comparable central density to Perseus – show the same dearth of large objects in the core region, we conclude that these cannot survive the strong tides in the centres of massive clusters. Oxford University Press 2017-09-11 Article PeerReviewed Wittmann, Carolin, Lisker, Thorsten, Ambachew Tilahun, Liyualem, Grebel, Eva K., Conselice, Christopher J., Penny, Samantha, Janz, Joachim, Gallagher, John S., Kotulla, Ralf and McCormac, James (2017) A population of faint low surface brightness galaxies in the Perseus cluster core. Monthly Notices of the Royal Astronomical Society, 470 (2). pp. 1512-1525. ISSN 1365-2966 galaxies: dwarf galaxies: clusters: individual: Perseus galaxies: photometry galaxies: fundamental parameters galaxies: evolution https://academic.oup.com/mnras/article/doi/10.1093/mnras/stx1229/3837816/A-population-of-faint-low-surface-brightness doi:10.1093/mnras/stx1229 doi:10.1093/mnras/stx1229 |
| spellingShingle | galaxies: dwarf galaxies: clusters: individual: Perseus galaxies: photometry galaxies: fundamental parameters galaxies: evolution Wittmann, Carolin Lisker, Thorsten Ambachew Tilahun, Liyualem Grebel, Eva K. Conselice, Christopher J. Penny, Samantha Janz, Joachim Gallagher, John S. Kotulla, Ralf McCormac, James A population of faint low surface brightness galaxies in the Perseus cluster core |
| title | A population of faint low surface brightness galaxies in the Perseus cluster core |
| title_full | A population of faint low surface brightness galaxies in the Perseus cluster core |
| title_fullStr | A population of faint low surface brightness galaxies in the Perseus cluster core |
| title_full_unstemmed | A population of faint low surface brightness galaxies in the Perseus cluster core |
| title_short | A population of faint low surface brightness galaxies in the Perseus cluster core |
| title_sort | population of faint low surface brightness galaxies in the perseus cluster core |
| topic | galaxies: dwarf galaxies: clusters: individual: Perseus galaxies: photometry galaxies: fundamental parameters galaxies: evolution |
| url | https://eprints.nottingham.ac.uk/43610/ https://eprints.nottingham.ac.uk/43610/ https://eprints.nottingham.ac.uk/43610/ |