Online-Ressource | |
Verfasst von: | Wittmann, Carolin [VerfasserIn] |
Lisker, Thorsten [VerfasserIn] | |
Ambachew Tilahun, Liyualem [VerfasserIn] | |
Grebel, Eva K. [VerfasserIn] | |
Titel: | A population of faint low surface brightness galaxies in the Perseus cluster core |
Verf.angabe: | Carolin Wittmann, Thorsten Lisker, Liyualem Ambachew Tilahun, Eva K. Grebel, Christopher J. Conselice, Samantha Penny, Joachim Janz, John S. Gallagher, Ralf Kotulla and James McCormac |
E-Jahr: | 2017 |
Jahr: | 20 May 2017 |
Umfang: | 14 S. |
Fussnoten: | Gesehen am 13.09.2017 |
Titel Quelle: | Enthalten in: Royal Astronomical SocietyMonthly notices of the Royal Astronomical Society |
Ort Quelle: | Oxford : Oxford Univ. Press, 1827 |
Jahr Quelle: | 2017 |
Band/Heft Quelle: | 470(2017), 2, Seite 1512-1525 |
ISSN Quelle: | 1365-2966 |
Abstract: | 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 deg2, 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. |
DOI: | doi:10.1093/mnras/stx1229 |
URL: | Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt. kostenfrei: Volltext: http://dx.doi.org/10.1093/mnras/stx1229 |
kostenfrei: Volltext: https://academic.oup.com/mnras/article/470/2/1512/3837816/A-population-of-faint-low-surface-brightness | |
DOI: https://doi.org/10.1093/mnras/stx1229 | |
Datenträger: | Online-Ressource |
Sprache: | eng |
K10plus-PPN: | 1563470918 |
Verknüpfungen: | → Zeitschrift |