A New Reservoir of Dwarf Galaxy Candidates in the Centaurus A Group. Issue Volume 14:Issue S344(2019) (August 2018)

• Record Type: Journal Article
• Authors: Taylor, Matthew A.; Eigenthaler, Paul; Puzia, Thomas H.; Muñoz, Roberto P.; Ribbeck, Karen X.; Zhang, Hong-Xin; Ordenes-Briceño, Yasna; Bovill, Mia Sauda
• Editors: McQuinn, Kristen B. W.; Stierwalt, Sabrina
• Is Part Of: Proceedings of the International Astronomical Union. Volume 14:Issue S344(2019)
• Page Start: 353
• Page End: 356
• Publication Date: 2018-08
• Subjects: galaxies: star clusters, -- galaxies: dwarf, -- galaxies: elliptical, -- galaxies: individual (NGC5128), -- galaxies: interactions; Astronomy -- Congresses; Astronomy -- Periodicals; 520
• DOI: 10.1017/S1743921318006634
• Languages: English
• ISSNs: 1743-9213

Abstract

Abstract: We have searched optical u′g′r′i′z′ imaging of 22 deg 2 centred on the nearby giant elliptical galaxy NGC 5128 for new dwarf galaxies in the Centaurus A group. We report 45 promising new candidates, which are broadly consistent with the properties of nearby dwarf spheroidal galaxies and extend the size-luminosity relation toward fainter total luminosities and smaller sizes for known dwarf galaxies outside the Local Group (LG). Altogether, these new results show NGC 5128 to be the host of a large reservoir of low-mass dwarf galaxies that is at least as rich as that of the LG and is ripe for detailed follow-up observations.