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http://hdl.handle.net/20.500.12386/28573
Title: | An ultra diffuse galaxy in the NGC 5846 group from the VEGAS survey | Authors: | Forbes, Duncan A. Gannon, Jonah Couch, Warrick J. IODICE, ENRICHETTA SPAVONE, MARILENA CANTIELLO, Michele NAPOLITANO, NICOLA ROSARIO SCHIPANI, Pietro |
Issue Date: | 2019 | Journal: | ASTRONOMY & ASTROPHYSICS | Number: | 626 | First Page: | A66 | Abstract: | Context. Many ultra diffuse galaxies (UDGs) have now been identified in clusters of galaxies. However, the number of nearby UDGs suitable for detailed follow-up remain rare. <BR /> Aims: Our aim is to begin to identify UDGs in the environments of nearby bright early-type galaxies from the VEGAS survey. <BR /> Methods: Here we use a deep g band image of the NGC 5846 group, taken as part of the VEGAS survey, to search for UDGs. <BR /> Results: We found one object with properties of a UDG if it associated with the NGC 5846 group, which seems likely. The galaxy, we name NGC 5846_UDG1, has an absolute magnitude of M<SUB>g</SUB> = -14.2, corresponding to a stellar mass of ∼10<SUP>8</SUP>M<SUB>☉</SUB>. It also reveals a system of compact sources which are likely globular clusters. Based on the number of globular clusters detected we estimate a halo mass that is greater than 8 × 10<SUP>10</SUP>M<SUB>☉</SUB> for UDG1. | URI: | http://hdl.handle.net/20.500.12386/28573 | URL: | https://www.aanda.org/articles/aa/abs/2019/06/aa35499-19/aa35499-19.html | ISSN: | 0004-6361 | DOI: | 10.1051/0004-6361/201935499 | Bibcode ADS: | 2019A&A...626A..66F | Fulltext: | open |
Appears in Collections: | 1.01 Articoli in rivista |
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