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|Title:||An ultra diffuse galaxy in the NGC 5846 group from the VEGAS survey||Authors:||Forbes, Duncan A.
Couch, Warrick J.
NAPOLITANO, NICOLA ROSARIO
|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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