NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-06-25 T16:57:24 PDT
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For refcode 2010MNRAS.403..429F:
Retrieve 145 NED objects in this reference.
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NED Abstract

Copyright by Royal Astronomical Society. 2010MNRAS.403..429F A blue tilt in the globular cluster system of the Milky Way-like galaxy NGC 5170 Forbes, Duncan A.; Spitler, Lee R.; Harris, W. E.; Bailin, Jeremy; Strader, Jay; Brodie, Jean P.; Larsen, S. S. Abstract. ABSTRACT Here, we present Hubble Space Telescope/Advanced Camera for Surveys (ACS) imaging, in the B and I bands, of the edge-on Sb/Sc galaxy NGC 5170. Excluding the central disc region, we detect 142 objects with colours and sizes typical of globular clusters (GCs). Our main result is the discovery of a 'blue tilt' (a mass-metallicity relation), at the 3{sigma} level, in the metal-poor GC subpopulation of this Milky Way like galaxy. The tilt is consistent with that seen in massive elliptical galaxies and with the self-enrichment model of Bailin & Harris. For a linear mass-metallicity relation, the tilt has the form Z ~ L^0.42+/-0.13^. We derive a total GC system population of 600 +/- 100, making it much richer than the Milky Way. However, when this number is normalized by the host galaxy luminosity or stellar mass it is similar to that of M31. Finally, we report the presence of a potential Ultra Compact Dwarf of size ~6 pc and luminosity M_I_ ~ -12.5, assuming it is physically associated with NGC 5170. Key words: globular clusters: general, galaxies: individual: NGC 5170, galaxies: star clusters
Retrieve 145 NED objects in this reference.
Please click here for ADS abstract

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