Other
Scientific paper
Jan 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002ycat..73271116l&link_type=abstract
VizieR On-line Data Catalog: J/MNRAS/327/1116. Originally published in: 2001MNRAS.327.1116L
Other
Clusters: Globular, Photometry
Scientific paper
We explore the rich globular cluster (GC) system of the nearby Sa galaxy M104, the "Sombrero" (NGC 4594), using archive Wide Field Planetary Camera 2 data. The GC colour distribution is found to be bimodal at the >99 per cent confidence level, with peaks at (V-I)0=0.96+/-0.03 and 1,21+/-0.03. The inferred metallicities are very similar to those of GCs in our Galaxy and M31. However, the Sombrero reveals a much enhanced number of red (metal-rich) GCs compared to other well-studied spirals. Because the Sombrero is dominated by a huge bulge and only has a modest disc, we associate the two subpopulations with the halo and bulge components, respectively. Thus our analysis supports the view that the metal-rich GCs in spirals are associated with the bulge rather than with the disc. The Sombrero GCs have typical effective (half-light) radii of ~2pc with the red ones being ~30 per cent smaller than the blue ones. We identify many similarities between the GC system of the Sombrero and those of both late-type spirals and early-type galaxies. Thus both the GC system and the Hubble type of the Sombrero galaxy appear to be intermediate in their nature.
(1 data file).
Brodie Jean P.
Forbes Duncan A.
Larsen Soeren S.
No associations
LandOfFree
VI photometry of Sombrero globular clusters (Larsen+, 2001) does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with VI photometry of Sombrero globular clusters (Larsen+, 2001), we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and VI photometry of Sombrero globular clusters (Larsen+, 2001) will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1690666