The globular cluster system of NGC 5813.

Details The globular cluster system of NGC 5813. The globular cluster system of NGC 5813.

Apr 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995a%26a...296..633h&link_type=abstract

Astronomy and Astrophysics, v.296, p.633

Astronomy and Astrophysics

Astrophysics

6

Galaxies: Ngc 5813 Galaxies: Elliptical, Galaxies: Halos, Galaxies: Star Clusters

Scientific paper

We present a deep three colour study of the globular cluster system of the elliptical galaxy NGC 5813. CCD frames in B, V, and R were used to search for globular cluster candidates within the radial range from 40 to 310arcsec. Candidates were detected out to a distance of 190arcsec. The radial density profile of the cluster distribution follows a de Vaucouleurs law with a larger effective radius and a shallower gradient than found for the unresolved population of field stars. The total number of clusters is 1650+/-400 which corresponds to a specific globular cluster frequency of S=5.7+/-1.8. The mean colours of the cluster system are (B-V)=+0.74mag and (V-R)=+0.54mag. The B-V colour does not change with radius within our detection limits while we found a significant radial change in V-R of -0.1mag from the inner to the outer regions.

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