The globular cluster NGC 6652.
Abstract
We have carried out BVRI and Gunn z CCD photometry for the globular cluster NGC6652 which had no previous colour magnitude study. This cluster, which is projected close to the bulge minor axis at =~11deg from the center, has a CMD morphology suggesting a moderately high metallicity of [Fe/H] =~-0.9. The Horizontal Branch is red with the possibility of a few members in the RR Lyrae gap. The cluster appears to have several blue stragglers. We derive a reddening of E(B-V) = 0.10+/-0.02 and a distance of dsun_ = 9.3 Kpc. The turnoff is reached and we obtain {DELTA}V(TO-HB) = 3.35+/-0.16 suggesting that it is slightly younger than the average age of Galactic globular clusters.
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- June 1994
- Bibcode:
- 1994A&A...286..444O
- Keywords:
-
- Globular Clusters;
- Horizontal Branch Stars;
- Hydrogen;
- Iron;
- Metallicity;
- Astronomical Photometry;
- Blue Stars;
- Charge Coupled Devices;
- Color-Magnitude Diagram;
- Hertzsprung-Russell Diagram;
- Red Shift;
- Astronomy;
- GLOBULAR CLUSTERS: INDIVIDUAL: NGC 6652;
- HERTZSPRUNG-RUSSEL DIAGRAM