Star Counts in the Globular Cluster M71
Abstract
Star counts were carried out on V CCD frames of the globular cluster M71. A systematic radial variation in the main-sequence luminosity function of the cluster is observed, clearly demonstrating that mass segregation is operative in the cluster. The mass segregation predicted by an isotropic multimass King model is shown to be in good agreement with the present observations. The observations are consistent with those expected from a cluster undergoing dynamical relaxation.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- April 1989
- DOI:
- 10.1086/167286
- Bibcode:
- 1989ApJ...339..178R
- Keywords:
-
- Astronomical Photometry;
- Globular Clusters;
- Star Distribution;
- White Dwarf Stars;
- Charge Coupled Devices;
- Dark Matter;
- Luminosity;
- Mass To Light Ratios;
- Metallicity;
- Stellar Mass;
- Astrophysics;
- CLUSTERS: GLOBULAR;
- LUMINOSITY FUNCTION;
- STARS: STELLAR DYNAMICS;
- STARS: STELLAR STATISTICS