Stellar photometric stability. II. Ages and distances for 13 open clusters with time series observations.
Abstract
Distances, reddenings, and ages have been determined for 13 southern open clusters using data from CCD observations. It is shown that the photometry will become an extremely efficient and accurate technique for collecting data on clusters. The potential use of the photometry data for studies of the H-R diagram, especially the structure of the main sequence, is examined. Evidence is found for some gaps in the main sequence, and it is argued that these gaps are statistically significant. The mass functions for stars with masses of 1-6 solar are determined.
- Publication:
-
Astronomy and Astrophysics Supplement Series
- Pub Date:
- January 1991
- Bibcode:
- 1991A&AS...87..119K
- Keywords:
-
- Astronomical Photometry;
- Galactic Structure;
- Open Clusters;
- Stellar Evolution;
- Ccd Star Tracker;
- Color-Magnitude Diagram;
- Imaging Techniques;
- Main Sequence Stars;
- Ubv Spectra;
- Astrophysics