Starbursts, Blue Stragglers, and Binary Stars in Local Superclusters and Groups. II. The Old Disk and Halo Populations
Abstract
A study of the distribution in the HR diagram of stars in several old-disk population aggregates and in several halo-population aggregates indicates that the blue straggler phenomenon is ubiquitous. In all the cases considered, several stars are found to lie far from the locus defined by a semiempirical isochrone that best fits the distribution of the bulk of the stars in the aggregate. The results support the starburst interpretation of blue stragglers in young-disk aggregates.
- Publication:
-
The Astronomical Journal
- Pub Date:
- February 1989
- DOI:
- 10.1086/114993
- Bibcode:
- 1989AJ.....97..431E
- Keywords:
-
- Blue Stars;
- Cepheid Variables;
- Eclipsing Binary Stars;
- Star Formation;
- Starburst Galaxies;
- Stellar Spectrophotometry;
- Main Sequence Stars;
- Open Clusters;
- Star Clusters;
- Star Distribution;
- Stellar Luminosity;
- Stellar Winds;
- Astrophysics;
- STARS: BINARIES;
- STARS: PROPER-MOTION