On the universality of initial mass function of open star clusters.
Abstract
The luminosity functions of 23 open star clusters of age less than 1 Gyr are determined by the method of star counts on astronegatives obtained with the Schmidt telescope at the Radioastrophysical Observatory of the Academy of Sciences of the Latvian SSR. The differential and integral luminosity functions are then used to calculate the initial luminosity (mass) functions, and the results are presented in tables. It is concluded that, for time intervals up to 1 Gyr and distances up to 2 kpc, the process of star formation leads to identical mass distributions in different protoclouds, confirming the hypothesis that the open-cluster zero-age luminosity function is universally valid.
- Publication:
-
Astronomische Nachrichten
- Pub Date:
- 1989
- DOI:
- 10.1002/asna.2113100207
- Bibcode:
- 1989AN....310..127Z
- Keywords:
-
- Astronomical Photometry;
- Open Clusters;
- Stellar Luminosity;
- Stellar Mass;
- Astrophysics