White dwarfs and blue stragglers in the open clusters, an analysis of the population at the base of a search in the ultraviolet wavelengths
Abstract
Bright white dwarfs and blue stragglers are among the brightest objects in the old open clusters and globular clusters when one observes in the ultraviolet range of a spectrum. Consequently, the Spectr-UV mission allows to detect these stars effectively and determine the general properties of their populations in the clusters. The space distribution and the fraction of white dwarfs and blue stragglers among the probable cluster members are of essential interest. The number of the white dwarf stars can inform us about the number of stars with masses up to approximately 10 solar masses which were born in the cluster. This, in turn, is influential for a construction of the initial mass function. The number of the blue straggler stars gives an information on the binary systems with an intensive mass exchange in the past. We propose the list of open clusters, where Spectr-UV can be used to search white dwarfs and blue stragglers. This paper is based on a talk presented at "Ultraviolet Universe — 2023" conference.
- Publication:
-
INASAN Science Reports
- Pub Date:
- December 2023
- DOI:
- 10.51194/INASAN.2023.8.5.007
- Bibcode:
- 2023INASR...8..241S
- Keywords:
-
- open star clusters;
- white dwarfs;
- blue stragglers