Wide-field variability survey of the globular cluster NGC 4833
Abstract
We present preliminary results of the variability survey in the field of the globular cluster NGC 4833. We observed all 34 variable stars known in the cluster. In addition, we have found two new SX Phoenicis stars, one new RR Lyrae star, twelve new eclipsing systems mostly of the W Ursae Majoris type, nine new variable red giants, and ten new field-stars showing irregular variations. Properties of RR Lyrae stars indicate that NGC 4833 is an Oosterhoff's type II globular cluster.
- Publication:
-
Precision Asteroseismology
- Pub Date:
- February 2014
- DOI:
- 10.1017/S1743921313014956
- arXiv:
- arXiv:1401.4822
- Bibcode:
- 2014IAUS..301..441K
- Keywords:
-
- Galaxy: globular clusters: individual: NGC 4833;
- stars: Population II;
- stars: variables: RR Lyrae;
- stars: variables: SX Phoenicis;
- Astrophysics - Astrophysics of Galaxies
- E-Print:
- poster presented at the IAU Symposium No. 301