The NGC 2419 project: preliminary results on stellar variability
Abstract
We have combined B, V, I time-series photometry from three different telescopes (SUBARU, TNG and HST) to study the variable star population of the remote Galactic globular cluster NGC 2419 and derive hints on a possible extragalactic origin for this cluster. We have discovered 40 new variables (34 RR Lyrae stars, 3 SX Phoenicis stars, Scuti 1 eclipsing binary system and 2 red irregular variables) doubling the number of known variable stars in NGC 2419.
- Publication:
-
Stellar Populations as Building Blocks of Galaxies
- Pub Date:
- August 2007
- DOI:
- 10.1017/S1743921307008034
- Bibcode:
- 2007IAUS..241..243D
- Keywords:
-
- (Galaxy:) globular clusters: individual (NGC 2419);
- stars: variables: other