Stellar archaeology in the M31 halo: variable stars and stellar populations in the And XIX dwarf spheroidal galaxy.
Abstract
We present results on the study of the Andromeda XIX (And XIX) dwarf spheroidal companion of M31, based on time-series photometry obtained with the Large Binocular Telescope (LBT). The LBT-based CMD of And XIX reaches V ∼ 26.5 mag. We have identified 35 variables in the galaxy, they include 24 RR Lyrae stars, 8 Anomalous Cepheids, 2 binaries, and 1 SX-Phoenicis candidate.
- Publication:
-
Memorie della Societa Astronomica Italiana
- Pub Date:
- 2015
- Bibcode:
- 2015MmSAI..86..338G
- Keywords:
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- Galaxies: dwarf;
- Local Group;
- Galaxies: individual (AndXIX);
- stars: distances;
- stars:variables: other;
- techniques photometric