Bibcode
Dall'Ora, M.; Ripepi, V.; Caputo, F.; Castellani, V.; Bono, G.; Brocato, E.; Buonanno, R.; Castellani, M.; Corsi, C. E.; Marconi, M.; Monelli, M.; Nonino, M.; Pulone, L.; Smith, H. A.; Walker, A. R.
Bibliographical reference
Memorie della Società Astronomica Italiana, v.74, p.894 (2003)
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2003
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Description
We present recent results on variable stars in the Carina Dwarf Galaxy
based on B,V time series data collected over three consecutive nights
with the Wide Field Imager available at the 2.2m ESO/MPI telescope.
At present we have already detected and measured a sample of 92 variable
stars. Among them 75 are RR Lyrae stars (54 fundamental, 15 first
overtone, and 6 suspected double-mode pulsators), while 15 are Anomalous
Cepheids. By adopting recent theoretical predictions we discuss
evolutionary and pulsation properties of these objects. Finally, we
estimate the Carina distance according to three different methods that
use RR Lyrae stars as distance indicators.
Based on Osservatorio di Capodimonte guaranteed time.