Multiwavelength Time Series Data of the LMC Cluster Reticulum
Abstract
We present accurate multiwavelength UBVI time series data of the LMC cluster Reticulum. Data cover a time interval of ~ 6 yr and have been collected with SUSI1/2 and SOFI at NTT/ESO. For each band we collected approximately 30 short/long exposures and the total exposure times range from roughly 3500 (U, B), 6000s (V) to 8300s (I). The observing strategy and data reduction (DAOPHOTII/ALLFRAME) allowed us to reach a photometry accuracy of 0.02 magnitude from the tip of the Red Giant Branch well below the Turn-Off region. Even though this cluster presents a very low central density, we found a sizable sample of Blue Stragglers (BSs). We also selected stars with a variability index larger than 2, and interestingly enough we detected together with the RR Lyrae stars a large sample of variable stars around and below the TO region. Preliminary analysis on the luminosity variation indicate that these objects might be binary stars.
Cite
@article{arxiv.astro-ph/0210650,
title = {Multiwavelength Time Series Data of the LMC Cluster Reticulum},
author = {M. Monelli and G. Andreuzzi and G. Bono and R. Buonanno and F. Caputo and M. Castellani and V. Castellani and C. E. Corsi and M. Dall' Ora and G. Marconi and L. Pulone and V. Ripepi and J. Storm and V. Testa},
journal= {arXiv preprint arXiv:astro-ph/0210650},
year = {2007}
}
Comments
2 pages, 1 figure, uses newpasp.sty, to be published in ``New Horizons in Globular Cluster Astronomy'', ASP Conference Series, 2002; Eds.: G. Piotto, G. Meylan, G. Djorgowski and M. Riello