The OGLE Collection of Variable Stars

Over 45 000 RR Lyrae Stars in the Magellanic System

I. Soszyński, A. Udalski, M. K. Szymański, Ł. Wyrzykowski, K. Ulaczyk, R. Poleski, P. Pietrukowicz, S. Kozłowski, D. Skowron, J. Skowron, P. Mróz, M. Pawlak
Acta Astronomica, 66, 131 (arXiv:1606.02727)

We present the largest collection of RR Lyrae stars in the Magellanic System and in its foreground. The sample consists of 45 451 RR Lyr stars, of which 39 082 were detected toward the Large Magellanic Cloud and 6 369 toward the Small Magellanic Cloud. We provide long-term time-series photometric measurements collected during the fourth phase of the Optical Gravitational Lensing Experiment (OGLE-IV).

Spatial distribution of RR Lyrae stars in the Magellanic Clouds

We discuss several potential astrophysical applications of our collection: investigation of the structure of the Magellanic Clouds and the Galactic halo, studies of the globular clusters in the Magellanic System, analysis of double-mode RR Lyr stars, and searching for RR Lyr stars in eclipsing binary systems.

Light curves of RR Lyrae stars showing eclipsing variability

PLEASE cite the following paper when using the data or referring to these OGLE results:
Soszyński et al., 2016, Acta Astronomica, 66, 131 (arXiv:1606.02727)

Any comments about the data and the form of their presentation are welcome as they can improve the future releases of OGLE analysis. Send your messages to this address.