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| Paper: |
Near-Infrared photometry of the LMC cluster Reticulum |
| Volume: |
310, Variable Stars in the Local Group (IAU Colloquium 193) |
| Page: |
189 |
| Authors: |
Dall'Ora, M.; Bono, G.; Storm, J.; Ripepi, V.; Testa, V.; Andreuzzi, G.; Buonanno, R.; Caputo, F.; Castellani, V.; Corsi, C.E.; Degl'Innocenti, S.; Marconi, G.; Marconi, M.; Monelli, M. |
| Abstract: |
We present U, B, V, I (SUSI@NTT) and J, Ks (SOFI@NTT) photometry of the Large Magellanic Cloud (LMC) cluster Reticulum. The observing strategy and data reduction (DAOPHOTII/ALLFRAME) allowed us to reach an accuracy of the order of 0.01 − 0.03 mag in all the bands at limiting magnitudes typical of RR Lyrae stars. Reticulum hosts a sizable sample of RR Lyrae stars (32), and we supply an accurate distance estimate using the RR Lyrae K-band Period-Luminosity-Metallicity (PLZK) relation. This method presents several advantages when compared with the MV vs [Fe/H] relation, since it is only marginally affected by off-ZAHB evolutionary effects and reddening corrections. |
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