Bibcode
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.
Referencia bibliográfica
Variable Stars in the Local Group, IAU Colloquium 193, Proceedings of the conference held 6-11 July, 2003 at Christchurch, New Zealand. Edited by Donald W. Kurtz and Karen R. Pollard. ASP Conference Proceedings, Vol. 310. San Francisco: Astronomical Society of the Pacific, 2004., p.189
Fecha de publicación:
5
2004
Número de citas
0
Número de citas referidas
0
Descripción
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.