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Near-Infrared photometry of the LMC cluster Reticulum

Published online by Cambridge University Press:  12 April 2016

M. Dall’Ora ,
G. Bono ,
J. Storm ,
V. Ripepi ,
V. Testa ,
G. Andreuzzi ,
R. Buonanno ,
F. Caputo ,
V. Castellani  and
C.E. Corsi
...Show all authors
M. Dall’Ora
Affiliation:
Dipartimento di Fisica, Università di Roma Tor Vergata, Via della Ricerca Scientifica, 1, 00133 Rome, Italy INAF-OAR, via Frascati 33, 00040 Monteporzio Catone, Italy
G. Bono
Affiliation:
INAF-OAR, via Frascati 33, 00040 Monteporzio Catone, Italy
J. Storm
Affiliation:
Astrophysikalisches Institut Potsdam, An der Sternwarte 16, D-14482 Potsdam, Germany
V. Ripepi
Affiliation:
INAF, Osservatorio Astronomico di Capodimonte, via Moiariello 16, 80131 Napoli, Italy
V. Testa
Affiliation:
INAF-OAR, via Frascati 33, 00040 Monteporzio Catone, Italy
G. Andreuzzi
Affiliation:
INAF-OAR, via Frascati 33, 00040 Monteporzio Catone, Italy
R. Buonanno
Affiliation:
Dipartimento di Fisica, Università di Roma Tor Vergata, Via della Ricerca Scientifica, 1, 00133 Rome, Italy INAF-OAR, via Frascati 33, 00040 Monteporzio Catone, Italy
F. Caputo
Affiliation:
INAF-OAR, via Frascati 33, 00040 Monteporzio Catone, Italy
V. Castellani
Affiliation:
INAF-OAR, via Frascati 33, 00040 Monteporzio Catone, Italy INFN, Sezione di Pisa, via Livornese 582/A, S. Piero a Grado, 56010, Pisa, Italy
C.E. Corsi
Affiliation:
INAF-OAR, via Frascati 33, 00040 Monteporzio Catone, Italy
S. Degl’Innocenti
Affiliation:
Dipartimento di Fisica, Università di Pisa, piazza Torricelli 2, 56126 Pisa, Italy
G. Marconi
Affiliation:
INAF-OAR, via Frascati 33, 00040 Monteporzio Catone, Italy European Southern Observatory, Alonso de Cordova 3107, Casilla 19001, Vitacura, Santiago 19, Chile
M. Marconi
Affiliation:
INAF, Osservatorio Astronomico di Capodimonte, via Moiariello 16, 80131 Napoli, Italy
M. Monelli
Affiliation:
Dipartimento di Fisica, Università di Roma Tor Vergata, Via della Ricerca Scientifica, 1, 00133 Rome, Italy INAF-OAR, via Frascati 33, 00040 Monteporzio Catone, Italy

Abstract

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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.

Type
Part 3. Variable stars as tracers of different stellar populations – galactic and globular clusters, LMC/SMC and Local Group galaxies
Information
International Astronomical Union Colloquium , Volume 193: Variable Stars in the Local Group , 2004 , pp. 189 - 192
Copyright
Copyright © Astronomical Society of the Pacific 2004

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