Bibcode
DOI
Gallart, Carme; Zoccali, Manuela; Bertelli, Gianpaolo; Chiosi, Cesare; Demarque, Pierre; Girardi, Leo; Nasi, Emma; Woo, Jong-Hak; Yi, Sukyoung
Bibliographical reference
The Astronomical Journal, Volume 125, Issue 2, pp. 742-753.
Advertised on:
2
2003
Citations
57
Refereed citations
54
Description
This is the first of a series of three papers devoted to the calibration
of a few parameters of crucial importance in the modeling of the
evolution of intermediate-mass stars, giving special attention to the
amount of convective core overshoot. To this end we acquired deep V and
R photometry for three globular clusters of the Large Magellanic Cloud,
namely, NGC 2173, SL 556, and NGC 2155, in the age interval 1-3 Gyr. In
this first paper, we describe the aim of the project and Very Large
Telescope observations and data reduction and we make preliminary
comparisons of the color-magnitude diagrams with both the Padova and
Yonsei-Yale isochrones. Two following papers in this series present the
results of a detailed analysis of these data, independently carried out
by members of the Yale and Padova stellar evolution groups. This allows
us to compare both sets of models and discuss their main differences, as
well as the systematic effects that they would have on the determination
of the ages and metallicities of intermediate-age single-stellar
populations.
Based on observations collected at the European Southern Observatory,
Paranal, Chile (ESO 64.L-0385).