Magellanic Clouds stellar clusters.: II.: New B, V CM diagrams for 6 LMC and 10 SMC clusters

被引：20

作者：

Matteucci, A

Ripepi, V

Brocato, E ^{[2
]}

Castellani, V

机构：

[1] Osserv Astron Capodimonte, I-80131 Naples, Italy

[2] Osservatorio Astron Collurania, I-64100 Teramo, Italy

[3] Univ Pisa, Dipartimento Fis, I-56100 Pisa, Italy

来源：

ASTRONOMY & ASTROPHYSICS | 2002年 / 387卷 / 03期

关键词：

galaxies : clusters : general; galaxies : stellar content; galaxies : Magellic Clouds;

D O I：

10.1051/0004-6361:20020376

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present new CCD photometry for 6 LMC and 10 SMC stellar clusters taken at the ESO 1.54-m Danish Telescope in La Silla, to extend a previous investigation on Magellanic Clouds clusters based on HST snapshots. Thanks to the much larger area covered by the Danish detector, we investigate the spatial distribution of cluster stars, giving V, (B V) CM diagrams for both clusters and surrounding fields. Evidence of a complex history of star formation in the Clouds is outlined, showing that old field populations in both Clouds have metallicities much lower than normally adopted for them (Z = 0.008 and Z = 0.004 for LMC and SMC respectively), with SMC field stars more metal poor than in the LMC. Observational data concerning the red clump of field stars in both Clouds are briefly discussed.

引用

页码：861 / 889

页数：29