V,I PHOTOMETRY OF THE BULGE METAL-RICH GLOBULAR-CLUSTERS NGC-6380 ANDTERZAN-12

Citation
S. Ortolani et al., V,I PHOTOMETRY OF THE BULGE METAL-RICH GLOBULAR-CLUSTERS NGC-6380 ANDTERZAN-12, Astronomy & Astrophysics. Supplement series, 127(3), 1998, pp. 471-477
Citations number
30
Categorie Soggetti
Astronomy & Astrophysics
ISSN journal
03650138
Volume
127
Issue
3
Year of publication
1998
Pages
471 - 477
Database
ISI
SICI code
0365-0138(1998)127:3<471:VPOTBM>2.0.ZU;2-Y
Abstract
We present V, I photometry of the bulge globular clusters NGC 6380 and Terzan 12, using the ESO NTT telescope. For the first time colour-mag nitude diagrams are obtained for these clusters, allowing us to derive reliable cluster parameters. From the colour-magnitude diagram morpho logy both clusters result to be metal-rich. For NGC 6380 we estimate [ Fe/H] approximate to -0.5, a reddening of E(B - V) = 1.07 and a distan ce d. = 9.8 kpc. For Terzan 12 we obtain [Fe/H] approximate to -0.5; E (B - V) = 2.06 and d. approximate to 3.4 kpc.