Astron. Astrophys. Suppl. Ser. 132, 333-340

Terzan 3 and IC 1276 (Palomar 7): Two metal-rich bulge globular clusters uncovered

B. Barbuy¹ - S. Ortolani² - E. Bica³

Send offprint request: B. Barbuy

1 - Universidade de São Paulo, C.P. 3386, São Paulo 01060-970, Brazil
2 - Università di Padova, Dept. di Astronomia, Vicolo dell'Osservatorio 5, I-35122 Padova, Italy
3 - Universidade Federal do Rio Grande do Sul, Dept. de Astronomia, C.P. 15051, Porto Alegre 91500-970, Brazil

Received March 30; accepted April 27, 1998

Abstract:

Colour magnitude diagrams of Terzan 3 and IC 1276 are presented for the first time. The morphology of the horizontal and red giant branches indicates that they are metal rich ([Fe/H] $\approx -0.7$). They are considerably reddened, with E(B-V) = 0.72 (Terzan 3) and E(B-V) = 1.16 (IC 1276). Terzan 3 is located at a distance from the Sun $d_{\odot}$ $\approx$ 6.5 kpc, and IC 1276 at $d_{\odot}$ $\approx$ 4.0 kpc. Both clusters are in the Galactic Bulge. The photometries attain the main sequence turnoff regions, and a discussion of ages is given as compared to other bulge and halo globular clusters.

Key words: galaxies: globular clusters: Terzan 3; IC 1276 -- HR diagram