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A&A Supplement series, Vol. 122, May I 1997, 483-488

Received June 28; accepted August 21, 1996

NTT V, I, z photometry of the metal-rich bulge globular cluster Terzan 6

B. Barbuytex2html_wrap1005, S. Ortolani tex2html_wrap1007, - E. Bicatex2html_wrap1009

tex2html_wrap1011  Universidade de São Paulo, CP 9638, São Paulo 01065-970, Brazil
tex2html_wrap1013  Università di Padova, Dept. di Astronomia, Vicolo dell'Osservatorio 5, I-35123 Padova, Italy
tex2html_wrap1015  Universidade Federal do Rio Grande do Sul, Dept. de Astronomia, CP 15051, Porto Alegre 91500-970, Brazil


We present for the first time optical (V, I and Gunn z) colour magnitude diagrams for Terzan 6, which were collected under excellent seeing conditions with the ESO NTT telescope. The horizontal branch morphology is red, nearly superimposed on the red giant branch. The red giant branch morphology presents characteristics intermediate between those of 47 Tuc and NGC 6528/NGC 6553.

We derive a reddening of E(B-V) = 2.24 and a distance tex2html_wrap_inline993 kpc (assuming R = 3.1). We conclude that Terzan 6 belongs to the metal-rich bulge globular cluster system.

keywords: globular clusters: Terzan 6; general -- HR diagram

Copyright by the European Southern Observatory (ESO)