NGC 6749: a metal-poor halo globular cluster in a disc field rich in Mira variables
Author(s) -
L. Rosino,
S. Ortolani,
B. Barbuy,
E. Bica
Publication year - 1997
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-8711
pISSN - 0035-8711
DOI - 10.1093/mnras/289.3.745
Subject(s) - globular cluster , physics , astrophysics , horizontal branch , galactic plane , galactic halo , bulge , astronomy , blue straggler , photometry (optics) , halo , cluster (spacecraft) , star cluster , stars , galaxy , computer science , programming language
We present V, I photometry of the loose star cluster NGC 6749, and for the first time colour-magnitude diagrams are provided. We confirm that it is a globular cluster and its blue horizontal branch indicates that it is metal-poor. We derive a reddening of E(B— V) = 1.39± 0.04 and a distance from the Sun d⊙ = 7.3 ± 0.9 kpc (assuming a total-to-selective absorption R = 3.4). The cluster is projected...
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