NGC 6256, a galactic globular cluster

Details NGC 6256, a galactic globular cluster NGC 6256, a galactic globular cluster

Jul 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983a%26as...53...47a&link_type=abstract

Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 53, July 1983, p. 47-55.

Astronomy and Astrophysics

Astrophysics

5

Astronomical Photometry, Globular Clusters, Hertzsprung-Russell Diagram, Color-Magnitude Diagram, Horizontal Branch Stars, Milky Way Galaxy, Stellar Color, Stellar Luminosity, Stellar Magnitude

Scientific paper

Evidence implying that NGC 6256 is a globular cluster is adduced from the construction of a provisional color-magnitude diagram (CMD) of 182 stars in the V = 13.7-18.8 and B = 14.5-20.0 ranges. The cluster, which is located in a dense stellar field at low galactic latitude, has a CMD that in addition to exhibiting a flattened giant branch suggests the presence of the red horizontal branch stars typical of metal-rich clusters. The adopted horizontal branch luminosity at V(HB) of about 18.2, together with the estimated reddening E(B-V) of 0.80, place the object at 11.0 kpc from the sun, 0.6 kpc from the galactic plane, and 2.9 kpc from the galactic center.

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