Deep infrared array photometry of galactic globular clusters: the main sequence of NGC 6171.

Details Deep infrared array photometry of galactic globular clusters: the main sequence of NGC 6171. Deep infrared array photometry of galactic globular clusters: the main sequence of NGC 6171.

Jun 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995a%26a...298..461f&link_type=abstract

Astronomy and Astrophysics, v.298, p.461

Astronomy and Astrophysics

Astrophysics

5

Cluster: Globular: Ngc 6171, Techniques: Photometric, Stars: Population Ii, Hr Diagram, Infrared: Stars

Scientific paper

Deep J,K IR-array photometry for individual Main Sequence stars in NGC 6171 reaching K~18, about two magnitudes below the Turnoff, is presented. A first comparison with the theoretical isochrones computed by Bergbusch & VandenBerg (1992) and transformed onto the near-IR plane by Bell (1992) shows that, after imposing a proper matching at the level of the giant branch, the models yield an adequate fit to the overall morphology of the available Colour Magnitude Diagrams. As already found by Davidge & Simons (1994) in M4, the offset one has to apply to the model colors (V-J), (V-K) is however quite large (~0.1mag).

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