IC 1257:A New Globular Cluster in the Galactic Halo

Details IC 1257:A New Globular Cluster in the Galactic Halo IC 1257:A New Globular Cluster in the Galactic Halo

Feb 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aj....113..688h&link_type=abstract

Astronomical Journal v.113, p. 688-691 (1997)

Astronomy and Astrophysics

Astronomy

11

Scientific paper

New CCD photometry of the faint, compact star cluster IC 1257 (l=17(o,) b=+15(o) ), obtained with the Palomar 5m telescope, reveals that it is a highly reddened globular cluster well beyond the Galactic center. With an apparent distance modulus (m-M)_V = 19.2 and a foreground reddening E(B-V) = 0.75, it is 24 kpc from the Sun and ~ 16 kpc beyond the Galactic center. The morphology of its color-magnitude diagram is similar to that of M13, and suggests that it has moderately low metallicity ([Fe/H] =~ -1.7).
The Palomar 5m telescope is operated in a joint agreement among the California Institute of Technology, the Jet Propulsion Laboratory, and Cornell University.

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