IC-1257 - A NEW GLOBULAR-CLUSTER IN THE GALACTIC HALO

Citation
We. Harris et al., IC-1257 - A NEW GLOBULAR-CLUSTER IN THE GALACTIC HALO, The Astronomical journal, 113(2), 1997, pp. 688-691
Citations number
24
Categorie Soggetti
Astronomy & Astrophysics
Journal title
ISSN journal
00046256
Volume
113
Issue
2
Year of publication
1997
Pages
688 - 691
Database
ISI
SICI code
0004-6256(1997)113:2<688:I-ANGI>2.0.ZU;2-U
Abstract
New CCD photometry of the faint, compact star cluster IC 1257 (l = 17 degrees, b = +15 degrees), obtained with the Palomar 5 m telescope,(1) 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 similar to 16 kpc beyond the Galactic center. The morphology of it s color-magnitude diagram is similar to that of M13, and suggests that it has moderately low metallicity ([Fe/H] similar or equal to -1.7). (C) 1997 American Astronomical Society.