Journal article
The Halo Stars in NGC 5128. II. An Outer Halo Field and a New Metallicity Distribution
Abstract
We present new Hubble Space Telescope WFPC2 (V, I) photometry for stars in NGC 5128 at a projected distance more than 30 kpc from the galaxy center. The color-magnitude diagram shows an old red-giant branch which is extremely broad in color, identical in its characteristics with our previously observed 20 kpc halo field (Harris et al.). To derive the metallicity distribution function (MDF) from the red giant color distribution, we use an …
Authors
Harris GLH; Harris WE
Journal
The Astronomical Journal, Vol. 120, No. 5, pp. 2423–2436
Publisher
American Astronomical Society
Publication Date
November 2000
DOI
10.1086/316835
ISSN
0004-6256