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1999MNRAS.304..633B - Mon. Not. R. Astron. Soc., 304, 633-653 (1999/April-2)
The Sagittarius dwarf galaxy survey (SDGS) - I. Colour-magnitude diagrams, reddening and population gradients. First evidence of a very metal-poor population.
BELLAZZINI M., FERRARO F.R. and BUONANNO R.
Abstract (from CDS):
The main new results presented in this paper are: (1) the possible discovery of a strong asymmetry in the distribution of stars along the major axis, since the north-western arm of the Sgr galaxy (i.e. the region nearer to the Galactic bulge) apparently shows a significant deficiency of Sgr stars and (2) the first direct detection of a very metal-poor (and presumably old) population in the Sgr stellar content. Hints at a metallicity gradient towards the densest region of the galaxy are also reported.
Abstract Copyright: 1999, Royal Astronomical Society
Journal keyword(s): astronomical data bases: miscellaneous - galaxies: individual: Sgr dSph - Local Group - galaxies: photometry - galaxies: stellar content
Simbad objects: 8
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