Other
Scientific paper
Jul 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990aj....100..102d&link_type=abstract
Astronomical Journal (ISSN 0004-6256), vol. 100, July 1990, p. 102-107.
Other
28
Halos, Red Giant Stars, Spiral Galaxies, Stellar Luminosity, Brightness Distribution, Charge Coupled Devices, Color-Magnitude Diagram
Scientific paper
The 3.6 m Canada-France-Hawaii Telescope has been used to obtain dep V and I CCD images of a field in the halo of NGC 253. A larger number of stellar objects, far in excess of that expected from background galaxies and foreground stars, have been detected fainter than I = 22.5 and V = 24.0, and these are identified as bright giants in the halo of NGC 253. The luminosities of the brightest objects in the field are similar to those of asymptotic giant branch stars in Galactic globular clusters. If these luminous stars are assumed to be similar to the brightest giants in the outer halo of M31, then the distance modulus of NGC 253 is equal to or less than 26.8. This is slightly lower than the canonical value derived from other distance indicators.
Davidge Tim J.
Pritchet Chris J.
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