The resolution of old red giant stars in the Sculptor group of galaxies

Abstract

view Abstract Citations (46) References (16) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS The resolution of old red giant stars in the Sculptor group of galaxies. Graham, J. A. Abstract Photographs are reproduced showing the resolution of the old red giant stars in the galaxies NGC 55 and NGC 300 which belong to the nearby Sculptor group of galaxies. The red magnitude of these stars is estimated to be 22.0 + or - 0.3 mag which corresponds to a visual magnitude of 23.0 mag. A comparison with NGC 205, a companion galaxy of M31, suggests an upper limit of 1.9 Mpc (modulus 26.4 mag) for the distances to NGC 55 and NGC 300. A similar degree of resolution is not seen in NGC 253 which is probably a more distant object. It is concluded that, like the members of the Local Group, the Sculptor galaxies are distributed over a large volume of space with NGC 55 and NGC 300 on the near side of the loose aggregate. Publication: The Astrophysical Journal Pub Date: January 1982 DOI: 10.1086/159575 Bibcode: 1982ApJ...252..474G Keywords: Astronomical Photography; Galactic Clusters; Image Resolution; Late Stars; Red Giant Stars; Stellar Magnitude; Galactic Evolution; Galactic Structure; Spatial Distribution; Stellar Evolution; Astrophysics full text sources ADS | data products SIMBAD (4) NED (3)