Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995apjs...96...39b&link_type=abstract
Astrophysical Journal Supplement Series (ISSN 0067-0049), vol. 96, no. 1, p. 39-116
Astronomy and Astrophysics
Astronomy
162
Astronomical Catalogs, Ring Galaxies, Sky Surveys (Astronomy), Southern Hemisphere, Statistical Analysis, Barred Galaxies, Gravitational Effects, Gravitational Lenses, Morphology
Scientific paper
The Catalog of Southern Ringed Galaxies (CSRG) is a comprehensive compilation of diameters, axis ratios, relative bar position angles, and morphologies of inner and outer rings, pseudorings, and lenses in 3692 galaxies south of declination -17 deg. The purpose of the catalog is to evaluate the idea that these ring phenomena are related to orbital resonances with a bar or oval in galaxy potentials. The catalog is based on visual inspection of most of the 606 fields of the Science Research Council (SRC) IIIa-J southern sky survey, with the ESO-B, ESO-R, and Palomar Sky surveys used as auxiliaries when needed for overexposed core regions. The catalog is most complete for SRC fields 1-303 (mostly south of declination -42 deg). In addition to ringed galaxies, a list of 859 mostly nonringed galaxies intended for comparison with other catalogs is provided. Other findings from the CSRG that are not based on statistics are the identification of intrinsic bar/ring misalignment; bars which underfill inner rings; dimpling of R'1 pseudorings; pointy, rectangular, or hexagonal inner or outer ring shapes; a peculiar polar-ring-related system; and other extreme examples of spiral structure and ring morphology.
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