Disc galaxies and their environments - The relative populations of subclasses of ordinary and barred spiral galaxies in the various environments

Details Disc galaxies and their environments - The relative populations of subclasses of ordinary and barred spiral galaxies in the various environments Disc galaxies and their environments - The relative populations of subclasses of ordinary and barred spiral galaxies in the various environments

Nov 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986mnras.223..139k&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 223, Nov. 1, 1986, p. 139-150.

Other

5

Barred Galaxies, Disk Galaxies, Galactic Clusters, Spiral Galaxies, Galactic Evolution, Population Theory

Scientific paper

We have investigated the subclass populations of ordinary (SAs) and barred spiral galaxies (SBs) in the various environments (field, binary, and clusters of galaxies). Analysing galaxy samples taken from the Uppsala General Catalogue of Galaxies, we obtain the following results. First, the SAs show a well-known environmental difference - the fractional population of S0s increases but that of Scs decreases with increasing galaxy density. On the other hand, the SBs show no significant difference of the subclass populations among the environents except the binary one. Secondly, in the case of SAs, the fractional subclass populations in the binary environment are different from those in the other environments (i.e. field and clusters). This difference implies that the environmental effect inherent in the clusters may be other than the usual binary collision of galaxies.

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