Astronomy and Astrophysics – Astrophysics
Scientific paper
Oct 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980apj...241...67s&link_type=abstract
Astrophysical Journal, Part 1, vol. 241, Oct. 1, 1980, p. 67-73.
Astronomy and Astrophysics
Astrophysics
22
Astronomical Catalogs, Galactic Clusters, Galactic Structure, Red Shift, Morphology, Spatial Distribution, Spiral Galaxies
Scientific paper
Spectra have been obtained for 23 galaxies near the center of the Virgo cluster. A master list of redshifts and morphology was assembled for all galaxies within 6 deg of the cluster center. Reanalysis of the mean redshift of the total spiral (S) and elliptical-lenticular (E/S0) samples indicates no difference. However, the late-type (Sbc-Scd) spirals are found to have a significantly higher mean radial velocity than early types. This shows up as an increase in redshift with radius, since the late-type spirals are found at an average distance of 3.8 deg from the central regions of the cluster. It is shown that the most significant difference in line-of-sight velocity dispersion occurs between lenticulars (S0) and spirals (S).
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