Astronomy and Astrophysics – Astrophysics
Scientific paper
Oct 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992a%26as...95..129p&link_type=abstract
Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 95, no. 1, p. 129-193.
Astronomy and Astrophysics
Astrophysics
23
Elliptical Galaxies, Galactic Clusters, Galactic Evolution, Spiral Galaxies, Charge Coupled Devices, Galactic Structure, Red Shift
Scientific paper
We present the results of an isophotal shape analysis of a sample of 91 early-type galaxies belonging to the Perseus Cluster, using CCD R and V images obtained in very good seeing conditions. This survey uncovers fine details in the structure of a large percentage of these objects, including disks, bars and even spiral arms, so that a large variety of morphological types is proposed. A very conservative upper limit for the percentage of galaxies of the whole sample showing no deviations from ellipticity is given to be 20 percent. A lower limit for the detection of bars among galaxies newly classified as S0's or spirals is about 30 percent.
Davoust Emmanuael
Nieto Jean-Luc
Poulain P.
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