Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983a%26a...120...36s&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 120, no. 1, April 1983, p. 36-52.
Astronomy and Astrophysics
Astrophysics
30
Astronomical Photography, Galactic Clusters, Galaxies, Image Analysis, Red Shift, Astronomical Models, Color, Galactic Structure, Image Processing, Spiral Galaxies
Scientific paper
Seyfert's Sextet and VV 172, 5-m photographs have been subjected to image processing to yield field-galaxy density analysis, redshift-scaled imagery, interaction morphology display and enhancement, color difference imagery,modeling of the VV 172 halo, and image texture analysis of the spiral galaxy components of Seyfert's Sextet. An effort is made to evaluate the evidence for physical association of the discordant redshift components of these groups. An especially noteworthy characteristic of the groups is their extended luminous halos. The halo of VV 172 cannot be explained by the overlapping envelopes of galaxies with normal luminosity profiles, and the high redshift spiral galaxy in the Sextet is found to have an asymmetric internal structure and associated filament which suggest gravitational perturbation by the other members of the group.
Lorre Jean J.
Sulentic Jack W.
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