Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981aj.....86..953w&link_type=abstract
Astronomical Journal, vol. 86, July 1981, p. 953-980.
Astronomy and Astrophysics
Astronomy
17
Galactic Clusters, Galactic Structure, Hydrogen Clouds, Spiral Galaxies, Galactic Rotation, H Lines, Radial Velocity, Red Shift, Tables (Data), Velocity Distribution
Scientific paper
The three-dimensional distribution of spiral galaxies is analyzed for a 1080 sq deg region surrounding the Coma cluster, A 1367 and Zw 74-23 (NGC 5416 cluster). H I observations of spiral galaxies having angular diameters less than 2 arcmin, with the exception of six NGC objects and one IC object, are used, detecting 87 galaxies with 67 redshifts reported for the first time. A population of faint isolated galaxies as much as 30 deg from Coma or A 1367 is found having radial velocities near 7000 km/s, and a group between Coma and A 1367 is found containing no galaxies with m(p) less than 15.0. South of A 1367 three groups are found located 12 deg from the core with radial velocities near 7000 km/s and a projected diameter less than 2 Mpc. South of 20 deg declination at least four clusters and isolated galaxies are found which could be part of the southern extension of the Coma-A 1367 supercluster. Assuming all the detected isolated spirals belong to the Coma-A 1367 supercluster, the angular extent of the supercluster is almost a radian in the plane of the sky.
Kerr Frank J.
Williams Barbara A.
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