A survey of the Pisces-Perseus supercluster. V - The declination strip +33.5 deg to +39.5 deg and the main supercluster ridge

Details A survey of the Pisces-Perseus supercluster. V - The declination strip +33.5 deg to +39.5 deg and the main supercluster ridge A survey of the Pisces-Perseus supercluster. V - The declination strip +33.5 deg to +39.5 deg and the main supercluster ridge

Apr 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993aj....105.1251w&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 105, no. 4, p. 1251-1270.

Astronomy and Astrophysics

Astronomy

71

Galactic Clusters, Optical Emission Spectroscopy, Radial Velocity, Radio Astronomy, Sky Surveys (Astronomy), Spatial Distribution, Cosmology, Distance, Emission Spectra, H Lines, Red Shift, Tables (Data)

Scientific paper

Measurements of 544 radial velocities, 229 optical and 315 in the 21 cm H I line, are presented for galaxies, mostly in the declination strip between +33.5 and +39.5 deg in the region of the Pisces-Perseus supercluster. These are combined with other available data to investigate the linear structure identified as the main supercluster ridge. The main ridge of the supercluster extends at least 50/h Mpc before it disappears into the zone of avoidance east of Perseus. Confinement both on the plane of the sky and in the velocity dimension imply an axial ratio of greater than 10:1 and an inclination with respect to the plane of the sky of less than about 12 degrees. The relative proximity, low inclination to the plane of the sky, and high contrast relative to the foreground and background, help to make the Pisces-Perseus filament one of the most prominent features in the extragalactic sky on large scales.

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