NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-05-20 T01:49:38 PDT
Help | Comment | NED Home

For refcode 1993AJ....105.1251W:
Retrieve 538 NED objects in this reference.
Please click here for ADS abstract

NED Abstract

Copyright by American Astronomical Society. Reproduced by permission
1993AJ....105.1251W A SURVEY OF THE PISCES-PERSEUS SUPERCLUSTER. V. THE DECLINATION STRIP +33.5^deg^ TO +39.5^deg^ AND THE MAIN SUPERCLUSTER RIDGE GARY WEGNER Department of Physics and Astronomy, Dartmouth College, Hanover, New Hampshire 03755 MARTHA P. HAYNES AND RICCARDO GIOVANELLI National Astronomy and Ionosphere Center and Department of Astronomy, Cornell University, Ithaca, New York 14853 Received 1992 October 14; revised 1992 November 18 ABSTRACT 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 +33.5^deg^ <{delta} < +39.5^deg^ in the region of the Pisces-Perseus super-cluster. 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 50h^-1^ 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 ten to one and an inclination with respect to the plane of the sky of less than about 12 degrees. The smoothed volume density contrast over the whole ridge averages more than a factor of 6 relative to the average density derived for the whole sample. 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.
Retrieve 538 NED objects in this reference.
Please click here for ADS abstract

Back to NED Home