Peculiar motions in superclusters: Perseus--Pisces

Details Peculiar motions in superclusters: Perseus--Pisces Peculiar motions in superclusters: Perseus--Pisces

Dec 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993a%26a...280...20b&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 280, no. 1, p. 20-32

Astronomy and Astrophysics

Astronomy

7

Galactic Clusters, Galactic Evolution, Infrared Astronomy, Near Infrared Radiation, Radio Astronomy, Velocity Distribution, Astronomical Photometry, Cosmology, Decimeter Waves, Distance, Hydrogen, Infrared Photometry, Red Shift, Ultrahigh Frequencies, Universe

Scientific paper

We discuss the near infrared observations obtained for a set of 81 galaxies in the region of the Perseus--Pisces supercluster. From these, in conjunction with the 21 cm data of the Arecibo sample, we estimate the peculiar velocities via the Tully-Fisher relation and the model of the local perturbations as derived by Han and Mould. From the data discussed we find that the supercluster main structure is shrinking. To explain the size and velocities observed the model requires, for the supercluster, a mean overdensity of about delta rho/rho = 9 which corresponds to a total mass of 1016 solar masses to cover an extension of about 100 Mpc.

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