Astronomy and Astrophysics – Astrophysics
Scientific paper
Nov 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991a%26a...251..411v&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 251, no. 2, Nov. 1991, p. 411-416.
Astronomy and Astrophysics
Astrophysics
8
Intergalactic Media, Interstellar Magnetic Fields, Virgo Galactic Cluster, Astronomical Coordinates, Spatial Distribution
Scientific paper
The warp excess in nearby spiral galaxies is investigated as well as its earlier interpretation in terms of a magnetic field on a distance scale out to a redshift of 0.3 (out to 1200 Mpc, for H(0) = 75 km/s Mpc). It is shown from a study of the rotation measure data as a function of redshift that such a large scale is unwarranted, and that any warp excess may be rather local and spurious with a small S/N of 1.7. It is inferred that a local intergalactic magnetic field must be less than 50 microG. To facilitate studies on the local supercluster of galaxies, a Virgo-center supercluster coordinate system is proposed, where longitude 0 deg goes through the center of the Virgo cluster of galaxies at the center of the local supercluster.
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