Galaxy spins in the Virgo cluster

Details Galaxy spins in the Virgo cluster Galaxy spins in the Virgo cluster

Jan 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apj...252...75h&link_type=abstract

Astrophysical Journal, Part 1, vol. 252, Jan. 1, 1982, p. 75-80. Consiglio Nazionale delle Ricerche

Astronomy and Astrophysics

Astrophysics

34

Angular Momentum, Galactic Rotation, Orbits, Spin Dynamics, Spiral Galaxies, Virgo Galactic Cluster, Astronomical Models, Galactic Evolution, Torque

Scientific paper

The sign of the inclination of the galactic plane and the sense of the internal rotation is determined for the cases of 20 galaxies in the Virgo cluster, thereby completely defining the internal angular momentum vector, or spin, for each of these galaxies. No evidence is found of either a non-zero vector sum in the 20 spins, or of a correlation between spin and orbital motion through the cluster. While the spin vectors are not entirely random, the character of this nonrandomness is not clear. These results are found to be compatible with the identification of tidal torques as the spin-up mechanism for galaxies, and with most models of cluster formation.

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