The noninteracting spiral pair, NGC 450/UGC 807

Details The noninteracting spiral pair, NGC 450/UGC 807 The noninteracting spiral pair, NGC 450/UGC 807

Aug 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...271..556r&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 271, Aug. 15, 1983, p. 556-563.

Astronomy and Astrophysics

Astrophysics

26

Galactic Rotation, Red Shift, Spiral Galaxies, Angular Velocity, Interacting Galaxies, Magnitude, Tides

Scientific paper

The rotation curves of NGC 450 and UGC 807 have been measured in order to investigate the possible association of the two spiral galaxies. It is concluded that the two galaxies are widely separated in space, with each galaxy at its Hubble distance. The systemic velocity of UGC 807 is 11,587 km/s, compared with only 1863 km/s for NGC 450. This conclusion follows from the shapes and amplitudes of the rotation curves, which are sensitive to the galaxy mass distribution, and hence luminosity. The shapes for both rotation curves are normal for isolated galaxies and exhibit none of the features observed in tidally interacting galaxies.

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