Vertical motions in the gaseous disk of the spiral galaxy NGC 3631

Details Vertical motions in the gaseous disk of the spiral galaxy NGC 3631 Vertical motions in the gaseous disk of the spiral galaxy NGC 3631

Nov 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998astl...24..764f&link_type=abstract

Astronomy Letters, Volume 24, Issue 6, November 1998, pp.764-773; Pis'ma v Astronomicheskii Zhurnal, Vol. 24, p. 883

Astronomy and Astrophysics

Astronomy

14

Scientific paper

The velocity field of the nearly face-on galaxy NGC 3631 is derived from observations in the Hα line on the 6-m telescope of the Special Astrophysical Observatory. These optical data are compared with radio observations of this galaxy (Knapen 1997). It is argued that the two-armed spiral structure of NGC 3631 has a wave nature, and that the observed vertical gas motions represent motions in a spiral density wave.

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