Other
Scientific paper
Jan 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993egte.conf..330v&link_type=abstract
In NASA. Ames Research Center, The Evolution of Galaxies and Their Environment p 330-331 (SEE N93-26706 10-90)
Other
1
Andromeda Galaxy, Boundary Layers, Galactic Nuclei, Morphology, Spiral Galaxies, Vertical Distribution, Halos, Imaging Techniques, Red Shift, Spectroscopy
Scientific paper
NGC 3079 is an edge-on SB(s)c galaxy at a redshift of 1225 km/s relative to the Local Group. Earlier researchers found a spectacular 'figure-eight' radio structure aligned along the minor axis of the galaxy, centered on the nucleus, and extending 3 kpc above and below the plane. The geometry of this structure and the evidence of unusually high nuclear gas velocities suggest that a wind-type outflow from the nucleus is taking place. The disk of NGC 3079 is also remarkable: it is extremely rich in H 2 regions and is the only unambiguous example of a galaxy outside M31 and our own Galaxy to exhibit 'Heiles-like' shells. Other researchers have also identified a nebulosity with a ragged X-shaped morphology formed by a system of lumpy filaments with individual lengths of 3 - 5 kpc. They suggest that this material is ambient halo gas entrained into the boundary layers of the nuclear outflow. The complex structure of the line emission in NGC 3079 makes this object an ideal target for an imaging spectroscopic study. The present paper reports the preliminary results of such a study.
Bland-Hawthorn Jonathan
Cecil Gerald
Tully Brent R.
Veilleux Sylvain
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