Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986apj...308...36s&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 308, Sept. 1, 1986, p. 36-45.
Astronomy and Astrophysics
Astronomy
14
Astronomical Photometry, Galactic Rotation, Radio Astronomy, Radio Galaxies, Elliptical Galaxies, Galactic Structure, Radio Jets (Astronomy), Resolution, Spiral Galaxies
Scientific paper
The results of a radio and optical study of the interacting elliptical-spiral system NGC 5090-5091 are presented. The radio data consist of synthesis maps of 50-arcsec resolution constructed from data obtained from the Fleurs and Molonglo synthesis telescopes. The main conclusions to be drawn from the data are as follows. The rotation axis of NGC 5090 is most closely aligned with the photometric major axis. The radio axis is inclined at about 70 deg to the rotation axis and is perpendicular to the line joining the two nuclei. The morphology of NGC 5091 is consistent with tidal disruption by NGC 5090 in an initially unbound retrograde encounter. The interaction between NGC 5090 and NGC 5091 may be responsible, via an inner Lindblad resonance, for enhanced fueling of the nuclear source in NGC 5090, and this may produce jets propagating perpendicular to the orbital plane of NGC 5091.
Bicknell Geoffrey V.
Smith Matthew R.
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