Neutral hydrogen observations of the interacting galaxies NGC 4725 and NGC 4747.

November 1984 • 1984A&A...140..125W

Authors • Wevers, B. M. H. R. • Appleton, P. N. • Davies, R. D. • Hart, L.

Abstract • New high sensitivity single dish and aperture synthesis H I observations are presented of the galaxies NGC 4725 and NGC 4747. The kinematics and distribution of H I in the two galaxies strongly suggest that they are tidally interacting. A 45 - 50 kpc long H I plume extends from the centre of the small peculiar galaxy NGC 4747 but is offset in position angle by 11° from an associated optical plume. To the south of the galaxy a weaker clumpy H I plume is observed which points back towards NGC 4725. This plume has a small velocity gradient along its length which is in the opposite sense to that of the main rotation of the galaxy. The giant spiral galaxy NGC 4725 is dominated in H I by a main outer arm. Evidence is presented which shows that the arm is probably warped out of the plane of the galaxy. A number of other inner spiral arms and an inner H I ring are discussed.

Links

• SIMBAD http://simbad.u-strasbg.fr/simbo.pl?bibcode=1984A%26A...140..125W
• NED https://ned.ipac.caltech.edu/uri/NED::InRefcode/1984A%26A...140..125W
• SPIRES http://inspirehep.net/search?p=find+j+AAEJA,140,125
• GIF http://articles.adsabs.harvard.edu/full/1984A%26A...140..125W
• ARTICLE http://articles.adsabs.harvard.edu/full/1984A%26A...140..125W?defaultprint=YES