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A Multi-Frequency Study of the Peculiar Interacting System ARP 206

Published online by Cambridge University Press:  12 April 2016

Louis Noreau  and
Philipp P. Kronberg
Louis Noreau
Affiliation:
Department of Astronomy, University of Toronto and Département de Physique & Observatoire Astronomique du Mont Mégantic, Université Laval
Philipp P. Kronberg
Affiliation:
Department of Astronomy, University of Toronto

Extract

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Arp 206 is a nearby (7.8 Mpc), relatively large (7′.5 x 2′.0), and bright ( = 11.07) interacting system comprising unequal members: NGC 3432 and UGC 5983. A third anonymous galaxy, “Arp 206c”, is visible in the field, (see Figure la) Vorontsov-Velyaminov (1959) included the NGC 3432-UGC 5983 pair in his Atlas and Catalogue of Interacting Galaxies (VV-11). On the other hand Arp (1966) interpreted the system as a galaxy with material ejected from the nucleus (Arp 206).

Bertola (1966, 1968, and priv. comm.) obtained long-slit spectra of the largest galaxy of the pair, NGC 3432. This showed strong non-circular motions that could be interpreted as an explosion in its nucleus. This work is in line with a similar study of another system, Arp 205 (Bertola et al. 1983, Noreau and Kronberg 1986, 1987). In this first case it was found that the non-circular radial velocities were caused by the ‘re-entry’ of galactic material torn away by the interacting system.

Type
I. Classical Observations of Pairs
Information
International Astronomical Union Colloquium , Volume 124: Paired and Interacting Galaxies , 1990 , pp. 69 - 73
Copyright
Copyright © NASA 1990

References

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