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Seyfert Activity in Ring Galaxies Due to Galactic Interactions

Published online by Cambridge University Press:  25 May 2016

Tapan K. Chatterjee
Tapan K. Chatterjee*
Affiliation:
Facultad de Ciencias, Fisico-Matematicas, Universidad A. Puebla, Apartado Postal 1316, Puebla, Mexico, e-mail: tchat@mailexcite.com

Extract

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Observations indicate that ring galaxies are more active than spirals (e.g., Ghigo et al., 1983 Appleton and Struck-Marcell, 1987). However, Seyfert activity is noted in only a few ring galaxies, e.g. NGC 985 (de Vaucouleurs & de Vaucouleurs 1975), NGC 1144 = Arp 118 (Huchra et al. 1982), ring galaxy in Sextans-optical counterpart of the IRAS source 09595-0755 (Wakamatus & Nishida). This is indicative of the fact that this type of activity requires favorable circumstances. In this context a previous work on the stellar episode of ring formation, Chatterjee (1984), is extended, including gas and studying the evolution of the ring structure, due to rebounds of the compact elliptical about the plane of the disk.

Type
IV. AGN Related Phenomena
Information
Symposium - International Astronomical Union , Volume 194: Activity in Galaxies and Related Phenomena , 1999 , pp. 424 - 425
Copyright
Copyright © Astronomical Society of the Pacific 1999 

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