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Tidal Interactions in M81 Group

Published online by Cambridge University Press:  25 May 2016

M.S. Yun
M.S. Yun*
Affiliation:
National Radio Astronomy Observatory, P.O Box 0, Socorro, NM 87801 (USA)

Extract

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At a distance of 3.3 Mpc, M81 group is one of the nearest groups of galaxies and thus an ideal place to study various galactic phenomena. Observations at all wavelengths can be made with high sensitivity and excellent spatial resolution (1″ = 15 pc). The three core members M81, M82, and NGC 3077 are known to be closely interacting from the 21cm HI emission studies (van der Hulst 1979, Yun et al. 1993, 1994), and all three galaxies show evidence for an AGN or starburst activity, possibly induced by the on-going tidal interactions. A more distant member NGC 2976 also shows evidence for tidal interaction within the group (Appleton et al., 1981). Therefore M81 group is an excellent test ground for studying tidal interaction and tidally induced activities.

Type
Tidal Interactions
Information
Symposium - International Astronomical Union , Volume 186: Galaxy Interactions at High and Low Redshift , 1999 , pp. 81 - 88
Copyright
Copyright © Kluwer 1999 

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