Induced Activity in Mixed-Morphology Galaxy Pairs

Details Induced Activity in Mixed-Morphology Galaxy Pairs Induced Activity in Mixed-Morphology Galaxy Pairs

Apr 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008rmxac..32..170g&link_type=abstract

The Nuclear Region, Host Galaxy and Environment of Active Galaxies (Eds. Erika Benítez, Irene Cruz-González, & Yair Krongold) Re

Astronomy and Astrophysics

Astronomy

5

Galaxies: Active, Galaxies: Interactions

Scientific paper

Results from a spectroscopic study of the nuclear emission of a sample of 97 spirals in isolated galaxy pairs with mixed morphology (E+S) are presented and discussed. The Main results of this study are: (1) AGN activity is found in 40% of the spiral galaxies in these pairs, (2) Only one out of the 39 AGN found shows type 1 activity, and (3) AGN tend to have closer companions than star forming galaxies. These results are at odds with a simple Unified Model for Seyferts, where only obscuration/orientation effects are of relevance, and neatly support an evolutionary scenario where interactions trigger nuclear activity.

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