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Nuclear Activity in UZC Compact Groups

Published online by Cambridge University Press:  01 August 2006

M. A. Martinez ,
A. del Olmo ,
P. Focardi  and
J. Perea
M. A. Martinez
Affiliation:
Instituto de Astrofísica de Andalucía (IAA), CSIC, Spain
A. del Olmo
Affiliation:
Instituto de Astrofísica de Andalucía (IAA), CSIC, Spain
P. Focardi
Affiliation:
Dipartamento di Astronomia, Universitá di Bologna, Italy
J. Perea
Affiliation:
Instituto de Astrofísica de Andalucía (IAA), CSIC, Spain
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Abstract

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We have analyzed the level and type of nuclear activity in 720 galaxies belonging to a large complete sample of Compact Groups (UZC-CGs). We have found that most (67%) galaxies show emission lines and that the most frequent (43%) nuclear activity is AGN. AGNs are mainly hosted in bright early type galaxies and early spirals, at variance with HII which reside in late spirals of lower luminosity. CGs which have a dominant content of AGNs and TOs have larger σv and lower Rp than CGs dominated by HII.

Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2 , Symposium S235: Galaxy Evolution Across the Hubble Time , August 2006 , pp. 222
Copyright
Copyright © International Astronomical Union 2007

References

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