The radio AGN population dichotomy: Green valley Seyferts versus red sequence low-excitation AGN

Details The radio AGN population dichotomy: Green valley Seyferts versus red sequence low-excitation AGN The radio AGN population dichotomy: Green valley Seyferts versus red sequence low-excitation AGN

2009-05-18

arxiv.org/abs/0905.2989v2

Astrophys.J.699:L43-L47,2009

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

5 pages, 4 figures, 1 table, to appear in ApJL

Scientific paper

10.1088/0004-637X/699/1/L43

Radio outflows of active galactic nuclei (AGN) are invoked in cosmological models as a key feedback mechanism in the latest phases of massive galaxy formation. Recently it has been suggested that the two major radio AGN populations -- the powerful high-excitation, and the weak low-excitation radio AGN (HERAGN and LERAGN, resp.) -- represent two earlier and later stages of massive galaxy build-up. To test this, here we make use of a local (0.04

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