To what extent does star formation precede the onset of AGN activity?

Details To what extent does star formation precede the onset of AGN activity? To what extent does star formation precede the onset of AGN activity?

Sep 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004sptz.prop.3377i&link_type=abstract

Spitzer Proposal ID #3377

Physics

Scientific paper

There is increasing evidence that the onset of radio-loud AGN activity now appears to be closely related to starbursts, possibly triggered by mergers. A commonly proposed evolutionary scenario has emerged in which an interaction/merger leads to infall of gas to the nuclear region, triggering a starburst. This is followed by a large increase in the amount of material being fed to the central black hole, thereby triggering the production of strong radio emission (e.g. Heckman et al. 1986). Here we propose observations of a small sample of radio loud AGN which are known to be young, i.e. their active phase has been triggered well within the last million years. Our aim is to search, using mid-IR spectroscopy, for signatures of ongoing star formation. Since we can date, with some confidence, the onset of significant AGN activity in these systems (i.e. the radio jet) such a detection would offer strong support to an evolutionary scenario in which significant star formation precedes the onset of AGN activity.

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