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OATS-DAUT SEMINAR
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Speaker:
Vincenzo Mainieri (ESO, Munich)
Title:
What can we learn on obscured AGN from the COSMOS Survey
Date: Wednesday, October 3rd, 2007
Time: 12:00
Venue: Villa Bazzoni
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Abstract: So far, a major challenge in tracking SBH growth at
high redshift has been due to the fact that the growth phase of SBHs
likely coincides with periods of high obscuration. It is extremely
difficult to identify and follow up sufficiently large samples of such
obscured AGN, since they are generally undetected at optical
wavelengths. It is crucial to achieve a combination of wide area
together with deep sensitivity in order to produce a complete sample
of obscured AGN up to high redshift. The COSMOS survey is uniquely
optimized to address this issue: it covers up to 2 squares degrees at
X-ray, optical, IR and radio wavelengths. I will review the status of
the different follow-up studies inside COSMOS relevant for this study,
present the result of an X-ray spectral analysis on ~1000 X-ray
selected AGN and discuss selection methods of obscured AGN using the
Spitzer bands.
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