Other
Scientific paper
May 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006sptz.prop30605g&link_type=abstract
Spitzer Proposal ID #30605
Other
Scientific paper
A key development from recent Chandra and XMM-Newton surveys has been the compilation of the first non-local (z=0.01-1) X-ray selected sample of normal galaxy candidates, with X-ray emission dominated by star-formation rather than AGN activity. This has opened the way to explore, for the first time, the star-formation history of the Universe at X-rays, providing information that is complementary to that obtained from other wavebands. However, concern has been raised for possible contamination of the X-ray selected star-forming samples by heavily obscured or low-level AGN activity that remains unidentified at the optical and the X-ray wavelengths. Addressing this issue is clearly essential to establish the link between X-ray emission and star-formation activity. This proposal aims to address this point using the unprecedented sensitivity of Spitzer to obtain low resolution mid-IR spectroscopy for a unique low-z X-ray selected star-forming galaxy sample. These observations will be used to (i) identify hidden AGNs using the diagnostic power of mid-IR spectroscopy and (ii) provide a quantitative relation between star-formation and X-ray luminosity for an X-ray selected galaxy sample (as opposed to optically selected samples studied todate).
Georgakakis Antonis
Georgantopoulos Ioannis
Rovilos Manolis
Tzanavaris Panayiotis
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