Computer Science
Scientific paper
Jun 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005sptz.prop20573h&link_type=abstract
Spitzer Proposal ID #20573
Computer Science
Scientific paper
We propose a Spitzer/IRS search for aromatic hydrocarbon emission features to directly assess the energetic importance of star formation in QSOs. Comparison of the timescales of star formation activity with those of accretion have the potential to improve our understanding of the relation between the black holes in galaxy centers and the stellar content of galaxies, but to date, evidence of star formation in QSOs has been frustratingly indirect. As unambiguous signatures of star formation, and successfully used to estimate starburst luminosities in the local Universe, emission features of polyaromatic hydrocarbons (PAHs) represent a promising new tool to investigate star formation at high redshift; with the advent of Spitzer, searches for such features are now a realistic prospect. We therefore propose a pilot study of PAH features in a small sample of QSOs in which star formation is strongly suspected but not yet directly confirmed.
Carilli Chris
Helfand David
Mason Rachel
Petric Andreea
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