An IRS Survey of Infrared Sources in the IRAS and SDSS

Details An IRS Survey of Infrared Sources in the IRAS and SDSS An IRS Survey of Infrared Sources in the IRAS and SDSS

May 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007sptz.prop40991h&link_type=abstract

Spitzer Proposal ID #40991

Computer Science

Scientific paper

We propose to conduct an IRS low-resolution survey of 98 sources in the IRAS and SDSS cross-matched catalogue. The sample covers representative 2/3 of all sources that are optically faint (r_{petrosian}>16 mag in the SDSS galaxy sample) and infrared bright (f(25μm)>100mJy). This criteria is similar to the one looking for high-redshift dusty sources in various surveys, therefore provide a comparable sample to study the distribution of the spectral properties such as the silicate strengths, PAH emissions, atomic and molecular emission lines, to compare with and understand the high-redshift dusty sources. This sample probes a much lower infrared luminosity than previous large samples on ULIRGs and LIRGs, and gives a different but complementary view on infrared sources in the local universe. The uniform optical spectra and image of the SDSS database is an important auxiliary tool and can be connected with the properties of the IR properties and environmental properties, and help to reveal the evolution of IR sources in the low-luminosity range. This IRS GTO proposal takes 25 hrs.

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