Spitzer Spectroscopy of 8 micron bright, optically faint objects identified in the IRAC Shallow Survey

Details Spitzer Spectroscopy of 8 micron bright, optically faint objects identified in the IRAC Shallow Survey Spitzer Spectroscopy of 8 micron bright, optically faint objects identified in the IRAC Shallow Survey

Sep 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004sptz.prop..111f&link_type=abstract

Spitzer Proposal ID #111

Physics

Scientific paper

This program will obtain IRS short wavelength low resolution first and second order spectra of 5 objects identified in the IRAC Shallow Survey as having extremely large 8 micron to I band flux ratios (of order 1,000 or more). Four objects in the sample have 8um fluxes above 0.4mJy and I magnitudes fainter than 24, the fifth has an 8um flux of 0.35mJy and is not detected to I > 25. We hope that from 5.3 - 14.5 um spectroscopy will determine whether these objects are low redshift starburst galaxies, z ~ 1.5 ULIRGs, heavily reddened AGN, very high redshift quasars, or some new phenomenon.

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