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Title	Spectroscopic Redshifts to z > 2 for Optically Obscured Sources Discovered with the Spitzer Space Telescope
Authors	Houck, J. R.; Soifer, B. T.; Weedman, D.; Higdon, S. J. U.; Higdon, J. L.; Herter, T.; Brown, M. J. I.; Dey, A.; Jannuzi, B. T.; Le Floc'h, E.; Rieke, M.; Armus, L.; Charmandaris, V.; Brandl, B. R.; Teplitz, H. I.
Bibcode	2005ApJ...622L.105H Search ADS ↗
Abstract	We have surveyed a field covering 9.0 deg² within the NOAO Deep Wide-Field Survey region in Bootes with the Multiband Imaging Photometer on the Spitzer Space Telescope (SST) to a limiting 24 μm flux density of 0.3 mJy. Thirty-one sources from this survey with F_24μm>0.75 mJy that are optically very faint (R>~24.5 mag) have been observed with the low-resolution modules of the Infrared Spectrograph on SST (IRS). Redshifts derived primarily from strong silicate absorption features are reported here for 17 of these sources; 10 of these are optically invisible (R>~26 mag), with no counterpart in B_W, R, or I. The observed redshifts for 16 sources are 1.713 L_solar.
Objects	21 Objects Search NED ↙

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