SPITZER INFRARED SPECTROMETER 16 m OBSERVATIONS OF THE GOODS FIELDS Academic Article uri icon

abstract

  • We present Spitzer 16m imaging of the Great Observatories Origins Deep Survey (GOODS) fields. We survey 150 arcmin2 in each of the two GOODS fields (North and South), to an average 3 depth of 40 and 65Jy, respectively. We detect 1300 sources in both fields combined. We validate the photometry using the 3-24m spectral energy distribution of stars in the fields compared to Spitzer spectroscopic templates. Comparison with ISOCAM and AKARI observations in the same fields shows reasonable agreement, though the uncertainties are large. We provide a catalog of photometry, with sources cross-correlated with available Spitzer, Chandra, and Hubble Space Telescope data. Galaxy number counts show good agreement with previous results from ISOCAM and AKARI with improved uncertainties. We examine the 16-24m flux ratio and find that for most sources it lies within the expected locus for starbursts and infrared luminous galaxies. A color cut of S16/S24 > 1.4 selects mostly sources which lie at 1.1 < z < 1.6, where the 24m passband contains both the redshifted 9.7m silicate absorption and the minimum between polycyclic aromatic hydrocarbon emission peaks.We measure the integrated galaxy light of 16m sources and find a lower limit on the galaxy contribution to the extragalactic background light at this wavelength to be 2.2 0.2 nWm-2 sr-1. 2011 The American Astronomical Society. All rights reserved.

published proceedings

  • ASTRONOMICAL JOURNAL

author list (cited authors)

  • Teplitz, H. I., Chary, R., Elbaz, D., Dickinson, M., Bridge, C., Colbert, J., ... Stern, D.

citation count

  • 59

complete list of authors

  • Teplitz, Harry I||Chary, Ranga||Elbaz, David||Dickinson, Mark||Bridge, Carrie||Colbert, James||Le Floc'h, Emeric||Frayer, David T||Howell, Justin H||Koo, David C||Papovich, Casey||Phillips, Andrew||Scarlata, Claudia||Siana, Brian||Spinrad, Hyron||Stern, Daniel

publication date

  • January 2011