An Ultra-Deep Spitzer Spectral Survey

Details An Ultra-Deep Spitzer Spectral Survey An Ultra-Deep Spitzer Spectral Survey

Oct 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005sptz.prop..262h&link_type=abstract

Spitzer Proposal ID #262

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Scientific paper

We propose to undertake an ultra-deep unbiased extragalactic spectral survey with the IRS in low-resolution mode, to probe the high-end tail of the line-to-continuum ratio in galaxies, and to look for galaxies with unusually high infrared line emission that might escape detection or escape notice in continuum surveys. Such a search is in large part motivated by the potential for novel types of objects, either detected primarily in the lines, or having abnormally high line-to-continuum ratios, either way enabling new insights and new approaches in the study of galaxies. In addition to the potential scientific yield of this experiment, the immediate tangible benefit will be to ascertain how well the noise in IRS data converges for very long integration times, enabling comparably deep integrations in other contexts, e.g., targeted searches for weak line emission. Additional benefits will result from new techniques for flat fielding and background subtraction within the data set.

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