BLISS for SPICA: Far-IR Spectroscopy at the Background Limit

Details BLISS for SPICA: Far-IR Spectroscopy at the Background Limit BLISS for SPICA: Far-IR Spectroscopy at the Background Limit

Oct 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aspc..375..199b&link_type=abstract

From Z-Machines to ALMA: (Sub)Millimeter Spectroscopy of Galaxies ASP Conference Series, Vol. 375, proceedings of the conference

Astronomy and Astrophysics

Astronomy

Scientific paper

We present the scientific motivation, point designs, and plans for a background-limited infrared-submillimeter spectrograph (BLISS) for the Japanese SPICA mission. SPICA will be a 3.5 meter telescope cooled to below 5 K and offers the potential for far-IR observations limited only by the zodiacal dust emission and other diffuse foregrounds. BLISS on SPICA will provide moderate-resolution (R ˜ 1000) spectroscopy from 40--600 microns at this background limit, achieving sensitivities below 10-20 W m-2 in modest integrations. This huge advance will enable the first routine survey spectroscopy of the redshift 0.5 to 5 galaxies that produce the cosmic far-IR background. The far-IR fine-structure and molecular transitions are immune to dust extinction, and will unambiguously reveal these galaxies' redshifts, stellar and AGN contents, gas properties, and metallicities-- in aggregate, the history of the population.

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