BLISS and SPICA: Revealing the History of Energy Production in Dusty Galaxies with Far-IR Spectroscopy at the Background Limit

Details BLISS and SPICA: Revealing the History of Energy Production in Dusty Galaxies with Far-IR Spectroscopy at the Background Limit BLISS and SPICA: Revealing the History of Energy Production in Dusty Galaxies with Far-IR Spectroscopy at the Background Limit

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aas...20510007b&link_type=abstract

American Astronomical Society Meeting 205, #100.07; Bulletin of the American Astronomical Society, Vol. 36, p.1509

Astronomy and Astrophysics

Astrophysics

3

Scientific paper

Half the energy produced since the Big Bang emerges in the far-infrared, the result of dust in luminous galaxies around the historical peak in energy production, redshifts of 1-5. Measuring the redshifts, masses, and conditions in these dusty galaxies is critical for a complete history of star formation, metal and dust production, and galaxy evolution. While tens of thousands of these galaxies are being and will be discovered in the continuum, far-IR spectroscopic follow-up will be difficult for galaxies beyond z ˜1 with existing platforms. The combination of a large cold telescope such as SPICA (3.5 m, 4.5 K) and a sensitive direct-detection spectrometer offers factors of 100-10,000 sensitivity gain for moderate resolution spectroscopy, allowing line diagnostics of dusty galaxies throughout the era of galaxy evolution. We are studying the prospects for a zodi-background-limited far-IR spectrometer (BLISS) built by NASA for the Japanese SPICA mission. We outline the astrophysical experiments enabled by SPICA in the far-IR, and present the instrument concepts and key technologies for BLISS.
Our work is supported as part of NASA's Origins Probe concept studies program.

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