1. ASTRO-F, super- IRAS, the All-Sky Infrared Survey.
- Author
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Pearson, Chris P., Shibai, H., Matsumoto, T., Murakami, H., Nakagawa, T., Kawada, M., Onaka, T., Matsuhara, H., Ku, T., Yamamura, I., and Takagi, T.
- Subjects
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INFRARED astronomy , *GALACTIC evolution , *METAPHYSICAL cosmology , *ATMOSPHERIC effects of infrared radiation , *REDSHIFT - Abstract
We review the next-generation Japanese infrared space mission, ASTRO-F. ASTRO-F will be the first survey of the entire sky at infrared wavelengths since the IRAS mission almost 20 years ago. ASTRO-F will survey the entire sky in four far-infrared bands from 50 to 200 μm and two mid-infrared bands at 9 and 20 μm to sensitivities 10–1000 times deeper than the IRAS satellite at angular resolutions of 25–45 arcsec (cf. 2–5 arcmin for IRAS). ASTRO-F can be considered as a super- IRAS. Using the galaxy evolution model of Pearson, we produce expected numbers of sources under three different cosmological world models. We predict that ASTRO-F will detect of the order of tens of millions of sources in the far-infrared wavelength bands, most of which will be dusty luminous infrared/ultraluminous infrared galaxies, of which as many as half will lie at redshifts greater than unity. We produce number–redshift distributions, flux–redshift and colour–colour diagrams for the survey and discuss various segregation and photometric redshift techniques. Furthermore, we investigate the large-scale structure scales that will be accessed by ASTRO-F, discovering that ASTRO-F and SIRTF-SWIRE probe both different scales and redshift domains and concluding that the two missions will supplement rather than supplant one another. [ABSTRACT FROM AUTHOR]
- Published
- 2004
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