Submillimeter Sources
المؤلف:
HOUJUN MO, FRANK VAN DEN BOSCH, SIMON WHITE
المصدر:
GALAXY FORMATION AND EVOLUTION
الجزء والصفحة:
p-78
2026-11-02
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Since the Lyman-break technique and Lyα imaging select galaxies according to their rest-frame UV light, they may miss dust-enshrouded star-forming galaxies, the high-redshift counterparts of local starbursts. Most of the UV photons from young stars in such galaxies are absorbed by dust and re-emitted in the far-infrared. Such galaxies can therefore be detected in the submillimeter (sub-mm) band, which corresponds to rest-frame far-infrared at
. Deep surveys in the sub-mm bands only became possible in the mid-1990s with the commissioning of the Submillimeter Common-User Bolometer Array (SCUBA; see Holland et al., 1999), operating at 
and 
, on the James Clerk Maxwell Telescope (JCMT). This led to the discovery of an unexpectedly large population of faint sub-mm sources (Smail et al., 1997). An extensive and difficult observational campaign to identify the optical counterparts and measure their redshifts has shown that the majority of these sources are indeed starburst galaxies at a median redshift of 
Some of the strong sub-mm sources with measured redshifts have inferred star-formation rates as high as several 
, similar to those of ULIRGS at 
. Given the large number density of SCUBA sources, and their inferred star-formation rates, the total number of stars formed in these systems may well be larger than that formed in the Lyman-break galaxies at the same redshift (Blain et al., 1999).
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