Origins of the extragalactic background at 1 mm from a combined analysis of the AzTEC and MAMBO data in GOODS-N

摘要: We present a study of the cosmic infrared background, which is measure dust-obscured activity in all galaxies Universe. venture to isolate responsible for the background at 1 mm; with spectroscopic and photometric redshifts we constrain redshift distribution these galaxies. create deep 1.16mm map (σ ~ 0.5 mJy) by combining the AzTEC 1.1 mm MAMBO 1.2 data sets Great Observatories Origins Deep Survey North (GOODS-N) region. This combined contains 41 secure detections, 13 of which are new. By averaging 1.16 flux densities individually undetected galaxies with 24 μm >25 μJy, resolve 31–45 per cent background. Repeating our analysis on SCUBA 850 map, higher percentage (40–64 per cent) background. A majority background resolved (attributed to individual galaxies) both wavelengths comes from z > 1.3. If ratio the resolved submillimetre millimetre applied reasonable scenario the origins unresolved 60–88 total mm background