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| Paper: |
AGN and Starbursts at High Redshift Through millimeter detection of dust and molecules |
| Volume: |
290, Active Galactic Nuclei: from Central Engine to Host Galaxy |
| Page: |
583 |
| Authors: |
Omont, A.; Cox, P.; Beelen, A.; Bertoldi, F.; Carilli, C. L. |
| Abstract: |
Together with surveys for dust emission of field high z ultraluminous IR galaxies, the sensitivity of MAMBO/IRAM-30m and SCUBA/JCMT allows to probe mm/submm emission of large samples of high z candidates. Such studies are particularly successfull with known powerful high z AGN, QSOs and radiogalaxies, whose more than 80 have already been detected at 0.85-1.2mm. I will particularly report on the 60 bright QSOs recently detected by MAMBO/IRAM-30m. Within this limited statistics, confirmed by similar data from SCUBA/JCMT, there is no indication of a strong dependence of the QSO millimeter luminosity function on redshift in the range z = 2-4.5, and only a mild dependence, if any, on the QSO (UV) bolometric luminosity. The dust origin of this redshifted FIR emission is well confirmed. The restframe FIR luminosity could approach 1013 Lo. However, the origin of dust heating - starburst, AGN or both - remains unclear, although there are arguments, including CO detection in a few sources, for at least a partial starbust contribution, implying star formation rates maybe up to ∼1000 Mo/yr. I will briefly address the situation of CO detections in about 15 prominent high z AGN, and the inferred information about molecular gas. |
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