报告题目：The relationship between AGN accretion luminosity and host star formation in dusty AGNs

报 告 人：Y. Sophia Dai, 戴昱 (Caltech)

报告时间：10月23日（周五）下午2：00

报告地点：蒙民伟科技南楼S727

报告摘要：We study the relationship between X-ray luminosity and the star formation rate (SFR) for a sample of dusty active galactic nuclei (AGNs) at 0.04 < z < 3.3. our sample consists of dusty agns detected in both x-ray and far-infrared by xmm and herschel in the xmm-lss field. all of the selected targets have spectroscopic redshifts and broad band photometry that allows black hole mass and spectral energy distribution (sed) analysis. we compare their x-ray and agn-removed infrared luminosities, and study the dependence of the observed relation on luminosity, obscuration, supermassive black hole mass, eddington ratio, and the fraction of agn contribution to infrared luminosity. we find a positive correlation between l_x and sfr up to z="3." this is consistent with the secular evolution scenario, in which the nucleus and galaxy are fueled by the same gas supply at a relatively constant ratio. we also investigate the effect of binning choices on the observed trend. comparing our results to those in the literature, we propose a unified physical scenario that explains the observed l_x-sfr connection once sample selection bias is accounted for.