论文标题
Subaru红外自适应光学辅助高空间分辨率成像搜索附近的超湿红外星系中的发光双重活性银核
Subaru Infrared Adaptive Optics-assisted High-spatial-resolution Imaging Search for Luminous Dual Active Galactic Nuclei in Nearby Ultraluminous Infrared Galaxies
论文作者
论文摘要
我们提出红外K'-（2.1微米）和L'-band（3.8微米）高空间分辨率（<0.3“）成像观测值（Z <0.17）超浮标的红外星系（ULIRGS），辅助了Subaru temien compact compact compact compact Redem em em em em em em em em em em em em em em em em em em em em em em em em em em em em em em em em em em em em em em em em em em em em em em em em em em em em em em s comptact。 （AGN）由于AGN加热的热灰尘发射 with resolved multiple nuclear K'-band emission, we estimate the activation of supermassive black holes (SMBHs) at individual galaxy nuclei in the form of AGN luminosity normalized by SMBH mass inferred from host galaxy stellar luminosity. We confirm a trend that more massive SMBHs in K'-band brighter primary galaxy nuclei are generally more active, with higher SMBH-mass-normalized AGN luminosity与富含气体的主要星系合并的数值模拟所预测的K'-Band次要星系核中的大量SMBH相比，与可用的（无单位的smbrons-smbrons-smervation and smerbiation and smerbiatiation smervation and I. smerbiation and smerbiation and smerviation and smerviation and smerviation and smerviation and smerviation and smerviation and Activation and Activation and smervation and smerviation smerviation and smerviation and-i.这种红外的难以捉摸的AGN可能导致附近合并Ulirgs的红外发现的发光双重AGN。
We present infrared K'- (2.1 micron) and L'-band (3.8 micron) high-spatial-resolution (<0.3") imaging observations of 17 nearby (z < 0.17) ultraluminous infrared galaxies (ULIRGs) assisted with the adaptive optics of the Subaru Telescope. We search for compact red K'-L' color emission as the indicator of luminous active galactic nuclei (AGNs) due to AGN-heated hot dust emission. Two luminous dual AGN candidates are revealed. Combining these results with those of our previous study, we can state that the detected fraction of luminous dual AGNs in nearby ULIRGs is much less than unity (<20%), even when infrared wavelengths >2 micron are used that should be sensitive to buried AGNs due to small dust extinction effects. For ULIRGs with resolved multiple nuclear K'-band emission, we estimate the activation of supermassive black holes (SMBHs) at individual galaxy nuclei in the form of AGN luminosity normalized by SMBH mass inferred from host galaxy stellar luminosity. We confirm a trend that more massive SMBHs in K'-band brighter primary galaxy nuclei are generally more active, with higher SMBH-mass-normalized AGN luminosity than less massive SMBHs in K'-band fainter secondary galaxy nuclei, as predicted by numerical simulations of gas-rich major galaxy mergers. In two sources, the presence of even infrared elusive extremely deeply buried AGNs is indicated by comparisons with available (sub)millimeter data. Non-synchronous SMBH activation (i.e., less activation of less massive SMBHs) and the possible presence of such infrared elusive AGNs may be responsible for the small fraction of infrared-detected luminous dual AGNs in nearby merging ULIRGs.
