来自IIFSCz的超亮红外星系
Hyperluminous infrared galaxies from IIFSCz
摘要：
我们提出了一个目录的179个超亮红外星系（HLIRGs）从帝国IRAS-FSS红移（IIFSCz）目录。在至少两个远红外波段探测到的92个中，62个被类似M82的星暴控制，22个被类似Arp 220的星暴控制，8个被活动星系核尘埃环控制。根据以前的引力透镜研究和检查HST档案图像的另外5个对象，我们估计的分数HLIRGs显着透镜为10- 30%。我们显示了简单的红外模板适合23个HLIRGs的光谱红移和至少5个光度带的SED。大部分的恒星都可以用两个简单的模板组合：活动星系核尘埃环和类似M82的星暴。在光学上，17个天体具有类星体模板，6个天体具有星系模板。23个天体中有20个（87%）显示出活动星系核的证据，无论是从光学连续谱还是从活动星系核尘埃环的特征，但在23个天体中有14个（61%）的辐射光度中，星暴成分是主要的贡献。隐含的恒星形成率，即使在校正透镜放大率后，也超过1000 Mo /yr。我们使用红外模板拟合模型来预测所有HLIRGs在亚毫米波长的通量，并显示在350和850亩的预测。大多数的850 μ通量比5毫焦亮，所以应该很容易用目前的亚毫米望远镜探测到。在普朗克全天巡天观测中，至少有15%应在350 mu处可探测到，所有z < 0.9的普朗克全天巡天源应是IIFSCz源。从亮度-体积检验中我们发现HLIRGs表现出强烈的演化。一个简单的指数光度演化适用于所有的HLIRGs将是一致的红移箱0.3-0.5，0.5-1和1-2中发现的光度函数。
英文摘要：
We present a catalogue of 179 hyperluminous infrared galaxies (HLIRGs) from the Imperial IRAS-FSS Redshift (IIFSCz) Catalogue. Of the 92 with detections in at least two far infrared bands, 62 are dominated by an M82-like starburst, 22 by an Arp220-like starburst and 8 by an AGN dust torus. On the basis of previous gravitational lensing studies and an examination of HST archive images for a further 5 objects, we estimate the fraction of HLIRGs that are significantly lensed to be 10-30%. We show simple infrared template fits to the SEDs of 23 HLIRGs with spectroscopic redshifts and at least 5 photometric bands. Most can be fitted with a combination of two simple templates: an AGN dust torus and an M82-like starburst. In the optical, 17 of the objects are fitted with QSO templates, 6 are fitted with galaxy templates. 20 of the 23 objects (87%) show evidence of an AGN either from the optical continuum or from the signature of an AGN dust torus, but the starburst component is the dominant contribution to bolometric luminosity in 14 out of 23 objects (61%). The implied star-formation rates, even after correcting for lensing magnification, are in excess of 1000 Mo /yr. We use infrared template-fitting models to predict fluxes for all HLIRGs at submillimetre wavelengths, and show predictions at 350 and 850 mu. Most would have 850 mu fluxes brighter than 5 mJy so should be easily detectable with current submillimetre telescopes. At least 15% should be detectable in the Planck all-sky survey at 350 mu and all Planck all-sky survey sources with z < 0.9 should be IIFSCz sources. From the luminosity-volume test we find that HLIRGs show strong evolution. A simple exponential luminosity evolution applied to all HLIRGs would be consistent with the luminosity functions found in redshift bins 0.3-0.5, 0.5-1 and 1-2.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
