文章基本信息

标题：Dusty Universe viewed by AKARI far infrared detector
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作者：K. Malek ; A. Pollo ; T. T. Takeuchi 等
期刊名称：Earth, Planets and Space
电子版ISSN：1880-5981
出版年度：2013
卷号：65
期号：10
页码：1101-1108
DOI：10.5047/eps.2013.06.005
出版社：Springer Verlag
摘要：We present the results of the analysis of multiwavelength Spectral Energy Distributions (SEDs) of far-infrared galaxies detected in the AKARI Deep Field-South (ADF-S) Survey.The analysis uses a carefully selected sample of 186 sources detected at the 90 μ m AKARI band, identified as galaxies with cross-identification in public catalogues.For sources without known spectroscopic redshifts, we estimate photometric redshifts after a test of two independent methods: one based on using mainly the optical—mid infrared range, and one based on the whole range of ultraviolet—far infrared data.We observe a vast improvement in the estimation of photometric redshifts when far infrared data are included, compared with an approach based mainly on the optical—mid infrared range.We discuss the physical properties of our far-infrared-selected sample.We conclude that this sample consists mostly of rich in dust and young stars nearby galaxies, and, furthermore, that almost 25% of these sources are (Ultra)Luminous Infrared Galaxies.Average SEDs normalized at 90 μ m for normal galaxies (138 sources), LIRGs (30 sources), and ULIRGs (18 galaxies) show a significant shift in the peak wavelength of the dust emission, and an increasing ratio between their bolometric and dust luminosities which varies from 0.39 to 0.73. Key words Galaxies starburst galaxies SED spectral energy distribution LIRGs ULIRGs.
关键词：Galaxies ;starburst galaxies ;SED ;spectral energy distribution ;LIRGs ;ULIRGs