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标题：Star formation and dust extinction properties of local galaxies as seen from AKARI and GALEX
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作者：A. Sakurai ; T. T. Takeuchi ; F.-T. Yuan 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：3
页码：203-211
DOI：10.5047/eps.2012.09.006
出版社：Springer Verlag
摘要：An accurate estimation of the star formation-related properties of galaxies is crucial for understanding the evolution of galaxies.In galaxies, ultraviolet (UV) light emitted by recently formed massive stars is attenuated by dust, which is also produced by star formation (SF) activity, and is re-emitted at mid- and far- infrared (IR) wavelengths.In this study, we investigate the star formation rate (SFR) and dust extinction using UV and IR data.We selected local galaxies which are detected at AKARI FIS 90 μm and matched the IRAS IIFSC z 60 μm select catalog.We measured FUV and NUV flux densities from GALEX images.We examined the SF and extinction of Local galaxies using four bands of AKARI.Then, we calculated FUV and total IR luminosities, and obtained the SF luminosity, L SF, the total luminosity related to star formation activity, and the SFR.We find that in most galaxies, L SF is dominated by L dust 20 M⊙ yr−1 is almost completely hidden by dust.Our results boast a significantly higher precision with respect to previously published works, due to the use of much larger object samples from the AKARI and GALEX all sky surveys. Key words Dust galaxies: formation galaxies: evolution stars: formation infrared ultraviolet.
关键词：Dust ;galaxies: formation ;galaxies: evolution ;stars: formation ;infrared ;ultraviolet