The AKARI far-infrared all-sky survey maps
Nakagawa, Takao; Doi, Yasuo; Takita, Satoshi; Arimatsu, Ko; Ootsubo, Takafumi; Matsuura, Shuji; White, Glenn J.; Komugi, Shinya; Ikeda, Norio; Kawada, Mitsunobu; Etxaluze, Mireya; Kitamura, Yoshimi; Tanaka, Masahiro; Hattori, Makoto; Morishima, Takahiro; Chinone, Yuji; Kato, Daisuke; Cypriano, Elysandra F.
Japan, United Kingdom, Brazil
Abstract
We present a far-infrared all-sky atlas from a sensitive all-sky survey using the Japanese AKARI satellite. The survey covers > 99% of the sky in four photometric bands centred at 65 μm, 90 μm, 140 μm, and 160 μm, with spatial resolutions ranging from 1' to 1{^''.}5. These data provide crucial information on the investigation and characterisation of the properties of dusty material in the interstellar medium (ISM), since a significant portion of its energy is emitted between ∼ 50 and 200 μm. The large-scale distribution of interstellar clouds, their thermal dust temperatures, and their column densities can be investigated with the improved spatial resolution compared to earlier all-sky survey observations. In addition to the point source distribution, the large-scale distribution of ISM cirrus emission, and its filamentary structure, are well traced. We have made the first public release of the full-sky data to provide a legacy data set for use in the astronomical community.