The Akari Project: Legacy and Data Processing Status

Abstract

This paper provides an overview of the AKARI mission, which was the first Japanese satellite dedicated to infrared astronomy. The AKARI satellite was launched in 2006, and performed both an all-sky survey and pointed observations during its 550 days in the He-cooled mission phases (Phases 1 and 2). After the He ran out, we continued near-infrared observations with mechanical cryocoolers (Phase 3). Due to a failure of its power supply, AKARI was turned off in 2011.The AKARI data are unique in terms of the observed wavelengths as well as the sky coverage, and provide a unique legacy resource for many astronomical studies. Since April 2013, a dedicated new team has been working to refine the AKARI data processing. The goal of this activity is to provide processed datasets for most of the AKARI observations in a Science Ready form, so that more users can utilize the AKARI data in their astronomical research. The data to be released will include revised All-Sky Point Source Catalogues, All-Sky Image Maps, as well as high-sensitivity images and spectra obtained by pointed observations. We expect that the data will be made public by in the Spring of 2016.

Space missions for astronomy and astrophysics in Korea: past, present, and future

“…MPs and OTs had separate calls for the Phase 3 observations. AKARI made about 5500 pointings of imaging and spectroscopic observations with FIS and IRC during Phases 1 and 2, and 12,600 pointing observations during the Phase 3 (near-infrared only), in addition to the all-sky survey observations [67]. Initially, the all-sky survey was planned to be done only in far-infrared channels, but surveys in two midinfrared channels at 9 and 18 m were also done because the data could be simultaneously collected in IRC channels during the scanning observations [68].…”

“…The all-sky survey covered more than 96% of the entire sky at six wavebands: 9, 18, 65, 90, 140, and 160 μ m [67]. The data products of the all-sky survey include the AKARI All-Sky Survey Bright Source Catalogue [69,70] and the AKARI IRC All-Sky Survey Catalogue 4 .…”

Space Missions for Astronomy and Astrophysics in Korea: Past, Present, and Future

“…There were separate calls for MPs and OTs for the Phase 3 observations. AKARI made about 5500 pointings of imaging and spectroscopic observations with FIS and IRC during Phases 1 and 2, and 12,600 pointing observations during the Phase 3 (near-infrared only), in addition to the all-sky survey observations [67]. Initially, the all-sky survey was planned to be done only in far-infrared channels, but surveys in two mid-infrared channels at 9 and 18 µm were also done since the data could be simultaneously collected in IRC channels during the scanning observations [68].…”

“…The all-sky survey covered more than 96% of the entire sky at 6 wavebands: 9, 18, 65, 90, 140, and 160 µm [67]. The data products of the all-sky survey include AKARI All-Sky Survey Bright Source Catalogue [69,70] and AKARI IRC All-Sky Survey Catalogue [130].…”