The Far-Infrared Properties of Spatially Resolved AKARI Observations
Woong-Seob Jeong, Takao Nakagawa, Issei Yamamura, Chris P. Pearson, Richard S. Savage, Hyung Mok Lee, Hiroshi Shibai, Sin'itirou Makiuti, Hajime Baba, Dave Clements, Yasuo Doi, Elysandora Figueredo, Tomotsugu Goto, Sunao Hasegawa, Mitsunobu Kawada, Akiko Kawamura, Do Kester
TL;DR
This paper presents spatially resolved AKARI observations of IRAS sources, revealing flux measurement discrepancies, resolving sources into multiple components, and identifying potential new sources, thereby improving infrared source characterization.
Contribution
It introduces the use of AKARI's spatially resolved data to verify and refine IRAS flux measurements and discover new sources.
Findings
AKARI observations resolve IRAS sources into multiple components.
Flux measurements from IRAS may be over or underestimated due to background effects.
Potential new AKARI sources were identified.
Abstract
We present the spatially resolved observations of IRAS sources from the Japanese infrared astronomy satellite AKARI All-Sky Survey during the performance verification (PV) phase of the mission. We extracted reliable point sources matched with IRAS point source catalogue. By comparing IRAS and AKARI fluxes, we found that the flux measurements of some IRAS sources could have been over or underestimated and affected by the local background rather than the global background. We also found possible candidates for new AKARI sources and confirmed that AKARI observations resolved IRAS sources into multiple sources. All-Sky Survey observations are expected to verify the accuracies of IRAS flux measurements and to find new extragalactic point sources.
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