AKARI’s infrared view on nearby stars Using AKARI Infrared Camera All-Sky Survey, 2MASS, and Hipparcos catalogs

Context. The AKARI, a Japanese infrared space mission, has performed an All-Sky Survey in six infrared-bands from 9 to 180 µm with higher spatial resolutions and better sensitivities than the Infrared Astronomical Satellite (IRAS). Aims. We investigate the mid-infrared (9 and 18 µm) point source catalog (PSC) obtained with the Infrared Camera (IRC) on board the AKARI, in order to understand the infrared nature of the known objects, as well as to identify previously unknown objects. Methods. Color-color diagrams and a color-magnitude diagram have been plotted, using the AKARI-IRC PSC and other available all-sky survey catalogs. We combine the Hipparcos astrometric catalog, and the 2MASS all-sky survey catalog with the AKARI-IRC PSC. We further searched literatures and SIMBAD astronomical database for object types, spectral types and luminosity classes. We identify the locations of representative stars/objects on color-magnitude and color-color diagram scheme. The properties of unclassi-fied sources can be inferred on the basis of their locations on these diagrams