Back to Volume
Paper: Power-law Relations between Warm and Cold Dust Emission Intensities within the Galaxies of M81 and M101 Obtained with AKARI Far-Infrared Surveyor (FIS)
Volume: 418, AKARI, a Light to Illuminate the Misty Universe
Page: 487
Authors: Suzuki, T.; Kaneda, H.; Onaka, T.; Nakagawa, T.; Shibai, H.
Abstract: We investigate the relation between the surface densities of the gas and stars in various regions in the disks of M101 and M81 to investigate the Kennicutt-Schmidt law. The galaxies were observed with the Far-Infrared Surveyor (FIS) onboard AKARI at central wavelengths of 65, 90, 140 and 160 μm. The spectral energy distribution of the whole galaxies shows the presence of a cold dust component in addition to a warm dust component. The cold and warm dust components can be related to the gas mass and newly-formed stellar mass, respectively, whose relation in various regions shows a power-law correlation. There are significant differences in the power-law index between outer arms with four giant HII regions and inner arms in M101, while the power-law index for spiral arms of M81 is similar to that for inner arms in M101.
Back to Volume