We present the properties of dust and the near-infrared spectral features in nearby early-type galaxies. The properties of dust are obtained from the AKARI far-infrared all-sky survey diffuse map. The AKARI/IRC is used for the near-infrared spectra. We improve spectral data with the new dark subtraction method on the basis of the knowledge acquired in our laboratory experiments of the engineering-model detector for the IRC. We have succeeded in fitting the continuum by a power-law function and detecting CO and SiO absorption features in early-type galaxy spectra. Comparing the properties of dust and near-infrared spectral features, we find that the power-law slope depends on dust temperature, but not on the dust mass, which suggests that low-luminosity AGNs may contribute to the changes in the power-law slope and dust temperature.

ABSTRACT
1. INTRODUCTION
2. AKARI FAR-INFRARED MAP
3. AKARI NEAR-INFRARED SPECTRA
4. DISCUSSION
REFERENCES

• T. MORI(Graduate School of Science, Nagoya University)
• S. OYABU(Graduate School of Science, Nagoya University)
• H. KANEDA(Graduate School of Science, Nagoya University)
• D. ISHIHARA(Graduate School of Science, Nagoya University)
• M. YAMAGISHI(Graduate School of Science, Nagoya University)