We present results of AKARI/IRC near-infrared (NIR) slit-spectroscopy (2.5{5.0 m, R  100) of Galactic sources, focusing on ice absorption features. We investigate the abundance of H2O and CO2 ices and other ice species (CO and XCN ices) along lines of sight towards Galactic Hii regions, massive YSOs, and infrared diuse sources. Even among those dierent kinds of astronomical objects, the abundance ratio of CO2 to H2O ices does not vary signicantly, suggesting that the pathway to CO2 ice formation driven by UV irradiation is not eective at least among the present targets.

ABSTRACT
1. AKARI NIR SLIT-SPECTROSCOPY
2. RESULTS
3. SUMMARY
REFERENCES

• Tamami I. Mori(Department of Astronomy, Graduate School of Science, The University of Tokyo)
• Takashi Onaka(Department of Astronomy, Graduate School of Science, The University of Tokyo)
• Itsuki Sakon(Department of Astronomy, Graduate School of Science, The University of Tokyo)
• Ryou Ohsawa(Department of Astronomy, Graduate School of Science, The University of Tokyo/Institute of Astronomy, Graduate School of Science, The University of Tokyo)
• Hidehiro Kaneda(Graduate School of Science, Nagoya University)
• Mitsuyoshi Yamagishi(Graduate School of Science, Nagoya University)
• Yoko Okada(I. Physikalisches Institut, Universitat zu Koln)
• Masahiro Tanaka(Astronomical Institute, Graduate School of Science, Tohoku University)
• Takashi Shimonishi(Department of Earth and Planetary Sciences, Graduate School of Science, Kobe University)