We performed Principle Component Analysis (PCA) over 264 galaxies in the IRAS Revised Bright Galaxy Sample (Sanders et al., 2003) using 12, 25, 60 and 100 μm ux data observed by IRAS and 9, 18, 65, 90 and 140 μm ux data observed by AKARI. We found that (i)the first principle component was largely contributed by infrared to visible ux ratio, (ii)the second principal component was largely contributed by the ux ratio between IRAS and AKARI, (iii)the third principle component was largely contributed by infrared colors.

ABSTRACT
1. INTRODUCTION
2. METHOD
    2.1. Sample Selection
    2.2. Principal Component Analysis
3. RESULTS
4. DISCUSSION
REFERENCES

• Shunsuke Baba(Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency/Department of Physics, Graduate School of Science, The University of Tokyo)
• Kenichi Yano(Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency/Department of Physics, Graduate School of Science, The University of Tokyo)
• Mai Shirahata(National Astronomical Observatory of Japan)
• Naoki Isobe(Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency)
• Takao Nakagawa(Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency)
• Chihiro Kochi(Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency/Department of Physics, Graduate School of Science, The University of Tokyo)