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Published online by Cambridge University Press: 30 March 2011
With advancement of infrared space telescopes during the past decade, infrared wavelengthregime has been a focal point to study various properties of galaxies with respect toevolution of galaxies. Polycyclic Aromatic Hydrocarbons (PAHs) have emerged as one of themost important features since these features dominate the mid-infrared spectra ofgalaxies. These PAH features provide a great handle to calibrate star formation rates anddiagnose ionized states of grains. However, the PAH 3.3 μm feature hasnot been studied as much as other PAH features since it is weaker than others and residesoutside of Spitzer capability, although it will be the only PAH feature accessible by JWSTfor high-z galaxies. AKARI mJy Unbiased Survey of Extragalactic Sources in 5MUSES (AMUSES)intends to take advantage of AKARI capability of spectroscopy in the2 ~ 5 μm to provide an unbiased library of 44 samplegalaxies selected from a parent sample of 5MUSES, one of Spitzer legacy projects. Forthese 3.6 μm flux limited sample galaxies whose redshifts range between0 < z < 1, AMUSES will calibrate PAH 3.3μm as a star formation rate (SFR) indicator while measuring ratiosbetween PAH features. We present preliminary results of AMUSES.