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| Paper: |
Properties of PAH Emission from Galaxies at z < 0.5 from MIR Spectroscopic Survey of AKARI |
| Volume: |
418, AKARI, a Light to Illuminate the Misty Universe |
| Page: |
329 |
| Authors: |
Ohyama, Y.Wada, T.; Matsuhara, H.; Takagi, T.; AKARI SPICY team; the AKARI NEP team |
| Abstract: |
The PAH emission in the mid-infrared wavelengths is thought to be a good star formation rate indicator, which is less sensitive to the effect of dust extinction compared to the tracers in the UV/optical wavelengths. The robustness of the PAH/SFR relationship, however, is still not be established well because of lack of unbiased, large number of spectral samples of PAH emission from galaxies.
We will present the initial results from the unbiased slit-less spectroscopic survey of galaxies (SPICY) in the near- and mid-infrared wavelengths by AKARI. The survey is conducted by the Infrared Camera (IRC) onboard AKARI in the slit-less spectroscopy mode (R ≈ 50). We have covered over 1000 sq. arcmin. within the AKARI deep field toward the North Ecliptic Pole (NEP) with a sensitivity down to 1 mJy (5 sigma) for continuum at 9 μm, and obtained more than 100 samples of mid-infrared spectra of galaxies with good S/N ratio. We will discuss property of the PAH features of these galaxies. |
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