AKARI Mid-Infrared Spectroscopic Views of Galaxies out to z˜ 0.5

Details AKARI Mid-Infrared Spectroscopic Views of Galaxies out to z˜ 0.5 AKARI Mid-Infrared Spectroscopic Views of Galaxies out to z˜ 0.5

Oct 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aspc..399..292o&link_type=abstract

Panoramic Views of Galaxy Formation and Evolution ASP Conference Series, Vol. 399, proceedings of the conference held 11-16 Dece

Astronomy and Astrophysics

Astronomy

Scientific paper

It has been realized since the Infrared Space Observatory (ISO) that there are numerous faint galaxies seen at mid-infrared (MIR), and they are so numerous that strong evolution in luminosity and/or space density at z=0.3-2 has been discussed. It has also been realized that PAH (polycyclic aromatic hydrocarbon) emission contributes significantly to the observed MIR flux. Since the PAH emission is known to trace star-formation activity, investigation on their MIR activity and especially on their strong PAH emission could be essential in understanding galaxy evolution at mid-z universe (z=0.3-2).
The InfraRed Camera (IRC) onboard AKARI is very unique and allows sensitive wide-field slit-less spectroscopic surveys over wide wavelength ranges at NIR and MIR (2-26μm). To exploit this unique capability, we have been conducting a blank-sky deep MIR slit-less spectroscopy survey, the SPICY project, to provide an excellent sample of faint MIR galaxies for examining galaxy evolution at z ˜< 0.5. The main benefits of this survey are direct determination of redshift and target activity (by analyzing spectral features), and the fair sampling of objects (with little selection biases).

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