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Star Formation and AGN activity in Galaxies classified using the 1.6 {μ}m Bump and PAH features at z = 0.4-2

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arxiv 1112.6273 v1 pith:OGWHUZG2 submitted 2011-12-29 astro-ph.CO

Star Formation and AGN activity in Galaxies classified using the 1.6 {\mu}m Bump and PAH features at $z = 0.4-2$

classification astro-ph.CO
keywords galaxiesstar-formingactivityakarifeaturesformationstarstudied
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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abstract

We have studied the star-formation and AGN activity of massive galaxies in the redshift range $z=0.4-2$, which are detected in a deep survey field using the AKARI InfraRed (IR) astronomical satellite and {\em Subaru} telescope toward the North Ecliptic Pole (NEP). The AKARI/IRC Mid-InfraRed (MIR) multiband photometry is used to trace their star-forming activities with the Polycyclic-Aromatic Hydrocarbon (PAH) emissions, which is also used to distinguish star-forming populations from AGN dominated ones and to estimate the Star Formation Rate (SFR) derived from their total emitting IR (TIR) luminosities. In combination with analyses of their stellar components, we have studied the MIR SED features of star-forming and AGN-harboring galaxies.

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