S319p.15 — The AGN/Starburst Specific Star Formation Rate using AKARI and Herschel Space Observatories

Date & Time

Aug 10th at 6:00 PM until 6:00 PM




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Author(s): Lucia Marchetti1, Stephen Serjeant1

Institution(s): 1. The Open University

AKARI and Herschel provide us with unique data set to study Star Forming Galaxies across cosmic time. Thanks to their combined observations in 14 bands between 1.7 to 500 μm, together with other multi-wavelength data, we are now able to describe in detail the SED of IR galaxies and thus their physical properties over cosmic time. In particular, different studies have been arguing the role played by AGN and BH accretion in Galaxy Formation and Evolution and how these are connected with the star formation activity in galaxies. AKARI and Herschel observations combined together provide us with our best chance to understand these phenomena by studying the emission of extragalactic sources at IR wavelengths where the bulk of AGN emission and the obscured star formation activity occur. In my talk I will describe some recent results obtained by jointly exploiting AKARI/Spitzer/Herschel/SCUBA2 data (together with a collection of redshifts and data at shorter wavelengths) in the North Ecliptic Pole field, making use of different SED fitting techniques to disentangle the AGN and SF contribution to the IR emission and comparing our estimates with model predictions and other observational results from the literature. I will then explain how future facilities such as JWST, SPICA and SKA can allow us to make progress in this type of studies.