Far-infrared energy distributions of active galaxies in the local universe and beyond: From ISO to HSO

Details Far-infrared energy distributions of active galaxies in the local universe and beyond: From ISO to HSO Far-infrared energy distributions of active galaxies in the local universe and beyond: From ISO to HSO

Jul 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001esasp.460..143s&link_type=abstract

The Promise of the Herschel Space Observatory. Eds. G.L. Pilbratt, J. Cernicharo, A.M. Heras, T. Prusti, & R. Harris. ESA-SP 460

Computer Science

Galaxies: Evolution, Active, Starburst, Missions: Iso, Hso

Scientific paper

New results of the ISO photometric survey of the 12 micron active galaxy sample are presented. We address issues on the far-infrared turnover and on the different overall shape of starburst and Seyfert type 1 and type 2 galaxies. These two latter types of active galaxies have far-IR energy distributions that can be indeed explained by different inclinations of an hypothetical obscuring torus. The energy distributions of active and starburst galaxies in the Local Universe as measured by IRAS and ISO are then used to make predictions on what HSO will be able to achieve at significant redshifts. We have used the ISO photometric observations of active and starburst galaxies of the 12 micron galaxy sample to define average energy distributions of Seyfert type 1 and type 2, starburst and normal galaxies. Assuming different galaxy evolution laws, the derived energy distributions at various redshifts are then compared with the detection limits of the HSO camera arrays of PACS and SPIRE. Finally, from the mid-IR luminosity function of the Local Universe, we estimate the number of galaxies that HSO deep surveys will be able to detect.

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