Galaxy formation and evolution

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ISO spectroscopy of luminous galaxies

ESA SP PUBL 419 (1997) 143-148

Authors:

D Lutz, R Genzel, E Sturm, D Kunze, HWW Spoon, D Rigopoulou, M Thornley, T Alexander, AFM Moorwood, A Sternberg, T de Graauw

Abstract:

Spectroscopy with SWS and ISOPHOT-S has opened a new window for studies of the nuclei of external galaxies. We present selected results of observations of starburst galaxies and active galactic nuclei and discuss the mid-infrared extinction law. The flux ratio of high and low excitation fine structure lines and the strength of the 'PAH' emission features are mid-infrared spectroscopic tools that allow to distinguish between starburst and AGNs in heavily obscured galactic nuclei. We have verified these tools on template starburst and AGN galaxies and apply them to a sample of ultraluminous infrared galaxies, finding that most of them are predominantly powered by starburst activity.
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ISO-SWS Results on Ultraluminous IRAS Galaxies

Chapter in Quasar Hosts, Springer Nature (1997) 242-247
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Infrared to Millimeter Spectroscopy and Imaging of Active Galactic Nuclei

International Astronomical Union Colloquium Cambridge University Press (CUP) 159 (1997) 312-324

Authors:

R Genzel, D Lutz, E Sturm, L Tacconi, N Thatte, A Sternberg
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Millimetre line CO (2->1) observations of a complete sample of AGN

ASTRONOMY & ASTROPHYSICS 327:2 (1997) 493-502

Authors:

D Rigopoulou, I Papadakis, A Lawrence, M Ward
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NIR imaging spectroscopy of IRAS F10214+4724: Evidence for a starburst region around an AGN at z=2.3

REV MEX AST ASTR 6 (1997) 48-51

Authors:

H Kroker, R Genzel, A Krabbe, LE TacconiGarman, M Tecza, N Thatte

Abstract:

We report 1'' K-band imaging spectroscopy of the z=2.284 galaxy IRAS F10214+4724. We find that the rest-frame H alpha and [N II] emission have different spatial extents. Furthermore, we detect broad (Delta upsilon(FWZP)approximate to 3500 km s(-1)) H alpha emission. We conclude that F10214+4724 is a very luminous gravitationally lensed galaxy, which intrinsically contains both a type 1 AGN and a more extended star-forming disk. The AGN and circumnuclear star formation both contribute significantly to the total luminosity of similar to 10(13)L(circle dot).
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