Prof. Dimitra Rigopoulou: Publications

Very large telescope-ISAAC near-infrared spectroscopy of ISO-selected hubble deep field south galaxies

ASTROPHYSICAL JOURNAL 537:2 (2000) L85-L89

Authors:

D Rigopoulou, A Franceschini, H Aussel, R Genzel, P van der Werf, CJ Cesarsky, M Dennefeld, S Oliver, M Rowan-Robinson, RG Mann, I Perez-Fournon, B Rocca-Volmerange

NIR Spectroscopy with the VLT of a sample of ISO selected Hubble Deep Field South Galaxies

(1999)

Authors:

D Rigopoulou, A Franceschini, R Genzel, P van der Werf, H Aussel, C Cesarsky, M Dennefeld, S Oliver, M Rowan-Robinson

A large mid-infrared spectroscopic and near-IR imaging survey of ULIRGs: their nature and evolution

(1999)

Authors:

D Rigopoulou, HWW Spoon, R Genzel, D Lutz, AFM Moorwood, QD Tran

A large mid-infrared spectroscopic and near-infrared imaging survey of ultraluminous infrared galaxies: Their nature and evolution

ASTRONOMICAL JOURNAL 118:6 (1999) 2625-2645

Authors:

D Rigopoulou, HWW Spoon, R Genzel, D Lutz, AFM Moorwood, QD Tran

An ISO survey of PAH features in Ultraluminous Infrared Galaxies

ASTR SOC P 177 (1999) 171-174

Authors:

D Lutz, R Genzel, D Rigopoulou, HWW Spoon, D Tran, AFM Moorwood

Abstract:

We have obtained ISOPHOT-S low resolution mid-infrared spectra of a sample of 60 Ultraluminous Infrared Galaxies (ULIRGs). We use the strength of the 'PAH' mid-infrared features as a discriminator between starburst and AGN activity, and to probe for evolutionary effects. Observed ratios of PAH features in ULIRGs differ slightly from those in lower luminosity starbursts. We suggest that such PAH ratio changes relate to the conditions in the interstellar medium in these galaxies, and in particular to extinction.

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