Galaxy formation and evolution

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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
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A large-scale bulk flow of galaxy clusters

ASTROPHYSICAL JOURNAL 512:2 (1999) L79-L82

Authors:

MJ Hudson, RJ Smith, JR Lucey, DJ Schlegel, RL Davies
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A serendipitous search for hy-redshift Lyα emission:: A case study of two sources at z ≃ 3

HY-REDSHIFT UNIVERSE: GALAXY FORMATION AND EVOLUTION AT HIGH REDSHIFT 193 (1999) 521-524

Authors:

C Manning, D Stern, H Spinrad, AJ Bunker
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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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Circumnuclear Keplerian disks in galaxies

ASTR SOC P 182 (1999) 229-230

Authors:

JG Funes, F Bertola, M Cappellari, EM Corsini, A Pizzella, JCV Beltran
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