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The obscured mid-infrared continuum of NGC 4418: a dust- and ice-enshrouded AGN
H. W. W. Spoon, J. V. Keane, A. G. G. M. Tielens +2
We report the detection of absorption features in the 6-8 micron region superimposed on a featureless mid-infrared continuum in NGC 4418. For several of these features this is the…
Photometric redshifts and selection of high redshift galaxies in the NTT and Hubble Deep Fields
A. Fontana, S. D'Odorico, F. Poli +5
We present and compare in this paper new photometric redshift catalogs of the galaxies in three public fields: the NTT Deep Field, the HDF-N and the HDF-S. Photometric redshifts ha…
Halpha emitting galaxies and the cosmic star formation rate at z = 2.2
Alan F. M. Moorwood, Paul P. van der Werf, Jean Gabriel Cuby +1
About 10 candidate Halpha emitting galaxies at z = 2.2 have been detected in a 2.1 um narrow band imaging survey covering an area of 100 sq. arcmin including the WFPC2 and STIS fie…
A search for clusters at high redshift - II. A proto cluster around a radio galaxy at z=2.16
L. Pentericci, J. D. Kurk, H. J. A Rottgering +7
VLT spectroscopic observations of Ly alpha--excess objects in the field of the clumpy radio galaxy 1138-262 at z=2.16 have led to the discovery of 14 galaxies and one QSO at approx…
An excess of mid-IR luminous galaxies in Abell 1689?
D. Fadda, D. Elbaz, P. -A. Duc +4
We present the results of infrared observations of Abell 1689 which was observed with ISOCAM, at 6.7\mic and 15\mic, and ISOPHOT at 200\mic. The cluster galaxies detected above a s…
Search for clusters at high redshift - I. Candidate Lya emitters near 1138-262 at z=2.2
J. D. Kurk, H. J. A. Rottgering, L. Pentericci +7
Radio, optical and X-ray observations of the powerful radio galaxy PKS 1138-262 at z=2.156 have suggested that this galaxy is a massive galaxy in the center of a forming cluster. W…
The extragalactic background and its fluctuations in the far-infrared wavelengths
G. Lagache, J-L. Puget, A. Abergel +22
A Cosmic Far-InfraRed Background (CFIRB) has long been predicted that would traces the intial phases of galaxy formation. It has been first detected by Puget et al.(1996) using COB…
ISO-SWS spectra of galaxies: continuum and features
E. Sturm, D. Lutz, D. Tran +5
We present an inventory of mid-infrared spectral features detected in high resolution 2.4 to 45um ISO-SWS spectra of the galaxies M82, NGC253, Circinus, NGC1068, and the 30Doradus…
ISO-SWS spectroscopy of NGC 1068
D. Lutz, E. Sturm, R. Genzel +4
We present ISO-SWS spectroscopy of NGC 1068 for the wavelength range 2.4 to 45um, detecting a total of 36 emission lines. Most of the observed transitions are fine structure and re…