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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…
The location of the dense and ionized gas in the NGC 2023 PDR
F. Wyrowski, C. M. Walmsley, W. M. Goss +1
The VLA and the BIMA array were used to obtain high resolution (10-20") observations of C+, traced by the C91a recombination line at 8.6 GHz, and the dense molecular gas, traced by…
Infrared Observations of Hot Gas and Cold Ice toward the Low Mass Protostar Elias 29
A. C. A. Boogert, A. G. G. M. Tielens, C. Ceccarelli +5
We have obtained the full 1-200 um spectrum of the low luminosity (36 Lsun) Class I protostar Elias 29 in the Rho Ophiuchi molecular cloud. It provides a unique opportunity to stud…
ISO Spectroscopy of the Young Bipolar Nebulae S106 IR and Cep A East
M. E van den Ancker, A. G. G. M. Tielens, P. R Wesselius
We present the results of ISO SWS and LWS grating scans towards the embedded Young Stellar Objects (YSOs) S106 IR and Cep A East. Emission from the pure rotational lines of H2 and…
Mid-infrared ISO spectroscopy of NGC 4945
H. W. W. Spoon, J. Koornneef, A. F. M. Moorwood +2
We have observed the central region of the nearby starburst galaxy NGC4945 with the mid-infrared spectrometers SWS and PHT-S aboard ISO. We do not find any evidence for the existen…
Revealing the Photodissociation Region: Hubble Space Telescope/NICMOS Imaging of NGC 7027
William B. Latter, Aditya Dayal, John H. Bieging +4
We report results from a Hubble Space Telescope (HST) and Near-Infrared Camera and Multiobject Spectrometer (NICMOS) program to study the distribution of hot neutral (molecular hyd…