7 papers · 1 filter
Silicate emission in Orion
D. Cesarsky, A. P. Jones, J. Lequeux +1
We present mid-infrared spectro-imagery and high-resolution spectroscopy of the Orion bar and of a region in the Orion nebula. These observations have been obtained in the Guarante…
ISO observations of the reflection nebula Ced 201: evolution of carbonaceous dust
D. Cesarsky, J. Lequeux, C. Ryter +1
We present spectrophotometric imaging mid-IR observations of the reflection nebula Ced201. Ced201 is a part of a molecular cloud illuminated by a B9.5V star moving through it at mo…
Mid-IR and Far-UV observations of the star-forming ring of M 31
L. Pagani, J. Lequeux, D. Cesarsky +4
We present mid-IR images of a 15'x15' field in the south-west part of the Andromeda galaxy M 31 obtained with the ISOCAM camera on board ISO. We also present a 20" resolution far-U…
NGC 5907 revisited: a stellar halo formed by cannibalism?
J. Lequeux, F. Combes, M. Dantel-Fort +3
We report on further observations of the luminous halo of NGC 5907. New V, I and B deep photometry confirms the existence of an extended stellar halo redder than the disk. Our data…
HST study of Lyman-alpha emission in star-forming galaxies: the effect of neutral gas flows
D. Kunth, J. M. Mas-Hesse, E. Terlevich +3
We present high dispersion HST GHRS UV spectroscopic observations of 8 HII galaxies covering a wide range of metallicities and physical properties. We have found Lyalpha emission i…
Evidences for an expanding shell in the Blue Compact Dwarf Galaxy Haro 2
F. Legrand, D. Kunth, J. M. Mas-Hesse +1
Long-slit observations of the blue compact galaxy Haro 2 have been performed to detect the Halpha emission originating in the partially ionized wind outflowing at 200 km/s, that ha…