Title: ISOGAL: A deep survey of the obscured inner Milky Way with ISO at 7 mu m and 15 mu m and with DENIS in the near-infrared
Authors: Omont, A ×
Gilmore, GF
Alard, C
Aracil, B
August, T
Baliyan, K
Beaulieu, S
Begon, S
Bertou, X
Blommaert, Joris
Borsenberger, J
Burgdorf, M
Caillaud, B
Cesarsky, C
Chitre, A
Copet, E
de Batz, B
Egan, MP
Egret, D
Epchtein, N
Felli, M
Fouque, P
Ganesh, S
Genzel, R
Glass, IS
Gredel, R
Groenewegen, Martin
Guglielmo, F
Habing, HJ
Hennebelle, P
Jiang, B
Joshi, UC
Kimeswenger, S
Messineo, M
Miville-Deschenes, MA
Moneti, A
Morris, M
Ojha, DK
Ortiz, R
Ott, S
Parthasarathy, M
Perault, M
Price, SD
Robin, AC
Schultheis, M
Schuller, F
Simon, G
Soive, A
Testi, L
Teyssier, D
Tiphene, D
Unavane, M
van Loon, JT
Wyse, R #
Issue Date: 2003
Publisher: E D P SCIENCES
Series Title: Astronomy & Astrophysics vol:403 issue:3 pages:975-992
Abstract: The ISOGAL project is an infrared survey of specific regions sampling the Galactic Plane selected to provide information on Galactic structure, stellar populations, stellar mass-loss and the recent star formation history of the inner disk and Bulge of the Galaxy. ISOGAL combines 7 and 15 mum ISOCAM observations - with a resolution of 6 0 0 at worst - with DENIS IJK(s) data to determine the nature of the sources and the interstellar extinction. We have observed about 16 square degrees with a sensitivity approaching 10-20 mJy, detecting similar to10(5) sources, mostly AGB stars, red giants and young stars. The main features of the ISOGAL survey and the observations are summarized in this paper, together with a brief discussion of data processing and quality. The primary ISOGAL products are described briefly ( a full description is given in Schuller et al. 2003): viz. the images and the ISOGAL - DENIS five-wavelength point source catalogue. The main scientific results already derived or in progress are summarized. These include astrometrically calibrated 7 and 15 mum images, determining structures of resolved sources; identification and properties of interstellar dark clouds; quantification of the infrared extinction law and source dereddening; analysis of red giant and ( especially) AGB stellar populations in the central Bulge, determining luminosity, presence of circumstellar dust and mass-loss rate, and source classification, supplemented in some cases by ISO/CVF spectroscopy; detection of young stellar objects of diverse types, especially in the inner Bulge with information about the present and recent star formation rate; identification of foreground sources with mid-IR excess. These results are the subject of about 25 refereed papers published or in preparation.
ISSN: 1432-0746
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Institute of Astronomy
× corresponding author
# (joint) last author

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