First ISOCAM images of the Milky Way
M. Pérault A. Omont G. Simon P. Séguin D. Ojha J. Blommaert M. Felli G. Gilmore F. Guglielmo H. Habing S. Price A. Robin B. de Batz C. Cesarsky D. Elbaz N. Epchtein P. Fouqué S. Guest D. Levine A. Pollock T. Prusti R. Siebenmorgen L. Testi D. Tiphène
Abstract:
ISOGAL is a 15 
m ISOCAM survey of 
deg² in
the Galactic Plane interior to 
. In combination
with IJK data from the near-infrared southern sky survey DENIS, the
ISO images allow the first detailed study of stellar populations throughout
the inner Galaxy. We present preliminary results from a test observation
at 
with 6" pixels and
completeness limit 8mJy. Of the 
sources deg-2 detected, about half are
KM giants, seen through extinction of up to A 
, while
most of the remainder are probably dusty young stars. Although away from
bright IRAS regions, the field displays spectacular
emission features, and, unexpectedly, a number of regions which are
optically thick at 15 m. The dark regions are presumably dense
filaments with A 
.
Keywords:
The Galaxy: stellar content -
Interstellar medium: general -
Interstellar medium: dust, extinction -
Infrared: galaxies -
Infrared: stars