Contents of: VI/111/./abstract/MROWANRO_ELAIS_C6.abs

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We propose to carry out photometry at 4-200 mu on 300 sources
selected from the ELAIS (European Large Area ISO Survey), and to
carry out a survey of 8 sq deg of the area at 6.7 mu.  The ELAIS
ELAIS survey (proposal SURVEY_1,_2,_3) was awarded 215 hours of
Open Time in the First ISO AO to survey 15 sq deg of sky at 15
and 90 mu.  The survey is well under way and 9 of the planned 30
rasters have been completed.  The sensitivity achieved at 15 mu,
2 mJy (5-sigma), is close to that predicted.  At 90 mu the
sensitivity appears to be about 50 mJy.  At both wavelengths
numbers of sources are detected after elimination of cosmic
rays and other artefacts.  From our very preliminary analysis
we detect about 50 sources per raster at 15 mu, and about 30
sources per raster at 90 mu.  Our final data analysis is expected
to yield many more sources.
We propose to enhance significantly the scientific value of the
ELAIS survey by carrying out 4-200 mu photometry on a substantial
sample of ELAIS sources.  Our proposal is to carry out photometry
at 7 wavelengths on 300 ELAIS sources, representing the most
reliable sources detected to date in the 9 rasters analyzed so far.
Photometric data at 4-200 mu will allow detailed modelling of
the infrared emission from the ELAIS sources using accurate
radiative transfer codes.  For galaxies the relative role of
starbursts and dusty tori around AGN can be evaluated and the
bolometric luminosity determined.  For stars with circumstellar
dust shells, the optical depth and mass-loss rate can be measured.
In the areas for which 15 and 90 mu data has not yet been received
we propose to survey at 6.7 mu, which will greatly enhance
our ability to distinguish between source types.  This will also
fill in a major gap in our knowledge of the infrared sky
between 2 and 12 mu.