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.
Instrument
CAM01
Temporal Coverage
1997-05-22T06:55:50Z/1997-11-13T17:47:25Z
Version
1.0
Mission Description
The Infrared Space Observatory (ISO) was the worlds first true orbiting infrared observatory. Equipped with four highly-sophisticated and versatile scientific instruments, it was launched by Ariane in November 1995 and provided astronomers world-wide with a facility of unprecedented sensitivity and capabilities for a detailed exploration of the Universe at infrared wavelengths.
European Space Agency, ROWAN-ROBINSON et al., 1999, 'PHOTOMETRIC FOLLOW-UP OF THE ELAIS SURVEY AND EXTENSION OF THE SURVEY TO 6.7 MICRONS', 1.0, European Space Agency, https://doi.org/10.5270/esa-52r3fa1
