ISO Surveys of a Dusty Universe

ISO Surveys of a Dusty Universe

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Many of the ISO observers who assembled for this workshop at Ringberg c- tle met for the third time in the Bavarian Alps. At two previous meetings in 1989 and 1990 surveys were only a minor topic. At that time we were excited by the discoveries of the IRAS survey mission and wanted to follow it up with pointed observations using an observatory telescope equipped with versatile instruments. With the rapid development of detector arrays and stimulated by ISOa€™s Observing Time Allocation Committee, however, surveys eventually became an issue for the upcoming mission. In a review paper on a€œInfrared S- veys - the Golden Age of Explorationa€ given at an IAU meeting in 1996, Chas Beichman already mentioned that there are ISO surveys. They were at the bottom of his hit list, while the winners were future space missions (Planck, SIRTF, etc. ) and ground-based surveys in preparation (Sloan, 2MASS, DE- NIS, etc. ). He organized his table according to the relative explorable volume, calculated from the solid angle covered on the sky and the maximum distance derived from the detection sensitivity. Clearly, with this ?gure of merit, ISO, as a pointed observatory, is rated low. Applying the classical de?nition of a survey, i. e. to search in as large a volume as possible for new or rare objects and/or study large numbers of objects of various classes in order to obtain statistical properties, ISO was indeed limited.... Alain Omont and the ISOGAL Collaboration Institut da#39;Astrophysique de Paris, CNRS, 98bis BD Arago, 75014 Paris Abstract. ... visible in 7-15pm colour- magnitude diagrams in the galactic disk. ... Alard, T. August, J. Blommaert, E. Copet, S. Ganesh, D. tha, M. Perault, F. Schuller, M. Schultheis, G. Simon, J. van Loon and M.

Title:ISO Surveys of a Dusty Universe
Author: D. Lemke, M. Stickel, K. Wilke
Publisher:Springer Science & Business Media - 2000-06-21

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