Final analysis of ELAIS 15-mum observations: method, reduction and catalogue

Vaccari, M.; Lari, C.; Angeretti, L.; Fadda, D.; Gruppioni, C.; Pozzi, F.; Prouton, O.; Aussel, H.; Babbedge, T.; Ciliegi, P.; Franceschini, A.; Gonzalez-Solares, E.; La Franca, F.; Oliver, S.; Perez-Fournon, I.; Rowan-Robinson, M.; Serjeant, S. and Väisänen, P. (2005). Final analysis of ELAIS 15-mum observations: method, reduction and catalogue. Monthly Notices of the Royal Astronomical Society, 358(2) pp. 397–418.

DOI: https://doi.org/10.1111/j.1365-2966.2005.08773.x

URL: http://arxiv.org/abs/astro-ph/0404315

Abstract

We present the final analysis of the European Large Area Infrared Space Observatory (ISO) Survey (ELAIS) 15-mum observations, carried out with the ISO Camera (ISOCAM) instrument on board the ISO.
The data-reduction method, known as the Lari Method, is based on a mathematical model of the behaviour of the detector and was specifically designed for the detection of faint sources in ISOCAM/ISO Photopolarimeter (ISOPHOT) data. The method is fully interactive and leads to very reliable and complete source lists.
The resulting catalogue includes 1923 sources detected with signal-to-noise ratio of >5 in the 0.5-100mJy flux range and over an area of 10.85deg2 split into four fields, making it the largest non-serendipitous extragalactic source catalogue obtained to date from the ISO data.
This paper presents the concepts underlying the data-reduction method together with its latest enhancements. The data-reduction process, the production and basic properties of the resulting catalogue are discussed. The catalogue quality is assessed by means of detailed simulations, optical identifications and comparison with previous analyses.

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