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Final analysis of ELAIS 15-μm observations: method, reduction and catalogue |
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| Authors: | M. Vaccari,C. Lari,L. Angeretti,D. Fadda,C. Gruppioni,F. Pozzi,O. Prouton,H. Aussel,T. Babbedge,P. Ciliegi,A. Franceschini,E. Gonzalez-Solares,F. La Franca,S. Oliver,I. Perez-Fournon,M. Rowan-Robinson,S. Serjeant, P. Vä isä nen |
| Affiliation: | Astrophysics Group, Blackett Laboratory, Imperial College, Prince Consort Road, London, SW7 2AZ;Dipartimento di Astronomia, Universitàdi Padova, Vicolo dell'Osservatorio 2, I-35122, Padova, Italy;CISAS "G. Colombo", Universitàdi Padova, Via Venezia 15, I-35131, Padova, Italy;Istituto di Radioastronomia, CNR, Via Gobetti 101, I-40122, Bologna, Italy;Dipartimento di Astronomia, Universitàdi Bologna, Via Ranzani 1, I-40127, Bologna, Italy;Spitzer Science Centre, MC 220-6, 1200 East California Boulevard, Pasadena, CA 91125, USA;Osservatorio Astronomico di Padova, INAF, Vicolo dell'Osservatorio 5, I-35122, Padova, Italy;Osservatorio Astronomico di Bologna, INAF, Via Ranzani 1, I-40127, Bologna, Italy;Institute for Astronomy, University of Hawaii, 2680 Woodlawn Drive, Honolulu, HI 96822, USA;Institute of Astronomy, University of Cambridge, The Observatories, Madingley Road, Cambridge, CB3 0HA;Dipartimento di Fisica, Universitàdi "Roma Tre", Via della Vasca Navale 84, I-00146, Roma, Italy;Astronomy Centre, Department of Physics &Astronomy, University of Sussex, Brighton, BN1 9QJ;Instituto de Astrofísica de Canarias, Via Lactea S/N, E-38200, La Laguna, Spain;Centre for Astrophysics and Planetary Science, School of Physical Sciences, University of Kent, Canterbury, Kent, CT2 7NZ;European Southern Observatory, Alonso de Cordova 3107, Casilla 19001 Santiago 19, Vitacura, Santiago, Chile;Observatory, PO Box 14, FIN-00014, University of Helsinki, Helsinki, Finland |
| Abstract: | We present the final analysis of the European Large Area Infrared Space Observatory ( ISO ) Survey (ELAIS) 15-μm 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 0.5–100 mJy flux range and over an area of 10.85 deg 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. |
| Keywords: | methods: data analysis catalogues galaxies: active galaxies: evolution galaxies: formation infrared: galaxies |