The European Large-Area ISO Survey (ELAIS): the final band-merged catalogue

Rowan-Robinson, M. and Lari, C. and Perez-Fournon, I. and Gonzalez-Solares, E.A. and La Franca, F. and Vaccari, M. and Oliver, S. and Gruppioni, C. and Ciliegi, P. and Heraudeau, P. and Serjeant, S. and Efstathiou, A. and Babbedge, T. and Matute, I. and Pozzi, F. and Franceschini, A. and Vaisanen, P. and Afonso-Luis, A. and Alexander, D.M. and Almaini, O. and Baker, A.C. and Basilakos, S. and Barden, M. and del Burgo, C. and Bellas-Velidis, I. and Cabrera-Guerra, F. and Carballo, R. and Cesarsky, C.J. and Clements, D.L. and Crockett, H. and Danese, L. and Dapergolas, A. and Drolias, B. and Eaton, N. and Egami, E. and Elbaz, D. and Fadda, D. and Fox, M. and Genzel, R. and Goldschmidt, P. and Gonzalez-Serrano, J.I. and Graham, M. and Granato, G.L. and Hatziminaoglou, E. and Herbstmeier, U. and Joshi, M. and Kontizas, E. and Kontizas, M. and Kotilainen, J.K. and Kunze, D. and Lawrence, A. and Lemke, D. and Linden-Vornle, M.J.D. and Mann, R.G. and Marquez, I. and Masegosa, J. and McMahon, R.G. and Miley, G. and Missoulis, V. and Mobasher, B. and Morel, T. and Norgaard-Nielsen, H. and Omont, A. and Papadopoulos, P. and Puget, J.L. and Rigopoulou, D. and Rocca-Volmerange, B. and Sedgwick, N. and Silva, L. and Sumner, T. and Surace, C. and Vila-Vilaro, B. and van der Werf, P. and Verma, A. and Vigroux, L. and Villar-Martin, M. and Willott, C.J. and Carraminana, A. and Mujica, R. (2004) The European Large-Area ISO Survey (ELAIS): the final band-merged catalogue. Monthly Notices of the Royal Astronomical Society, 351 (4). pp. 1290-1306. ISSN 0035-8711. (The full text of this publication is not available from this repository)

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We present the final band-merged European Large-Area ISO Survey (ELAIS) Catalogue at 6.7, 15, 90 and 175 mum, and the associated data at U, g', r', i', Z, J, H, K and 20 cm. The origin of the survey, infrared and radio observations, data-reduction and optical identifications are briefly reviewed, and a summary of the area covered and the completeness limit for each infrared band is given. A detailed discussion of the band-merging and optical association strategy is given. The total Catalogue consists of 3762 sources. 23 per cent of the 15-mum sources and 75 per cent of the 6.7-mum sources are stars. For extragalactic sources observed in three or more infrared bands, colour-colour diagrams are presented and discussed in terms of the contributing infrared populations. Spectral energy distributions (SEDs) are shown for selected sources and compared with cirrus, M82 and Arp220 starburst, and active galactic nuclei (AGN) dust torus models. Spectroscopic redshifts are tabulated, where available. For the N1 and N2 areas, the Isaac Newton Telescope ugriz Wide Field Survey permits photometric redshifts to be estimated for galaxies and quasars. These agree well with the spectroscopic redshifts, within the uncertainty of the photometric method [similar to10 per cent in (1 + z) for galaxies]. The redshift distribution is given for selected ELAIS bands and colour-redshift diagrams are discussed. There is a high proportion of ultraluminous infrared galaxies (log(10) of 1-1000 mum luminosity L-ir > 12.22) in the ELAIS Catalogue (14 per cent of 15-mum galaxies with known z), many with Arp220-like SEDs. 10 per cent of the 15-mum sources are genuine optically blank fields to r' = 24: these must have very high infrared-to-optical ratios and probably have z > 0.6, so are high-luminosity dusty starbursts or Type 2 AGN. Nine hyperluminous infrared galaxies (L-ir > 13.22) and nine extremely red objects (EROs) (r - K > 6) are found in the survey. The latter are interpreted as ultraluminous dusty infrared galaxies at z similar to 1. The large numbers of ultraluminous galaxies imply very strong evolution in the star formation rate between z = 0 and 1. There is also a surprisingly large population of luminous (L-ir > 11.5), cool (cirrus-type SEDs) galaxies, with L-ir L-opt > 0, implying A(V) > 1.

Item Type: Article
Additional information: 53 BLACKWELL PUBLISHING LTD 834PQ
Uncontrolled keywords: stars : formation; galaxies : evolution; galaxies : starburst; cosmology : observations; infrared : galaxies
Subjects: Q Science
Divisions: Faculties > Science Technology and Medical Studies > School of Physical Sciences
Depositing User: Maggie Francis
Date Deposited: 28 May 2009 18:55
Last Modified: 14 Jan 2010 14:47
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