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The ESO-Spitzer Imaging extragalactic Survey (ESIS) I: WFI B,V,R deep observations of ELAIS-S1 and comparison to Spitzer and GALEX data | | S. Berta
; S. Rubele
; A. Franceschini
; E.V. Held
; L. Rizzi
; C.J. Lonsdale
; T.H. Jarrett
; G. Rodighiero
; S.J. Oliver
; J.E. Dias
; H.J. Buttery
; F. Fiore
; F. La Franca
; S. Puccetti
; F. Fang
; D. Shupe
; J. Surace
; C. Gruppioni
; | | Date: |
11 Feb 2006 | | Abstract: | The ESO-Spitzer extragalactic Imaging Survey (ESIS) is the optical follow up of the Spitzer Wide-Area InfraRed Extragalactic (SWIRE) survey in the ELAIS-S1 area. This paper presents B, V, R Wide Field Imager observations of the first 1.5 square degree of the ESIS survey. Data reduction is described including astrometric calibration, illumination and color corrections, completeness and photometric accuracy estimates. Number counts and color distributions are compared to literature observational and theoretical data, including non-evolutionary, PLE, evolutionary and semi-analytic Lambda-CDM galaxy models, as well as Milky Way stellar predictions. ESIS data are in good agreement with previous works and are best reproduced by evolutionary and hierarchical Lambda-CDM scenarios. The ELAIS-S1 area benefits from extensive follow-up from X-ray to radio frequencies: some potential uses of the multi-wavelength observations are illustrated. Optical-Spitzer color-color plots promise to be very powerful tools to disentangle different classes of sources (e.g. AGNs, starbursts, quiescent galaxies). Ultraviolet GALEX data are matched to optical and Spitzer samples, leading to a discussion of galaxy properties in the UV-to-24 microns color space. The spectral energy distribution of a few objects, from the X-rays to the far-IR are presented as examples of the multi-wavelength study of galaxy emission components in different spectral domains. | | Source: | arXiv, astro-ph/0602252 | | Services: | Forum | Review | PDF | Favorites | |
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