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http://hdl.handle.net/20.500.12386/34756
Titolo: | The VIRMOS deep imaging survey: III. ESO/WFI deep U-band imaging of the 0226-04 deep field | Autori: | RADOVICH, MARIO Arnaboldi, M. RIPEPI, Vincenzo Massarotti, M. McCracken, H. J. Mellier, Y. Bertin, E. ZAMORANI, Giovanni Adami, C. BARDELLI, Sandro Le Fevre, O. Foucaud, S. GARILLI, Bianca Maria Rosa SCARAMELLA, Roberto VETTOLANI, Giampaolo ZANICHELLI, Alessandra ZUCCA, Elena |
Data pubblicazione: | 2004 | Rivista: | ASTRONOMY & ASTROPHYSICS | Numero: | 417 | Fascicolo: | 1 | Da pagina:: | 51 | Abstract: | In this paper we describe the U-band imaging of the F02 deep field, one of the fields in the VIRMOS Deep Imaging Survey. The observations were done at the ESO/MPG 2.2m telescope at La Silla (Chile) using the 8k x 8k Wide-Field Imager (WFI). The field is centered at alpha(J2000)=02h 26m 00s and delta(J2000)=-04deg 30' 00", the total covered area is 0.9 deg**2 and the limiting magnitude (50% completeness) is U(AB) ~ 25.4 mag. Reduction steps, including astrometry, photometry and catalogue extraction, are first discussed. The achieved astrometric accuracy (RMS) is ~ 0.2" with reference to the I-band catalog and ~ 0.07" internally (estimated from overlapping sources in different exposures). The photometric accuracy including uncertainties from photometric calibration, is < 0.1 mag. Various tests are then performed as a quality assessment of the data. They include: (i) the color distribution of stars and galaxies in the field, done together with the BVRI data available from the VIMOS survey; (ii) the comparison with previous published results of U-band magnitude-number counts of galaxies. | URI: | http://hdl.handle.net/20.500.12386/34756 | URL: | https://www.aanda.org/articles/aa/abs/2004/13/aa0458/aa0458.html | ISSN: | 0004-6361 | DOI: | 10.1051/0004-6361:20034458 | Bibcode ADS: | 2004A&A...417...51R | Fulltext: | open |
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