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III/250             The VIMOS VLT deep survey (VVDS-DEEP)  (Le Fevre+ 2005)

The VIMOS VLT deep survey. Le Fevre O. et al. <Astron. Astrophys. 439, 845 (2005) > =2005A&A...439..845L
ADC_Keywords: Photometry, UBVRI ; Photometry, infrared; Galaxies, spectra ; Atlases Keywords: cosmology: observations - galaxies: high-redshift - galaxies: distances and redshift - surveys - galaxies: evolution - cosmology: large scale structure of Universe Decsription: This catalog contains the "First Epoch" sample from the VIMOS VLT Deep Survey (VVDS). The VVDS goals, observations, data reduction with the VIPGI pipeline and redshift measurement scheme are discussed in the paper. Data have been obtained with the VIsible Multi Object Spectrograph (VIMOS) on the ESO-VLT UT3, allowing to observe ≃600 slits simultaneously at a spectral resolution R≃230. A total of 11564 objects have been observed in the VVDS-02h and VVDS-CDFS "Deep" fields over a total area of 0.61deg2, selected solely on the basis of apparent magnitude 17.5≤I(AB)≤24. The VVDS efficiently covers the redshift range 0<z≤5, successfully going through the "redshift desert" 1.5<z<2.2, while the range 2.2<z<2.7 remains of difficult access because of the VVDS wavelength coverage. A total of 9677 galaxies have a redshift measurement, 836 objects are stars, 90 objects are AGN, and a redshift could not be measured for 961 objects. There are 1065 galaxies with a measured redshift z≥1.4. When considering only the primary spectroscopic targets, the survey reaches a redshift measurement completeness of 78% overall (93% including less reliable objects), with a spatial sampling of the population of galaxies of ∼25% and ∼30% in the VVDS-02h and VVDS-CDFS respectively. The redshift accuracy measured from repeated observations with VIMOS and comparison to other surveys is ∼276km/s. From this sample we are able to present for the first time the redshift distribution of a magnitude-limited spectroscopic sample down to I(AB)=24. The following papers to be cited for the usage of this catalog are: -- Le Fevre et al. (2005A&A...439..845L) for the spectroscopic survey description and baseline properties -- Le Brun et al. (2007 in preparation) for the information system -- Le Fevre et al. (2004A&A...417..839L) and McCracken et al. (2003A&A...410...17M) for the photometry -- Iovino et al. (2005A&A...442..423I) for the near-IR photometry -- Radovich et al. (2004A&A...417...51R) for the U-band photometry File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file vvds_dp.dat 307 8981 *The VVDS-DEEP Survey
Note on vvds_dp.dat: the names of the columns in the original catalog are given in parentheses in the "Byte-by-byte Description" below.
See also: J/A+A/428/1043 : Redshifts from VIMOS VLT Deep Survey (Le Fevre+, 2004) J/A+A/439/413 : XMDS/VVDS 4σ catalogue (Chiappetti+, 2005) J/A+A/463/519 : VVDS-VLA Deep Field: 610MHz catalog (Bondi+, 2007) : the CENCOS home page presenting the Vimos VLT Deep Survey Byte-by-byte Description of file: vvds_dp.dat
Bytes Format Units Label Explanations
1- 9 I09 --- ID Observation identification (NUM) 12- 16 A5 --- --- [VVDS-] 17- 35 A19 --- Jname Name based on J2000 position (ID_IAU) 40- 49 F10.6 deg RAdeg Right ascension (J2000) (ALPHA_J2000) 54- 63 F10.6 deg DEdeg Declination (J2000) (DELTA_J2000) 68- 72 F5.3 --- z Redshift (Z) 77- 79 I3 --- q_z [1,219] Redshift quality (ZFLAGS) (1) 89 I1 --- phf [0,1] Photometry is 0=questionable, 1=OK (PHOT_FLAG) 97-103 F7.3 mag UEmag ?=-99 AB magnitude in ESO U/360 filter (MAG_AUTO_UESO) (2) 109-120 E12.5 mag e_UEmag ?=-99 Mean error on UEmag (MAGERR_AUTO_UESO) 131-137 F7.3 mag ULmag ?=-99 AB magnitude in Loiano U filter (MAG_AUTO_ULOIANO) (2) 146-157 E12.5 mag e_ULmag ?=-99 Mean error on ULmag (MAGERR_AUTO_ULOIANO) 163-168 F6.3 mag Bmag ?=-99 AB magnitude in B filter (MAG_AUTO_B) 171-182 E12.5 mag e_Bmag ?=-99 Mean error on Bmag (MAGERR_AUTO_B) 188-193 F6.3 mag Vmag ?=-99 AB magnitude in V filter (MAG_AUTO_V) 196-207 E12.5 mag e_Vmag ?=-99 Mean error on Vmag (MAGERR_AUTO_V) 213-218 F6.3 mag Rmag ?=-99 AB magnitude in R filter (MAG_AUTO_R) 221-232 E12.5 mag e_Rmag ?=-99 Mean error on Rmag (MAGERR_AUTO_R) 238-243 F6.3 mag Imag ?=-99 AB magnitude in I filter (MAG_AUTO_I) 246-257 E12.5 mag e_Imag ?=-99 Mean error on Imag (MAGERR_AUTO_I) 262-268 F7.3 mag Jmag ?=-99 AB magnitude in J filter (MAG_AUTO_J) 270-282 E13.5 mag e_Jmag ?=-99 Mean error on Jmag (MAGERR_AUTO_J) 287-293 F7.3 mag Kmag ?=-99 AB magnitude in K filter (MAG_AUTO_K) 296-307 E12.5 mag e_Kmag ?=-99 Mean error on Kmag (MAGERR_AUTO_K)
Note (1): The last (rightmost) digit characterises the quality of the redshift: 0 = No redshift could be assigned to the 1D spectrum. 1 = 50% confidence in the redshift. 2 = 75% confidence in the redshift. 3 = 95% confidence. 4 = 100% confidence. 9 = Single isolated emission line spectra A value less than 10 indicates the quality of primary targets, i.e. objects which have been targeted in the VIMOS spectral slit. To this quality value, the following number may be added: +10 = a primary QSO target +20 = a secondary identified target, i.e. an object which is present by chance in the spectral slit in addition of the primary target; thus the secondary object is not ensured to be fully centered within the slit. +210 = secondary QSO identified target Note (2): the two U filters differ slightly: -- the ESO U filter has a central wavelength of 340nm and a FWHM of 73nm, has his highest wavelength close to 400nm. -- the Loiano U filter has a central wavelength of 362nm and a FWHM of 53nm; it also presents a red leak around 720nm
Acknowledgements: Chrystel Moreau (chrystel.moreau(at)oamp(fr)) Olivier Le Fevre (Olivier.LeFevre(at)oamp(fr))
(End) Francois Ochsenbein [CDS] 30-Mar-2007
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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