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Details - The Kilo-Degree Survey: Weak lensing shear mesurements

Title The Kilo-Degree Survey: Weak lensing shear mesurements
Version 1
Data Provider/P.I. K. Kuijken
Data Collection KIDS
Data Release DR3.1
Submission Date 2016-12-20
Publication Date 2017-01-03
Description This catalogue contains the weak lensing shear measurements from the KiDS-450 data set, which corresponds to the survey area of the third public release of the Kilo-Degree survey (KiDS)
Please refer to the full data release description for further information.
Telescope ESO-VST
Instrument OMEGACAM
Technique of Observation IMAGE,DITHER
Start of Observations 55,799.266 (2011-08-26T20:23:49)
End of Observations 57,300.021 (2015-10-05T14:31:01)
Filter Set/bands u_SDSS g_SDSS r_SDSS i_SDSS
Sky Solid Angle 449.7
Number of Records 14650348
Number of Columns 63
Reference 2017MNRAS.465.1454H
Acknowledgment Policy Please include the following acknowledgment in any published material that makes use of this data product: Based on data obtained from the ESO Science Archive Facility with DOI: https://doi.org/10.18727/archive/37
Position Name Description Data Type Data Size UCD Physical Unit
1 ID Source identifier STRING 25 meta.id;meta.main
2 RAJ2000 Right ascension of barycenter (J2000) DOUBLE 1 pos.eq.ra;meta.main deg
3 DECJ2000 Declination of barycenter (J2000) DOUBLE 1 pos.eq.dec;meta.main deg
4 Patch Patch (G9, G12, G15, G23 or GS) STRING 3 meta.id
5 SeqNr Running object number within the patch INT32 1 meta.id
6 KIDS_TILE Name of survey tile STRING 16 meta.id
7 THELI_NAME THELI name for the tile STRING 16 meta.id
8 MASK Mask value at the object position INT32 1 meta.code
9 SG_FLAG Star-galaxy separator (0=star, 1=galaxy) FLOAT 1 src.class.starGalaxy
10 KRON_RADIUS Scaling radius of the ellipse for magnitude measurements FLOAT 1 phys.angSize;src pixel
11 Xpos Object position along x in the r-band THELI stack (non unique) FLOAT 1 pos.cartesian.x pixel
12 Ypos Object position along y in the r-band THELI stack (non unique) FLOAT 1 pos.cartesian.y pixel
13 FWHM_IMAGE r-band FWHM assuming a Gaussian core FLOAT 1 phys.angSize;src pixel
14 FWHM_WORLD r-band FWHM assuming a Gaussian core FLOAT 1 phys.angSize;src deg
15 Flag r-band SExtractor extraction flags INT32 1 meta.code
16 FLUX_RADIUS r-band half-light radius FLOAT 1 phys.angSize;src pixel
17 CLASS_STAR r-band SExtractor S/G classifier output FLOAT 1 src.class.starGalaxy
18 MAG_u Magnitude in the u-band (GAaP, dereddened) FLOAT 1 phot.mag.reddFree;em.opt.U mag
19 MAGERR_u Magnitude error in the u-band FLOAT 1 stat.error;phot.mag;em.opt.U mag
20 MAG_g Magnitude in the g-band (GAaP, dereddened) FLOAT 1 phot.mag.reddFree;em.opt.B mag
21 MAGERR_g Magnitude error in the g-band FLOAT 1 stat.error;phot.mag;em.opt.B mag
22 MAG_r Magnitude in the r-band (GAaP, dereddened) FLOAT 1 phot.mag.reddFree;em.opt.R mag
23 MAGERR_r Magnitude error in the r-band FLOAT 1 stat.error;phot.mag;em.opt.R mag
24 MAG_i Magnitude in the i-band (GAaP, dereddened) FLOAT 1 phot.mag.reddFree;em.opt.I mag
25 MAGERR_i Magnitude error in the i-band FLOAT 1 stat.error;phot.mag;em.opt.I mag
26 MAG_LIM_u Limiting magnitude in the u-band FLOAT 1 phot.mag.reddFree;em.opt.U mag
27 MAG_LIM_g Limiting magnitude in the g-band FLOAT 1 phot.mag.reddFree;em.opt.B mag
28 MAG_LIM_r Limiting magnitude in the r-band FLOAT 1 phot.mag.reddFree;em.opt.R mag
29 MAG_LIM_i Limiting magnitude in the i-band FLOAT 1 phot.mag.reddFree;em.opt.I mag
30 ZPT_offset Zeropoint offset derived from GAIA DR1 G photometry FLOAT 1 phot.calib mag
31 Z_B BPZ best redshift estimate FLOAT 1 src.redshift.phot
32 Z_B_MIN Lower bound of the 95% confidence interval of Z_B FLOAT 1 src.redshift.phot
33 Z_B_MAX Upper bound of the 95% confidence interval of Z_B FLOAT 1 src.redshift.phot
34 T_B Spectral type corresponding to Z_B FLOAT 1 src.morph.type
35 ODDS Empirical ODDS of Z_B FLOAT 1 stat.probability
36 fitclass Lensfit: fit class INT16 1 meta.code
37 bias_corrected_scalelength Lensfit: galaxy model scalelength FLOAT 1 src.morph.scLength pixel
38 bulge_fraction Lensfit: galaxy model bulge-fraction B/T FLOAT 1 src.morph.param;arith.ratio
39 model_flux Lensfit: galaxy model flux FLOAT 1 phot.flux;em.opt.R counts
40 pixel_SNratio Lensfit: data S/N ratio FLOAT 1 stat.snr
41 model_SNratio Lensfit: model S/N ratio FLOAT 1 stat.snr
42 contamination_radius Lensfit: distance to nearest contaminating isophote FLOAT 1 phys.angSize pixel
43 PSF_e1 Lensfit: PSF model mean ellipticity e1 FLOAT 1 src.morph.param
44 PSF_e2 Lensfit: PSF model mean ellipticity e2 FLOAT 1 src.morph.param
45 PSF_Strehl_ratio Lensfit: PSF model mean pseudo-Strehl ratio FLOAT 1 meta.code.qual
46 PSF_Q11 Lensfit: 2nd order brightness moment Q11 of the PSF FLOAT 1 src.morph.param
47 PSF_Q22 Lensfit: 2nd order brightness moment Q22 of the PSF FLOAT 1 src.morph.param
48 PSF_Q12 Lensfit: 2nd order brightness moment Q12 of the PSF FLOAT 1 src.morph.param
49 n_exposures_used Lensfit: number of r-band exposures used in lensfit measurements FLOAT 1 meta.number
50 PSF_e1_exp1 Lensfit: PSF model ellipticity e1 of exposure 1 FLOAT 1 src.morph.param
51 PSF_e2_exp1 Lensfit: PSF model ellipticity e2 of exposure 1 FLOAT 1 src.morph.param
52 PSF_e1_exp2 Lensfit: PSF model ellipticity e1 of exposure 2 FLOAT 1 src.morph.param
53 PSF_e2_exp2 Lensfit: PSF model ellipticity e2 of exposure 2 FLOAT 1 src.morph.param
54 PSF_e1_exp3 Lensfit: PSF model ellipticity e1 of exposure 3 FLOAT 1 src.morph.param
55 PSF_e2_exp3 Lensfit: PSF model ellipticity e2 of exposure 3 FLOAT 1 src.morph.param
56 PSF_e1_exp4 Lensfit: PSF model ellipticity e1 of exposure 4 FLOAT 1 src.morph.param
57 PSF_e2_exp4 Lensfit: PSF model ellipticity e2 of exposure 4 FLOAT 1 src.morph.param
58 PSF_e1_exp5 Lensfit: PSF model ellipticity e1 of exposure 5 FLOAT 1 src.morph.param
59 PSF_e2_exp5 Lensfit: PSF model ellipticity e2 of exposure 5 FLOAT 1 src.morph.param
60 e1 Lensfit: galaxy e1 expectation value FLOAT 1 src.morph.param
61 e2 Lensfit: galaxy e2 expectation value FLOAT 1 src.morph.param
62 weight Lensfit: inverse variance shear weight FLOAT 1 stat.weight
63 m Multiplicative shear calibration FLOAT 1 arith.factor