The fifth data release of the Kilo Degree Survey: Multi-epoch optical/NIR imaging covering wide and legacy-calibration fields

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Volume 686 (June 2024)

A&A, 686 (2024) A170

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Table I.1

Columns provided in the ten-band catalogue.

Label	Unit	Format	Description
Identifiers per source and Pointing on-sky:
`ID`		30A	ESO ID
`KIDS_TILE`		16A	Name of the pointing in ASTRO-WISE convention
`THELI_NAME`		16A	Name of the pointing in THELI convention
`SeqNr`		1J	Running object number within the catalogue
`SLID`		1J	ASTRO-WISE Source list ID
`SID`		1J	ASTRO-WISE Source ID within the source list
Parameters derived from the THELI r-band detection image:
`FLUX_AUTO`	Jy	1E	r-band flux
`FLUXERR_AUTO`	Jy	1E	Error on `FLUX_AUTO`
`MAG_AUTO`	mag	1E	r-band magnitude
`MAGERR_AUTO`	mag	1E	Error on `MAG_AUTO`
`KRON_RADIUS`	pixel	1E	Scaling radius of the ellipse for magnitude measurements
`BackGr`	Jy	1E	Background counts at centroid position
`Level`	Jy	1E	Detection threshold above background
`MU_THRESHOLD`	mag · arcsec⁻²	1E	Detection threshold above background
`MaxVal`	Jy	1E	Peak flux above background
`MU_MAX`	mag · arcsec⁻²	1E	Peak surface brightness above background
`ISOAREA_WORLD`	deg²	1E	Isophotal area above analysis threshold
`Xpos`	pixel	1E	Centroid x position in the THELI image
`Ypos`	pixel	1E	Centroid y position in the THELI image
`RAJ2000`	deg	1D	Centroid sky position right ascension (J2000)
`DECJ2000`	deg	1D	Centroid sky position declination (J2000)
`A_WORLD`	deg	1E	Profile RMS along major axis
`B_WORLD`	deg	1E	Profile RMS along minor axis
`THETA_J2000`	deg	1E	Position angle (west of north)
`THETA_WORLD`	deg	1E	Position angle (Counterclockwise from world x-axis)
`ERRA_WORLD`	deg	1E	World RMS position error along major axis
`ERRB_WORLD`	deg	1E	World RMS position error along minor axis
`ERRTHETA_J2000`	deg	1E	Error on `THETA_J2000`
`ERRTHETA_WORLD`	deg	1E	Error on `THETA_WORLD`
`FWHM_IMAGE`	pixel	1E	FWHM assuming a Gaussian object profile
`FWHM_WORLD`	deg	1E	FWHM assuming a Gaussian object profile
`Flag`		1I	SOURCE EXTRACTOR extraction flags
`FLUX_RADIUS`	pixel	1E	Half-light radius
`CLASS_STAR`		1E	Star-galaxy classifier
`MAG_ISO`	mag	1E	r-band isophotal Magnitude
`MAGERR_ISO`	mag	1E	Error on `MAG_ISO`
`FLUX_ISO`	Jy	1E	r-band isophotal Flux
`FLUXERR_ISO`	Jy	1E	Error on `FLUX_ISO`
`MAG_ISOCOR`	mag	1E	r-band corrected Isophotal Magnitude
`MAGERR_ISOCOR`	mag	1E	Error on `MAG_ISOCOR`
`FLUX_ISOCOR`	Jy	1E	r-band corrected Isophotal Flux
`FLUXERR_ISOCOR`	Jy	1E	Error on `FLUX_ISOCOR`
`NIMAFLAGS_ISO`		1I	Number of flagged pixels over the isophotal profile
`IMAFLAGS_ISO`		1I	FLAG-image flags ORed over the isophotal profile
`XMIN_IMAGE`	pixel	1I	Minimum x-coordinate among detected pixels
`YMIN_IMAGE`	pixel	1I	Minimum y-coordinate among detected pixels
`XMAX_IMAGE`	pixel	1I	Maximum x-coordinate among detected pixels
`YMAX_IMAGE`	pixel	1I	Maximum y-coordinate among detected pixels
`X_WORLD`	deg	1D	Barycentre position along world x axis
`Y_WORLD`	deg	1D	Barycentre position along world y axis
`X2_WORLD`	deg²	1E	Variance of position along `X_WORLD` (alpha)
`Y2_WORLD`	deg²	1E	Variance of position along `Y_WORLD` (delta)
`XY_WORLD`	deg²	1E	Covariance of position `X_WORLD,Y_WORLD`
`ERRX2_WORLD`	deg²	1E	Error on `X2_WORLD`
`ERRY2_WORLD`	deg²	1E	Error on `Y2_WORLD`
`ERRXY_WORLD`	deg²	1E	Error on `XY_WORLD`
`CXX_WORLD`	deg⁻²	1E	SOURCE EXTRACTOR Cxx object ellipse parameter
`CYY_WORLD`	deg⁻²	1E	SOURCE EXTRACTOR Cyy object ellipse parameter
`CXY_WORLD`	deg⁻²	1E	SOURCE EXTRACTOR Cxy object ellipse parameter
`ERRCXX_WORLD`	deg⁻²	1E	Error on `CXX_WORLD`
`ERRCYY_WORLD`	deg⁻²	1E	Error on `CYY_WORLD`
`ERRCXY_WORLD`	deg⁻²	1E	Error on `CXY_WORLD`
`A_IMAGE`	pixel	1D	Profile RMS along x-axis
`B_IMAGE`	pixel	1D	Profile RMS along y-axis
`ERRA_IMAGE`	pixel	1E	Error on `A_IMAGE`
`ERRB_IMAGE`	pixel	1E	Error on `B_IMAGE`
`S_ELLIPTICITY`		1E	SOURCE EXTRACTOR ellipticity `(1-B_IMAGE/A_IMAGE)`
`S_ELONGATION`		1E	SOURCE EXTRACTOR elongation `(A_IMAGE/B_IMAGE)`
`MAG_APER_4`	mag	1E	r-band magnitude within a circular aperture of 4 pixels
`MAGERR_APER_4`	mag	1E	Error on `MAG_APER_4`
`FLUX_APER_4`	Jy	1E	r-band flux within a circular aperture of 4 pixels
`FLUXERR_APER_4`	Jy	1E	Error on `FLUX_APER_4`
…
Similarly for radii 6, 8, 10, 14, 20, 30, 40, 60 pixels, up to
…
`MAG_APER_100`	mag	1E	r-band magnitude within a circular aperture of 100 pixels
`MAGERR_APER_100`	mag	1E	Error on `MAG_APER_100`
`FLUX_APER_100`	Jy	1E	r-band flux within a circular aperture of 100 pixels
`FLUXERR_APER_100`	Jy	1E	Error on `FLUX_APER_100`
`ISO0`	pixel²	1I	Isophotal area at level zero
`ISO1`	pixel²	1I	Isophotal area at level one
`ISO2`	pixel²	1I	Isophotal area at level two
`ISO3`	pixel²	1I	Isophotal area at level three
`ISO4`	pixel²	1I	Isophotal area at level four
`ISO5`	pixel²	1I	Isophotal area at level five
`ISO6`	pixel²	1I	Isophotal area at level six
`ISO7`	pixel²	1I	Isophotal area at level seven
`ALPHA_J2000`	deg	1D	SOURCE EXTRACTOR centroid right ascension (J2000)
`DELTA_J2000`	deg	1D	SOURCE EXTRACTOR centroid declination (J2000)
`SG2DPHOT`		1I	2DPhot StarGalaxy classifier (1 for high confidence star)
`HTM`		1J	Hierarchical Triangular Mesh (level 25)
`FIELD_POS`		1I	Reference number to field parameters
List-driven GAAP photometry on the ASTRO-WISE co-added KiDS images and the pawprint VIKING images:
`Agaper_0p7`	arcsec	1E	Major axis of GAAP aperture `MIN_APER 0″.7`
`Bgaper_0p7`	arcsec	1E	Minor axis of GAAP aperture `MIN_APER 0″.7`
`Agaper_1p0`	arcsec	1E	Major axis of GAAP aperture `MIN_APER 1″.0`
`Bgaper_1p0`	arcsec	1E	Minor axis of GAAP aperture `MIN_APER 1″.0`
`PAgaap`	deg	1E	Position angle of major axis of GAAP aperture (north of west)
and then for each band x ∊ {u, 𝑔, r, i₁, i₂, Z, Y, J, H, K_s}:^(a)
`FLUX_GAAP_0p7_x`	Jy	1E	GAAP flux in band x with `MIN_APER =0″.7`
`FLUXERR_GAAP_0p7_x`	Jy	1E	Error on `FLUX_GAAP_0p7_x`
`MAG_GAAP_0p7_x`	mag	1E	x-band GAAP magnitude with `MIN_APER =0″.7`
`MAGERR_GAAP_0p7_x`	mag	1E	Error on `MAG_GAAP_0p7_x`
`FLAG_GAAP_0p7_x`		1J	GAAP Flag for x-band photometry with `MIN_APER =0″.7`
`FLUX_GAAP_1p0_x`	Jy	1E	GAAP flux in band x with `MIN_APER =1″.0`
`FLUXERR_GAAP_1p0_x`	Jy	1E	Error on `FLUX_GAAP_1p0_x`
`MAG_GAAP_1p0_x`	mag	1E	x-band GAAP magnitude with `MIN_APER =1″.0`
`MAGERR_GAAP_1p0_x`	mag	1E	Error on `MAG_GAAP_1p0_x`
`FLAG_GAAP_1p0_x`		1J	GAAP Flag for x-band photometry with `MIN_APER =1″.0`
Optimal-aperture GAAP ten-band photometry including interstellar extinction corrections
`Agaper`	arcsec	1E	Major axis of GAAP aperture for optimal `MIN_APER`
`Bgaper`	arcsec	1E	Minor axis of GAAP aperture for optimal `MIN_APER`
and then for each band x ∊ {u, 𝑔, r, i₁, i₂, Z, Y, J, H, K_s}:^(a)
`EXTINCTION_x`	mag	1E	Galactic extinction in band x
`MAG_GAAP_x`	mag	1E	Corrected x-band GAAP magnitude with optimal `MIN_APER`
`MAGERR_GAAP_x`	mag	1E	Error on `MAG_GAAP_x`
`FLUX_GAAP_x`	Jy	1E	x-band GAAP flux with optimal `MIN_APER`
`FLUXERR_GAAP_x`	Jy	1E	Error on `FLUX_GAAP_x`
`FLAG_GAAP_x`		1I	GAAP Flag for x-band photometry with optimal `MIN_APER`
`MAG_LIM_x`	mag	1E	x-band limiting magnitude for optimal `MIN_APER`
Ten-band photometric redshifts (BPZ):
`Z_B`		1D	Ten-band BPZ redshift estimate (posterior mode)
`Z_B_MIN`		1D	Lower bound of the 68% confidence interval of `Z_B`
`Z_B_MAX`		1D	Upper bound of the 68% confidence interval of `Z_B`
`T_B`		1D	Spectral type corresponding to `Z_B`
`ODDS`		1D	Empirical ODDS of `Z_B`
`Z_ML`		1D	Ten-band BPZ maximum likelihood redshift
`T_ML`		1D	Spectral type corresponding to `Z_ML` ^(b)
`CHI_SQUARED_BPZ`		1D	chi squared value associated with `Z_B`
`M_0`	mag	1D	Reference magnitude for BPZ prior
`BPZ_FILT`		1J	filters with good photometry (BPZ)
`NBPZ_FILT`		1J	number of filters with good photometry (BPZ)
`BPZ_NONDETFILT`		1J	filters with faint photometry (BPZ)
`NBPZ_NONDETFILT`		1J	number of filters with faint photometry (BPZ)
`BPZ_FLAGFILT`		1J	flagged filters (BPZ)
`NBPZ_FLAGFILT`		1J	number of flagged filters (BPZ)
`SG_FLAG`		1E	Star/Gal Classifier
`MASK`		1J	Ten-band mask information ^(c)
PSF estimates (lensfit)
`PSF_e1`		1E	mean ellipticity of PSF, component one
`PSF_e2`		1E	mean ellipticity of PSF, component two
`PSF_Strehl_ratio`		1E	Pseudo-Strehl ratio of PSF
`PSF_Q11`		1E	model PSF moment Q11
`PSF_Q22`		1E	model PSF moment Q22
`PSF_Q21`		1E	model PSF moment Q21
Stellar Mass estimates (LePhare)^(d)
for each band x ∊ {u, 𝑔, r, i₁, i₂, Z, Y, J, H, K_s}:
`MAGABS_GAAP_x`		1D	rest-frame x-band magnitude
`KCOR_x`		1D	x-band k-correction
`LUM_GAAP_r_bestfit`		1D	r-band luminosity
`mstar_bestfit`		1D	stellar mass
`mstar_med`		1D	posterior median stellar mass
`mstar_lower`		1D	posterior 16^th percentile stellar mass
`mstar_upper`		1D	posterior 84^th percentile stellar mass
`sfr_bestfit`		1D	star-formation rate
`sfr_med`		1D	posterior median star-formation rate
`sfr_lower`		1D	posterior 16^th percentile star-formation
`sfr_upper`		1D	posterior 84^th percentile star-formation
Dereddened colours based on optimal-aperture GAAP photometry
`COLOUR_GAAP_u_g`	mag	1E	u − 𝑔 colour index (dereddened)
`COLOUR_GAAP_g_r`	mag	1E	𝑔 − r colour index (dereddened)
`COLOUR_GAAP_r_i1`	mag	1E	r − i₁ colour index (dereddened)
`COLOUR_GAAP_r_i2`	mag	1E	r − i₂ colour index (dereddened)
`COLOUR_GAAP_i1_Z`	mag	1E	i₁ − Z colour index (dereddened)
`COLOUR_GAAP_i2_Z`	mag	1E	i₂ − Z colour index (dereddened)
`COLOUR_GAAP_Z_Y`	mag	1E	Z − Y colour index (dereddened)
`COLOUR_GAAP_Y_J`	mag	1E	Y − J colour index (dereddened)
`COLOUR_GAAP_J_H`	mag	1E	J − H colour index (dereddened)
`COLOUR_GAAP_H_Ks`	mag	1E	H − K_s colour index (dereddened)
`DIFF_GAAP_i1_i2`	mag	1E	i₁ − i₂ i-band magnitude difference

Notes. ^(a)See Sect. 6.5 for the definitions of the flux and magnitude zero-points. ^(b)Definition of the spectral types: 1=CWW-E11, 2=CWW-Sbc, 3=CWW-Scd, 4=CWW-Im, 5=KIN-SB3, 6=KIN-SB2 ^(c)For the meaning of the mask see Table 11 ^(d)Stellar masses are computed in the same manner as described in Wright et al. (2019)

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