The first 27 columns are the same as the columns in the catalogues from DR2. See the documentation for DR2 for more details. 1: HATLAS_IAU_ID(String) HATLAS IAU name 2: IDNAME(String) HATLAS short name 3: RA(Double) position of HATLAS source 4: DEC(Double) position of HATLAS source 5: F250(Double) 250um flux from MF [Jy] 6: F350(Double) 350um flux from MF [Jy] 7: F500(Double) 500um flux from MF [Jy] 8: E250(Double) 250um 1 sigma flux error assuming confusion noise variable with flux [Jy] 9: E350(Double) 350um 1 sigma flux error assuming confusion noise variable with flux [Jy] 10: E500(Double) 500um 1 sigma flux error assuming confusion noise variable with flux [Jy] 11: F250BEST(Double) 250um best flux [Jy] 12: E250BEST(Double) 250um 1 sigma best flux error [Jy] 13: AP250(Float) 250um aperture radius [arcsec] 14: F350BEST(Double) 350um best flux [Jy] 15: E350BESTP(Double) 350um 1 sigma best flux error [Jy] 16: AP350(Float) 350um aperture radius [arcsec] 17: F500BEST(Double) 500um best flux [Jy] 18: E500BEST(Double) 500um 1 sigma best flux error [Jy] 19: AP500(Float) 500um aperture radius [arcsec] 20: F100BEST(Double) 100um best flux from aperture photometry [Jy] 21: E100BEST(Double) 100um 1 sigma best flux error on aperture photometry flux [Jy] 22: AP100(Float) 100um aperture radius [arcsec] 23: F160BEST(Double) 160um best flux from aperture photometry [Jy] 24: E160BEST(Double) 160um 1 sigma best flux error on aperture photometry flux [Jy] 25: AP160(Float) 160um aperture radius [arcsec] 26: AP_RMIN(Double) minor semi-axis of customised aperture [arcsec] 27: AP_PA(Double) positional angle of customised aperture [degrees] 28: NEARIR_RA(Double) position of the near-IR ID from VIKING 29: NEARIR_DEC(Double) position of the near-IR ID from VIKING 30: SEPARATION_ARCSEC(Float) separation between HATLAS position and near-IR position [arcsec] 31: LIKELIHOOD(Double) likelihood the VIKING object is related to the HATLAS source 32: RELIABILITY(Double) reliability of the VIKING object being related to the HATLAS source 33: pStar(Double) VIKING:- probability that the source is a star 34: GS_KEY(Float) galaxy/star key - see readme 35: GS_FLAG(Float) galaxy/star flag (0=star, 1=gal) 36: Z_SPIRE(Double) photometric redshift estimated from SPIRE fluxes 37: Z_SPIREERR(Double) error in photometric redshift estimated from SPIRE fluxes 38: VIKING_OBJID(Long) VIKING ID if present 39: ZAPERMAG3(Double) VIKING:- Z aperture corrected magnitude (2 arcsec diameter) 40: ZAPERMAG3ERR(Double) VIKING:- error in Z aperture corrected magnitude (2 arcsec diameter) 41: YAPERMAG3(Double) VIKING:- Y aperture corrected magnitude (2 arcsec diameter) 42: YAPERMAG3ERR(Double) VIKING:- error in Y aperture corrected magnitude (2 arcsec diameter) 43: JAPERMAG3(Double) VIKING:- J aperture corrected magnitude (2 arcsec diameter) 44: JAPERMAG3ERR(Double) VIKING:- error in J aperture corrected magnitude (2 arcsec diameter) 45: HAPERMAG3(Double) VIKING:- H aperture corrected magnitude (2 arcsec diameter) 46: HAPERMAG3ERR(Double) VIKING:- error in H aperture corrected magnitude (2 arcsec diameter) 47: KSAPERMAG3(Double) VIKING:- Ks aperture corrected magnitude (2 arcsec diameter) 48: KSAPERMAG3ERR(Double) VIKING:- error in Ks aperture corrected magnitude (2 arcsec diameter) 49: 2MASSEXT_ID(String) 2MASS Extended Source Catalog ID if present 50: 2MASS_RA(Float) 2MASS:- position of the ID from 2MASS Extended Source Catalog 51: 2MASS_DEC(Float) 2MASS:- position of the ID from 2MASS Extended Source Catalog 52: JMAG(Float) 2MASS:- J magnitude within K fiducial Kron elliptical aperture semi-major axis 53: JMAGERR(Float) 2MASS:- error in J magnitude within K fiducial Kron elliptical aperture semi-major axis 54: HMAG(Float) 2MASS:- H magnitude within K fiducial Kron elliptical aperture semi-major axis 55: HMAGERR(Float) 2MASS:- error in H magnitude within K fiducial Kron elliptical aperture semi-major axis 56: KMAG(Float) 2MASS:- K magnitude within K fiducial Kron elliptical aperture semi-major axis 57: KMAGERR(Float) 2MASS:- error in K magnitude within K fiducial Kron elliptical aperture semi-major axis 58: KiDS_IAU_ID(String) KiDS ID if present 59: MAG_GAAP_g(Double) KiDS:- g magnitude within optimal minimum aperture 60: MAGERR_GAAP_g(Float) KiDS:- error in g magnitude within optimal minimum aperture 61: MAG_GAAP_i(Double) KiDS:- i magnitude within optimal minimum aperture 62: MAGERR_GAAP_i(Float) KiDS:- error in i magnitude within optimal minimum aperture 63: HELP_IAU_ID(String) HELP ID if present 64: Z_PHOT(Float) median of the primary redshift peak above 80% HPD credible interval 65: Z_PHOTERR(Double) error on photometric redshift assuming a Gaussian HPD credible interval 66: Z_PHOTMIN(Float) minimum redshift of the primary redshift peak above 80% HPD credible interval 67: Z_PHOTMAX(Float) maximum redshift of the primary redshift peak above 80% HPD credible interval (68): LENSEDPROB(Double) probability (>94%) that HATLAS source is lensed by near-IR ID (column only for single IDs) 68(69): Z_SPEC(Double) spectroscopic redshift measurement 69(70): Z_SOURCE(Short) survey that produced the spectroscopic redshift - see readme 70(71): Z_QUAL(Short) quality flag of the spectroscopic redshift - see readme 71(72): REL(String) reliability of spectroscopic redshift (0 - 1) 72(73): OBJID(String) object ID for the source of the spectroscopic measurement 73(74): AGN(Short) flag if the survey provides information identifying the object as a QSO or AGN (1=QSO/AGN, 0=otherwise)