Table information for 'hetdex.main_merged'

General

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Resource Description: This service queries the catalog of radio sources from the LOFAR Two-metre Sky Survey First Data Release (LoTSS-DR1) that have been cross-matched with an optical or infrared counterpart. This data release contains images and catalogs that characterise the low-frequency radio emission in the region of the HETDEX Spring Field (right ascension 10h45m00s to15h30m00s and declination 45◦00′00′′ to 57◦00′00′′). A total of 325,694 radio sources are detected in a region covering 424 square degrees. The maps have a median sensitivity of 71 uJy/beam and a resolution of 6 arcsec. Optical counterparts for 71% of the radio sources have been identified and where possible photometric redshifts for these sources have been derived.

For a list of all services and tables belonging to this table's resource, see Information on resource 'LoTSS-DR1 Cross-Matched Source Catalogue'

Further information

Citing this table

This table has an associated publication. If you use data from it, it may be appropriate to reference either in addition to or instead of the service reference.

To cite the table as such, we suggest the following BibTeX entry:

@MISC{vo:hetdex_main_merged,
  year=2018,
  title={{LoTSS}-DR1 Cross-Matched Source Catalogue},
  author={{LOFAR} Surveys {KSP}},
  url={https://vo.astron.nl/tableinfo/hetdex.main_merged},
  howpublished={{VO} resource provided by the The VO @ {ASTRON}}
}

Fields

Sorted by DB column index. [Sort alphabetically]

NameTable Head DescriptionUnitUCD
Source_Name ID The radio name of the source, automatically generated from RA and DEC in most cases N/A meta.id;meta.main
RA RA Position from PyBDSF or combination of PyBDSF components deg pos.eq.ra;meta.main
E_RA error RA Estimated by PyBDSF. Only fitting uncertainties are included arcsec stat.error;pos.eq.ra
DEC Dec Position from PyBDSF or combination of PyBDSF components deg pos.eq.dec;meta.main
E_DEC error Dec Estimated by PyBDSF. Only fitting uncertainties are included arcsec stat.error;pos.eq.dec
Peak_flux Peak flux The peak Stokes I flux density per beam of the source mJy/beam N/A
E_Peak_flux error Peak flux The 1-σ error on the peak flux density per beam of the source mJy/beam N/A
Total_flux Total flux The total, integrated Stokes I flux density of the source at the reference frequency mJy N/A
E_Total_flux error Total flux The 1-σ on the total flux density of the source mJy N/A
Major Major Axis The FWHM of the major axis of the source, INCLUDING convolution with the 6-arcsec LOFAR beam arcsec N/A
E_Maj E_Maj The 1-σ error on the FWHM of the major axis of the source arcsec N/A
Minor Minor Axis The FWHM of the minor axis of the source, INCLUDING convolution with the 6-arcsec LOFAR beam arcsec N/A
E_Min E_Min The 1-σ error on the FWHM of the minor axis of the source arcsec N/A
DC_Maj DC_Maj The FWHM of the major axis of the source, after de-convolution with the 6-arcsec LOFAR beam arcsec N/A
E_DC_Maj E_DC_Maj The 1-σ error on the FWHM of the deconvolved major axis of the source arcsec N/A
DC_Min DC_Min The FWHM of the minor axis of the source, after de-convolution with the 6-arcsec LOFAR beam arcsec N/A
E_DC_Min E_DC_Min The 1-σ error on the FWHM of the deconvolved minor axis of the source arcsec N/A
PA PA The position angle of the major axis of the source measured east of north, INCLUDING convolution with the 6-arcsec LOFAR beam deg N/A
E_PA E_PA The 1-σ error on the position angle of the major axis of the source deg N/A
DC_PA DC_PA The position angle of the major axis of the source measured east of north, after de-convolution with the 6-arcsec LOFAR beam deg N/A
E_DC_PA E_DC_PA The 1-σ error on the position angle of the deconvolved major axis of the source deg N/A
Isl_rms RMS noise The average background rms value of the island mJy/beam N/A
S_Code Gaus A code the defines the source structure in terms of the fitted Gaussian components: ’S’ indicates an isolated source that is fit with a single Gaussian; ‘C’ represents sources that are fit by a single Gaussian but are within an island of emission that also contains other sources; and ‘M’ is used for sources with are extended and fit with multiple Gaussians. N/A N/A
Mosaic_ID Mosaic The name of the HETDEX mosaic in which the FITS image can be found N/A N/A
Masked_Fraction Masked_Fraction The fraction of the source that is in the CLEAN mask N/A N/A
ID_flag ID_flag Flag indicating the origin of the optical identification. 0 - no ID possible (too large or otherwise difficult) 1 - identification (or alck thereof) from maximum likelihood analysis 2 - match to a bright galaxy (either 2MASX or SDSS) 3? - association and identification (or lack therof) from LGZ, second digit is further flag 31 - output from LGZ 32 - output from LGZ (too-zoomed-in) 4? - association and identification (or lack therof) through deblend workflow 41 - deblend following flowchart classification of m sources 42 - deblend following LG N/A N/A
ID_name ID_name PanSTARRs, AllWISE, 2MASX or SDSS name of optical identification N/A meta.id
ID_ra ID_ra Right ascension of optical identification deg pos.eq.ra
ID_dec ID_dec Declination of optical identification deg pos.eq.dec
ML_LR ML_LR Likelihood ratio from maximum likelihood analysis N/A N/A
LGZ_Size LGZ_Size Length of the largest diameter of the convex hull around the set of component elliptical Gaussians arcsec N/A
LGZ_Width LGZ_Width Twice the maximum perpendicular distance of points on the convex hull to the largest diameter line arcsec N/A
LGZ_PA LGZ_PA The position angle on the sky, measured east of north, of that largest diameter deg N/A
LGZ_Assoc LGZ_Assoc Number of sources in the LGZ association N/A N/A
LGZ_Assoc_Qual LGZ_Assoc_Qual LGZ association quality flag N/A N/A
LGZ_ID_Qual LGZ_ID_Qual LGZ identification quality flag N/A N/A
Deblended_from Deblended_from Name of PyBDSF multiple Gaussian component source from which this source was deblended N/A N/A
AllWISE AllWISE Name of the source in the AllWISE catalogue N/A meta.id
objid objid The PanSTARRs object ID N/A meta.id
gFApFlux gFApFlux PanSTARRs g-band forced aperture photometry flux uJy N/A
gFApFluxErr gFApFluxErr PanSTARRs g-band forced aperture photometry flux error uJy N/A
gFApMag gFApMag PanSTARRs g-band forced aperture photometry magnitude mag N/A
gFApMagErr gFApMagErr PanSTARRs g-band forced aperture photometry magnitude error mag N/A
rFApFlux rFApFlux PanSTARRs r-band forced aperture photometry flux uJy N/A
rFApFluxErr rFApFluxErr PanSTARRs r-band forced aperture photometry flux error uJy N/A
rFApMag rFApMag PanSTARRs r-band forced aperture photometry magnitude mag N/A
rFApMagErr rFApMagErr PanSTARRs r-band forced aperture photometry magnitude error mag N/A
iFApFlux iFApFlux PanSTARRs i-band forced aperture photometry flux uJy N/A
iFApFluxErr iFApFluxErr PanSTARRs i-band forced aperture photometry flux error uJy N/A
iFApMag iFApMag PanSTARRs i-band forced aperture photometry magnitude mag N/A
iFApMagErr iFApMagErr PanSTARRs i-band forced aperture photometry magnitude error mag N/A
zFApFlux zFApFlux PanSTARRs z-band forced aperture photometry flux uJy N/A
zFApFluxErr zFApFluxErr PanSTARRs z-band forced aperture photometry flux error uJy N/A
zFApMag zFApMag PanSTARRs z-band forced aperture photometry magnitude mag N/A
zFApMagErr zFApMagErr PanSTARRs z-band forced aperture photometry magnitude error mag N/A
yFApFlux yFApFlux PanSTARRs y-band forced aperture photometry flux uJy N/A
yFApFluxErr yFApFluxErr PanSTARRs y-band forced aperture photometry flux error uJy N/A
yFApMag yFApMag PanSTARRs y-band forced aperture photometry magnitude mag N/A
yFApMagErr yFApMagErr PanSTARRs y-band forced aperture photometry magnitude error mag N/A
gFKronFlux gFKronFlux PanSTARRs g-band forced photometry Kron flux uJy N/A
gFKronFluxErr gFKronFluxErr PanSTARRs g-band forced photometry Kron flux error uJy N/A
rFKronFlux rFKronFlux PanSTARRs r-band forced photometry Kron flux uJy N/A
rFKronFluxErr rFKronFluxErr PanSTARRs r-band forced photometry Kron flux error uJy N/A
iFKronFlux iFKronFlux PanSTARRs i-band forced photometry Kron flux uJy N/A
iFKronFluxErr iFKronFluxErr PanSTARRs i-band forced photometry Kron flux error uJy N/A
zFKronFlux zFKronFlux PanSTARRs z-band forced photometry Kron flux uJy N/A
zFKronFluxErr zFKronFluxErr PanSTARRs z-band forced photometry Kron flux error uJy N/A
yFKronFlux yFKronFlux PanSTARRs y-band forced photometry Kron flux uJy N/A
yFKronFluxErr yFKronFluxErr PanSTARRs y-band forced photometry Kron flux error uJy N/A
W1Flux W1Flux AllWISE W1 profile-fit photometry flux uJy N/A
W1FluxErr W1FluxErr AllWISE W1 profile-fit photometry flux error uJy N/A
W1Mag W1Mag AllWISE W1 profile-fit photometry magnitude mag N/A
W1MagErr W1MagErr AllWISE W1 profile-fit photometry magnitude error mag N/A
W2Flux W2Flux AllWISE W1 profile-fit photometry flux uJy N/A
W2FluxErr W2FluxErr AllWISE W1 profile-fit photometry flux error uJy N/A
W2Mag W2Mag AllWISE W1 profile-fit photometry magnitude mag N/A
W2MagErr W2MagErr AllWISE W1 profile-fit photometry magnitude error mag N/A
W3Flux W3Flux AllWISE W1 profile-fit photometry flux uJy N/A
W3FluxErr W3FluxErr AllWISE W1 profile-fit photometry flux error uJy N/A
W3Mag W3Mag AllWISE W1 profile-fit photometry magnitude mag N/A
W3MagErr W3MagErr AllWISE W1 profile-fit photometry magnitude error mag N/A
W4Flux W4Flux AllWISE W1 profile-fit photometry flux uJy N/A
W4FluxErr W4FluxErr AllWISE W1 profile-fit photometry flux error uJy N/A
W4Mag W4Mag AllWISE W1 profile-fit photometry magnitude mag N/A
W4MagErr W4MagErr AllWISE W1 profile-fit photometry magnitude error mag N/A
z_best z_best Best available redshift estimate N/A N/A
z_best_source z_best_source Source of z_best, 0 = photometric, 1 = spectroscopic N/A N/A
z_spec z_spec Literature Spectroscopic Redshift N/A N/A
z_spec_source z_spec_source Source of z_spec, 1 = SDSS, 2 = DEEP 2/3, 4 = 3D-HST, 8 = Steidel et al. (2003), 16 = AEGIS-X, 32 = Huang et al. (2009) N/A N/A
z1_median z1_median Median of the primary redshift peak above 80% HPD CI N/A N/A
z1_min z1_min Lower bound of the primary 80% HPD CI peak N/A N/A
z1_max z1_max Upper bound of the primary 80% HPD CI peak N/A N/A
z1_area z1_area Integrated area of the primary 80% HPD CI peak N/A N/A
z2_median z2_median Median of the secondary redshift peak (if present) above 80% HPD CI N/A N/A
z2_min z2_min Lower bound of the secondary 80% HPD CI peak N/A N/A
z2_max z2_max Upper bound of the secondary 80% HPD CI peak N/A N/A
z2_area z2_area Integrated area of the secondary 80% HPD CI peak N/A N/A
specAGN specAGN Flag indicating spectroscopically identified AGN N/A N/A
mqcAGN mqcAGN Flag indicating source is included in Million Quasar Catalog compilation N/A N/A
XrayClass XrayClass 2RXS or XMMSL2 X-ray source class: 1=AGN, 2=Galaxy/Star (based on criteria in Salvato+2017) N/A N/A
_2RXS_ID 2RXS_ID ID in 2RXS catalog (if available) N/A N/A
XMMSL2_ID XMMSL2_ID ID in XMMSL2 catalog N/A N/A
IRClass IRClass Bit-flag indicating WISE AGN Class based on Assef+2012 selection criteria. 1 - 90% Completeness criteria, 2 - 75% Completeness criteria, 4 - 75% Reliability criteria, 8 - 90% Reliability criteria N/A N/A
EBV EBV E(B-V) galactic extinction for the source based on its position and Schlegel, Finkbeiner and Davis (1998) extinction maps - http://argonaut.skymaps.info. Fluxes and magnitudes in the catalog have already been corrected based on this value. N/A N/A
PanSTARRS_Missing PanSTARRS_Missing Boolean flag indicating source has no PS1 FAp available (and hence may be missing ID/photo-z) N/A N/A
u_rest u_rest Estimated rest frame u-band magnitude (for z_best) mag N/A
g_rest g_rest Estimated rest frame g-band magnitude (for z_best) mag N/A
r_rest r_rest Estimated rest frame r-band magnitude (for z_best) mag N/A
i_rest i_rest Estimated rest frame i-band magnitude (for z_best) mag N/A
z_rest z_rest Estimated rest frame z-band magnitude (for z_best) mag N/A
U__rest U_rest Estimated rest frame U-band magnitude (for z_best) mag N/A
B_rest B_rest Estimated rest frame B-band magnitude (for z_best) mag N/A
V_rest V_rest Estimated rest frame V-band magnitude (for z_best) mag N/A
I__rest I_rest Estimated rest frame I-band magnitude (for z_best) mag N/A
J_rest J_rest Estimated rest frame J-band magnitude (for z_best) mag N/A
Ks_rest Ks_rest Estimated rest frame Ks-band magnitude (for z_best) mag N/A
w1_rest w1_rest Estimated rest frame w1-band magnitude (for z_best) mag N/A
w2_rest w2_rest Estimated rest frame w2-band magnitude (for z_best) mag N/A
w3_rest w3_rest Estimated rest frame w3-band magnitude (for z_best) mag N/A

Columns that are parts of indices are marked like this.

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