J/A+A/627/A31ivo://CDS.VizieR/J/A+A/627/A31doi:10.26093/cds/vizier.36270031CDSGonzalez-Nuevo J.Suarez Gomez S.L.Bonavera L.Sanchez-Lasheras F.,Argueso F.Toffolatti L.Herranz D.Gonzalez-Gutierrez C.,Garcia Riesgo F.de Cos Juez F.J.2024-03-01T13:48:58Z2019-07-01T11:05:08ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frgalaxiesinfrared-sourcescatalogsgravitational-lensingThe statistical analysis of large sample of strong lensing events can be a powerful tool to extract astrophysical or cosmological valuable information. Their selection using submillimetre galaxies has been demonstrated to be very effective with more than ~200 proposed candidates in the case of Herschel-ATLAS data and several tens in the case of the South Pole Telescope. However, the number of confirmed events is still relatively low, i.e. a few tens, mostly because of the lengthy observational validation process on individual events. In this work we propose a new methodology with a statistical selection approach to increase by a factor of ~5 the number of such events within the Herschel-ATLAS data set. Although the methodology can be applied to address several selection problems, it has particular benefits in the case of the identification of strongly lensed galaxies: objectivity, minimal initial constrains in the main parameter space, and preservation of statistical properties. The proposed methodology is based on the Bhattacharyya distance as a measure of the similarity between probability distributions of properties of two different cross-matched galaxies. The particular implementation for the aim of this work is called SHALOS and it combines the information of four different properties of the pair of galaxies: angular separation, luminosity percentile, redshift, and the ratio of the optical to the submillimetre flux densities. The SHALOS method provides a ranked list of strongly lensed galaxies. The number of candidates within ~340{deg}^2^ of the Herschel-ATLAS surveyed area for the final associated probability, P_tot_>0.7, is 447 and they have an estimated mean amplification factor of 3.12 for a halo with a typical cluster mass. Additional statistical properties of the SHALOS candidates, as the correlation function or the source number counts, are in agreement with previous results indicating the statistical lensing nature of the selected sample.2019A&A...627A..31Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/627/A31CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/MNRAS/415/2336 : Herschel-ATLAS Science Demonstration Catalog (Rigby+, 2011)J/MNRAS/462/1910 : H-ATLAS NGP LOFAR radio catalogue (Hardcastle+, 2016)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/627/A31https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/627/A31http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/627/A31https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/627/A31https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/627/A31http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/627/A31GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/627/A31/gn19-g09 (SHALOS catalogue for the H-ATLAS GAMA09 field)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/627/A31/gn19-g09?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/627/A31/gn19-g09?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/627/A31/gn19-g09?GETtext/xml+votable180.050000true136.270368890.133526940.005555555555555556Cone search capability for table J/A+A/627/A31/gn19-g12 (SHALOS catalogue for the H-ATLAS GAMA12 field)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/627/A31/gn19-g12?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/627/A31/gn19-g12?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/627/A31/gn19-g12?GETtext/xml+votable180.050000true183.39554694-2.056418890.005555555555555556Cone search capability for table J/A+A/627/A31/gn19-g15 (SHALOS catalogue for the H-ATLAS GAMA15 field)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/627/A31/gn19-g15?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/627/A31/gn19-g15?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/627/A31/gn19-g15?GETtext/xml+votable180.050000true212.519636942.051873890.005555555555555556Cone search capability for table J/A+A/627/A31/gn19-ngp (SHALOS catalogue for the H-ATLAS NGP field)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/627/A31/gn19-ngp?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/627/A31/gn19-ngp?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/627/A31/gn19-ngp?GETtext/xml+votable180.050000true196.78464532.300896940.0055555555555555563/162 4/642-643 646 652 1365 1621-1622 1642 1685 1757 5/1024-1026 2565-2567 2578 2590 2612-2613 2616 2689 2692 5459 5468-5469 6397 6399 6483 6492 6501 6503 6512 6514 6562-6563 6739 6745 6748 6825-6828 6830 7007 7037 6/4112 8200 8202 8224 8894-8895 10247 10251 10253-10255 10257-10259 10304 10306 10316 10318-10319 10354 10366 10456-10458 10468-10470 10472-10474 10752-10753 10755 10761 10764-10766 10772 10776 21860-21861 21863 21869 21880-21881 25583 25593-25595 25911 25915 25917-25919 25925 25929 25931 25972-25974 25976-25978 25980 26001 26003 26052-26054 26060 26064 26246-26247 26264 26266 26288 26290-26291 26296 26947 26949-26951 26953 26996 27275 27277-27279 27288 27290 27297-27299 27324 27648-27650 27652 27656 28023 28026-28027 28101 28103 28145 28157 28159 40950-40951 40955 40957-40959 45054-450553.972892068905477e-22 1.9864425968556103e-21https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/627/A31?format=asciiInfrareddefaultJ/A+A/627/A31/gn19-g09SHALOS catalogue for the H-ATLAS GAMA09 fieldrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHATLASHATLAS IAU name, JHHMMSS.s+DDMMSSmeta.id;meta.maincharRAJ2000Right ascension (J2000.0)degpos.eq.ra;meta.mainDEJ2000Declination (J2000.0)degpos.eq.dec;meta.mainF250Best250um best fluxJyphot.flux.density;em.mm.400-750GHzfloate_F250Best250um 1 sigma best flux errorJystat.errorfloatF350Best350um best fluxJyphot.flux.density;em.mm.750-1500GHzfloate_F350Best350um 1 sigma best flux errorJystat.errorfloatF500Best500um best fluxJyphot.flux.density;em.mm.400-750GHzfloate_F500Best500um 1 sigma best flux errorJystat.errorfloatSimbadSimbad column added by the CDSmeta.ref.urlcharF100Best? 100um best fluxJyphot.flux.density;em.IR.60-100umfloatnullablee_F100Best? 100um 1 sigma best flux errorJystat.errorfloatnullableF160Best? 160um best fluxJyphot.flux.density;em.mm.1500-3000GHzfloatnullablee_F160Best? 160um 1 sigma best flux errorJystat.errorfloatnullableSepSPIRE-optical separationarcsecpos.angDistancefloatRelLR Reliabilitystat.likelihoodfloatGSQ[0/3]? GSQ flag (1)meta.code.classintnullableSDSSobjIdSDSS-II (DR7) or SDSS-III (DR9) IDmeta.idzphPhotometric redshift from ANNZsrc.redshiftfloate_zphError in zphstat.errorfloatzspSpectroscopic redshiftsrc.redshiftfloatzsmmSub-mm photometric redshiftsrc.redshift.photfloate_zsmmError in sub-mm zphstat.errorfloatnormsmmSED zph normalisationstat.fit.paramdoublee_normsmmError in SED normalisationstat.errordoubleLbolBolometric luminositysolLumphys.luminosityfloate_LbolError in bolometric luminositysolLumstat.errorfloatPratioFlux ratio probabilitystat.fit.goodnessfloatPposPositional probabilitystat.fit.goodnessfloatPzRedshift probabilitystat.fit.goodnessfloatPLbolLbol probabilitystat.fit.goodnessfloatPtotTotal probabilitystat.fit.goodnessfloatJ/A+A/627/A31/gn19-g12SHALOS catalogue for the H-ATLAS GAMA12 fielde_F100Best? 100um 1 sigma best flux errorJystat.errorfloatnullableF160Best? 160um best fluxJyphot.flux.density;em.mm.1500-3000GHzfloatnullablee_F160Best? 160um 1 sigma best flux errorJystat.errorfloatnullableSepSPIRE-optical separationarcsecpos.angDistancefloatRelLR Reliabilitystat.likelihoodfloatGSQ[0/3]? GSQ flag (1)meta.code.classintnullableSDSSobjIdSDSS-II (DR7) or SDSS-III (DR9) IDmeta.idzphPhotometric redshift from ANNZsrc.redshiftfloate_zphError in zphstat.errorfloatzspSpectroscopic redshiftsrc.redshiftfloatzsmmSub-mm photometric redshiftsrc.redshift.photfloate_zsmmError in sub-mm zphstat.errorfloatnormsmmSED zph normalisationstat.fit.paramdoublee_normsmmError in SED normalisationstat.errordoubleLbolBolometric luminositysolLumphys.luminosityfloate_LbolError in bolometric luminositysolLumstat.errorfloatPratioFlux ratio probabilitystat.fit.goodnessfloatPposPositional probabilitystat.fit.goodnessfloatPzRedshift probabilitystat.fit.goodnessfloatPLbolLbol probabilitystat.fit.goodnessfloatPtotTotal probabilitystat.fit.goodnessfloatSimbadSimbad column added by the CDSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHATLASHATLAS IAU name, JHHMMSS.s+DDMMSSmeta.id;meta.maincharRAJ2000Right ascension (J2000.0)degpos.eq.ra;meta.mainDEJ2000Declination (J2000.0)degpos.eq.dec;meta.mainF250Best250um best fluxJyphot.flux.density;em.mm.400-750GHzfloate_F250Best250um 1 sigma best flux errorJystat.errorfloatF350Best350um best fluxJyphot.flux.density;em.mm.750-1500GHzfloate_F350Best350um 1 sigma best flux errorJystat.errorfloatF500Best500um best fluxJyphot.flux.density;em.mm.400-750GHzfloate_F500Best500um 1 sigma best flux errorJystat.errorfloatF100Best? 100um best fluxJyphot.flux.density;em.IR.60-100umfloatnullableJ/A+A/627/A31/gn19-g15SHALOS catalogue for the H-ATLAS GAMA15 fieldHATLASHATLAS IAU name, JHHMMSS.s+DDMMSSmeta.id;meta.maincharSepSPIRE-optical separationarcsecpos.angDistancefloatRelLR Reliabilitystat.likelihoodfloatSimbadSimbad column added by the CDSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Right ascension (J2000.0)degpos.eq.ra;meta.mainDEJ2000Declination (J2000.0)degpos.eq.dec;meta.mainF250Best250um best fluxJyphot.flux.density;em.mm.400-750GHzfloate_F250Best250um 1 sigma best flux errorJystat.errorfloatF350Best350um best fluxJyphot.flux.density;em.mm.750-1500GHzfloate_F350Best350um 1 sigma best flux errorJystat.errorfloatF500Best500um best fluxJyphot.flux.density;em.mm.400-750GHzfloate_F500Best500um 1 sigma best flux errorJystat.errorfloatF100Best? 100um best fluxJyphot.flux.density;em.IR.60-100umfloatnullablee_F100Best? 100um 1 sigma best flux errorJystat.errorfloatnullableF160Best? 160um best fluxJyphot.flux.density;em.mm.1500-3000GHzfloatnullablee_F160Best? 160um 1 sigma best flux errorJystat.errorfloatnullableGSQ[0/3]? GSQ flag (1)meta.code.classintnullableSDSSobjIdSDSS-II (DR7) or SDSS-III (DR9) IDmeta.idzphPhotometric redshift from ANNZsrc.redshiftfloate_zphError in zphstat.errorfloatzspSpectroscopic redshiftsrc.redshiftfloatzsmmSub-mm photometric redshiftsrc.redshift.photfloate_zsmmError in sub-mm zphstat.errorfloatnormsmmSED zph normalisationstat.fit.paramdoublee_normsmmError in SED normalisationstat.errordoubleLbolBolometric luminositysolLumphys.luminosityfloate_LbolError in bolometric luminositysolLumstat.errorfloatPratioFlux ratio probabilitystat.fit.goodnessfloatPposPositional probabilitystat.fit.goodnessfloatPzRedshift probabilitystat.fit.goodnessfloatPLbolLbol probabilitystat.fit.goodnessfloatPtotTotal probabilitystat.fit.goodnessfloatJ/A+A/627/A31/gn19-ngpSHALOS catalogue for the H-ATLAS NGP fieldSimbadSimbad column added by the CDSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHATLASHATLAS IAU name, JHHMMSS.s+DDMMSSmeta.id;meta.maincharRAJ2000Right ascension (J2000.0)degpos.eq.ra;meta.mainDEJ2000Declination (J2000.0)degpos.eq.dec;meta.mainF250Best250um best fluxJyphot.flux.density;em.mm.400-750GHzfloate_F250Best250um 1 sigma best flux errorJystat.errorfloatF350Best350um best fluxJyphot.flux.density;em.mm.750-1500GHzfloate_F350Best350um 1 sigma best flux errorJystat.errorfloatF500Best500um best fluxJyphot.flux.density;em.mm.400-750GHzfloate_F500Best500um 1 sigma best flux errorJystat.errorfloatF100Best? 100um best fluxJyphot.flux.density;em.IR.60-100umfloatnullablee_F100Best? 100um 1 sigma best flux errorJystat.errorfloatnullableF160Best? 160um best fluxJyphot.flux.density;em.mm.1500-3000GHzfloatnullablee_F160Best? 160um 1 sigma best flux errorJystat.errorfloatnullableSepSPIRE-optical separationarcsecpos.angDistancefloatRelLR Reliabilitystat.likelihoodfloatGSQ[0/3]? GSQ flag (1)meta.code.classintnullableSDSSobjIdSDSS-II (DR7) or SDSS-III (DR9) IDmeta.idzphPhotometric redshift from ANNZsrc.redshiftfloate_zphError in zphstat.errorfloatzspSpectroscopic redshiftsrc.redshiftfloatzsmmSub-mm photometric redshiftsrc.redshift.photfloate_zsmmError in sub-mm zphstat.errorfloatnormsmmSED zph normalisationstat.fit.paramdoublee_normsmmError in SED normalisationstat.errordoubleLbolBolometric luminositysolLumphys.luminosityfloate_LbolError in bolometric luminositysolLumstat.errorfloatPratioFlux ratio probabilitystat.fit.goodnessfloatPposPositional probabilitystat.fit.goodnessfloatPzRedshift probabilitystat.fit.goodnessfloatPLbolLbol probabilitystat.fit.goodnessfloatPtotTotal probabilitystat.fit.goodnessfloat