J/A+A/668/A73ivo://CDS.VizieR/J/A+A/668/A73doi:10.26093/cds/vizier.36680073CDSRojas K.Savary E.Clement B.Maus M.Courbin F.Lemon C.Chan J.H.H.,Vernardos G.Joseph R.Canameras R.Galan A.2023-11-21T16:23:42Z2022-12-06T09:32:11ZCDS support team

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

cds-question@unistra.frsurveysgravitational-lensingWe present our search for strong lens, galaxy-scale systems in the first data release of the Dark Energy Survey (DES), based on a color-selected parent sample of 18745029 luminous red galaxies (LRGs). We used a convolutional neural network (CNN) to grade this LRG sample with values between 0 (non-lens) and 1 (lens). Our training set of mock lenses is data-driven, that is, it uses lensed sources taken from HST-COSMOS images and lensing galaxies from DES images of our LRG sample. A total of 76582 cutouts were obtained with a score above 0.9, which were then visually inspected and classified into two catalogs. The first one contains 405 lens candidates, of which 90 present clear lensing features and counterparts, while the other 315 require more evidence, such as higher resolution imaging or spectra, to be conclusive. A total of 186 candidates are newly identified by our search, of which 16 are among the 90 most promising (best) candidates. The second catalog includes 539 ring galaxy candidates. This catalog will be a useful false positive sample for training future CNNs. For the 90 best lens candidates we carry out color-based deblending of the lens and source light without fitting any analytical profile to the data. This method is shown to be very efficient in the deblending, even for very compact objects and for objects with a complex morphology. Finally, from the 90 best lens candidates, we selected 52 systems with one single deflector to test an automated modeling pipeline that has the capacity to successfully model 79% of the sample within an acceptable computing runtime.2022A&A...668A..73Rhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/668/A73CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/357 : The Dark Energy Survey (DES): Data Release 1 (Abbott+, 2018)II/371 : The Dark Energy Survey (DES): Data Release 2 (Abbott+, 2021)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/668/A73https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/668/A73http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/668/A73https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/668/A73https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/668/A73http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/668/A73GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/668/A73/table1 (Strong lens (SL) candidates)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/668/A73/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/668/A73/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/668/A73/table1?GETtext/xml+votable180.050000true9.36280306-41.530541940.005555555555555556Cone search capability for table J/A+A/668/A73/table2 (Maybe lens (ML) candidates)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/668/A73/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/668/A73/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/668/A73/table2?GETtext/xml+votable180.050000true55.37833111-51.512411110.005555555555555556Cone search capability for table J/A+A/668/A73/table3 (Ring galaxies candidates)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/668/A73/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/668/A73/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/668/A73/table3?GETtext/xml+votable180.050000true22.66680611-16.019598890.0055555555555555565/4355 4713 8849 11546 6/9-11 16388 16390 16392 16397 16403 16408 16413 16460 16462 16466 16468 16471-16472 16481 16483 16497 16499 16503 16653 16670 16673 16675 16682 16685 16696 16698 16706 16722 16726 16740-16741 16746 16750 16762 16767 16833 16836 17368 17392-17393 17405 17444-17445 17452 17456 17460 17463 17469 17474 17476 17479 17481-17482 17488 17498-17499 17506 17511 17517 17520 17523 17534 17599 17631 17635 17641 17643 17647 17666-17667 17675 17679 17703 17705 17708 17721 17724 17735 17747 17753 17761-17762 17769 17772 17781 17784 17795 17810 17816 17829-17830 17836 17842 17853-17854 17866 17869 17876 17878 17892 17938 17946 17958 17975 17979 17983 18014 18019 18021 18033 18053 18060 18073-18074 18079 18089-18090 18094 18096 18102 18104 18109-18110 18132 18151 18196 18208 18687 18747 18751 18767 18777 18781-18782 18785 18787-18788 18802 18829 18841 18845 18856 18862 18866 18882-18883 19029 19031 19036 19038 19040 19055 19091 19096 19098-19099 19110 19460 20482 20484 20514 20517 20527 20540 20543 20610 20625 20642 20644 20646 20650 20653 20670 20674 20716 20718 21003 21012 21033-21034 21039 21041-21043 21046 21049 21051 21063-21064 21121 21130 21132 21137-21138 21162-21163 21166-21167 22528 33129 33132 33146 33199 33213-33214 33218 33238 33241-33243 33245 33254 33260 33271-33272 33391 33395 33453 33458 33460 33462 33474 33490 33494 33496 33506 33523 33544 33556-33557 33589 33592 33594 33600 33607 33610 33619-33621 33623 33629-33631 33637 33641 33656 33664 33676 33684-33685 33695 33703 33714 33725 33727 33731 33734 33740 33748 33752 33761 33767 33769-33770 33776-33777 33787 33813 33815 33821 33840 33844 33849 33852-33853 33883 33899 33901 33903 33923-33925 33950 33954-33955 33961 33963 33966 33973 33978 33982 33987 33991 33994 34010 34013 34036 34056 34074-34075 34089 34092 34097 34100 34102-34103 34119 34131 34136 34139 34144 34152-34153 34162 34167 34169 34175 34181-34183 34185 34188-34189 34191 34194 34208 34223 34227 34238-34239 34256 34261 34281 34304-34305 34318 34329 34336 34346 34355 34357 34368 34376 34385 34391 34396-34398 34406 34414-34415 34418 34423 34437 34442 34449 34459 34468 34473 34476 34485 34488-34490 34501 34510-34512 34517 34524 34528 34532 34546 34550 34563 34567 34570 34576 34586 34590 34592 34597 34600 34607-34608 34615 34618 34620-34621 34625 34648 34651 34657 34661 34663 34668 34684 34687 34691 34696 34707 34713 34722 34726 34737 34744-34746 34750 34760 34768-34769 34776 34779 34787 34792-34793 34809 34811 34814 34825-34826 34831 34836 34838 34848 34854 34856 34860 34862-34863 34866 34890 34899 34905 34907 34927 34944 34952 34958 34961 34965 34968 34978-34979 34990 34992-34993 35001 35003 35016 35018 35026 35043 35061-35062 35081 35085 35114-35115 35130 35146 35159 35167-35168 35171 35192 35197 35200 35204 35207-35208 35214 35216 35218 35224 35227-35228 35230 35232 35240 35249 35257 35260 35269 35271 35277 35291 35307 35315 35323 35331 35335 35338 35341 35349 35366 35374 35382-35383 35387 35394 35410-35411 35413-35414 35435 35438 35447 35454 35466-35468 35478 35484 35487 35493 35503-35504 35516-35517 35528 35540 35544 35561 35564-35565 35568 35571-35572 35574 35580 35583 35592 35596-35597 35604 35606 35620 35625 35632 35639 35641 35643 35658-35659 35683 35691 35694 35707 35720 35729 35749-35751 35772-35773 35776 35793 35795 35797 35805 35817 35823 35826 35835 35849 35856-35858 35860-35862 35877 35888 35891 35893 35904 35910 35916 35918 35921 35935 35945 35949-35950 35955 35960 35963-35964 35971 35983 35993 35995 36001 36016-36017 36020 36023 36028 36042 36044 36048 36057 36064 36066 36073 36087 36105 36107 36110-36111 36119-36122 36124-36125 36132 36139 36147 36156 36162-36163 36168 36180 36182 36184 36193 36200-36201 36203 36209 36211 36218 36225 36228 36232 36236 36241-36242 36246 36248 36251-36252 36258 36270-36271 36284 36293 36300 36303-36304 36307 36309-36310 36315 36322 36332 36338 36361-36362 36366 36375 36382 36384 36388-36390 36396 36409 36417 36429 36455 36463 36470 36475 36485 36489 36493 36506 36512 36514 36520 36525 36535 36540 36543 36563 36578 36591 36645 36647 36650-36651 36655 36659 36743 36765-36766 36775 36783-36784 36796 36798 36803 36815 36832 36834 36839 36844 38952 39042 39049-39052 39054 39073-39074 39459 39463-39464 39466-39468 39552 39555 39557 39594 39598-39599 45426 45429 45500 45503 45520 45524 45549 45559-45560 45563 45661 45830 45844 45848 45861 45881 45888 45930 45939 45962 45976 45980 46002 46012 46014 46016 46029 46035 46058 46078 46085-46086 46088-46089 46093 46097 46099 46104 46108 46115 46117 46135 46167 46171 46175 46178 46183 46196 46211 46220 46231-46234 46278 46283 46303 46309 46311 46317-46318 46320 46322 46342-46343 46348 46361 46365 46377 46381 46383 46391 46398 46409 46423 46436 46469 46475-46476 46491 46498 46504 46507 46512 46599 46613 46644-46645 46660-46661 46674-46675 46677-46678 46690-46691 46696 46725 46730 46746 46748 46754 46760 47447 47472https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/668/A73?format=asciidefaultJ/A+A/668/A73/table1Strong lens (SL) candidatesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintModindicates model data in table 4meta.ref.urlcharCandCandidate name (DES JHHMMSS+DDMMSS)meta.id;meta.maincharprimaryRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainSCnn[0.8/1.0] Cnn score (G1)stat.fit.goodnessfloatVISL[0/1] Visual inspection score (G1)stat.fit.goodnessfloatRefReferences (SL or ML) in refs.dat filemeta.ref;meta.filecharDES2Display the DES 2 data (Abbott et al. 2021, Cat. II/371)meta.ref.urlcharJ/A+A/668/A73/table2Maybe lens (ML) candidatesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintCandCandidate name (DES JHHMMSS+DDMMSS)meta.id;meta.maincharRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainSCnn[0.8/1.0] Cnn score (G1)stat.fit.goodnessfloatVISL[0/1] Visual inspection score (G1)stat.fit.goodnessfloatRefReferences (SL or ML) in refs.dat filemeta.ref;meta.filecharDES2Display the DES 2 data (Abbott et al. 2021, Cat. II/371)meta.ref.urlcharJ/A+A/668/A73/table3Ring galaxies candidatesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintCandCandidate name (DES JHHMMSS+DDMMSS)meta.id;meta.maincharRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainSCnn[0.9/1.0] Cnn score (G1)stat.fit.goodnessfloatVISR[0.28/1.0] Visual inspection score (G1)stat.fit.goodnessfloatDES2Display the DES 2 data (Abbott et al. 2021, Cat. II/371)meta.ref.urlcharJ/A+A/668/A73/table4Strong lensing modelqmAxis ratiophys.size.axisRatiofloatE_gammaextError on gammaext (upper value)stat.error;stat.maxfloate_gammaextError on gammaext (lower value)stat.errorfloatphiextangle of external sheardegpos.posAngintE_phiextError on phiext (upper value)degstat.error;stat.maxinte_phiextError on phiext (lower value)degstat.errorintCandCandidate name (DES JHHMMSS+DDMMSS)meta.id;meta.maincharn_Cand[*] * for model result after manually redoing the maskmeta.notecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintrchi2Reduced chi2 of the modelstat.fit.chi2floatREEinstein radiusarcsecphys.angSize;srcfloatE_REError on RE (upper value)arcsecstat.error;stat.maxfloate_REError on RE (lower value)arcsecstat.errorfloatE_qmError on qm ratio (upper value)stat.error;stat.maxfloate_qmError on qm ratio (lower value)stat.errorfloatPAmPosition angle of the lens mass SIE modeldegpos.posAng;meta.modelledintE_PAmError on PAm (upper value)degstat.error;stat.maxinte_PAmError on PAm (lower value)degstat.errorintgammaextstrength of external shearstat.fit.paramfloatJ/A+A/668/A73/refsReferencesComCommentsmeta.notecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRefReference codemeta.notecharBibCodeBibCodemeta.bib.bibcodecharAutAuthor's namemeta.bib.authorchar