J/A+A/567/A111ivo://CDS.VizieR/J/A+A/567/A111doi:10.26093/cds/vizier.35670111CDSMaturi M.Mizera S.Seidel G.2015-05-15T14:41:12Z2014-12-23T08:45:38ZCDS support team

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

cds-question@unistra.frastrometrytwo-color-diagramsredshiftedgravitational-lensingStrong gravitational lensing provides fundamental insights into the understanding of the dark matter distribution in massive galaxies, galaxy clusters and the background cosmology. Despite their importance, the number of gravitational arcs discovered so far is small. The urge for more complete, large samples and unbiased methods of selecting candidates is rising. A number of methods for the automatic detection of arcs have been proposed in the literature, but large amounts of spurious detections retrieved by these methods forces observers to visually inspect thousands of candidates per square degree in order to clean the samples. This approach is largely subjective and requires a huge amount of eye-ball checking, especially considering the actual and upcoming wide field surveys, which will cover thousands of square degrees. In this paper we study the statistical properties of colours of gravitational arcs detected in the 37deg^2^ of the CARS survey.2014A&A...567A.111Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/567/A111CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJ/749/38 : CFHTLS-SL2S-ARCS strong lens candidates (More+, 2012)http://www.ita.uni-heidelberg.de/~maturi/Public/arcs/ : Arc imageshttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/567/A111https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/567/A111http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/567/A111https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/567/A111https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/567/A111http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/567/A111GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/567/A111/arcs (Gravitational arc candidates in CFHTLS Archive Research Survey (CARS) (tables 2 & 3 of the paper))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/567/A111/arcs?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/567/A111/arcs?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/567/A111/arcs?GETtext/xml+votable180.050000true33.321667-6.4327780.0055555555555555565/4419 4422 4758 6/10741 10743 10745 10747 10750-10751 17668 17671 17681-17683 17685-17686 17692 17694 17712-17713 19021 19027 19030 19036-19038 19056 19060 36793 36795https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/567/A111?format=asciiOpticaldefaultJ/A+A/567/A111/arcsGravitational arc candidates in CFHTLS Archive Research Survey (CARS) (tables 2 & 3 of the paper)FieldName of the CARS fieldobs.fieldcharLenArc lengtharcsecphys.angSizefloatL/W[1.4/14] Arc length to width ratiophys.size.axisRatiofloatID[0/90] Identification name (arcNN[abc]) (1)meta.id;meta.mainintprimaryn_ID[abc] how the arc was found (1)meta.notecharRAJ2000Arc right ascension J2000pos.eq.ra;meta.mainDEJ2000Arc declination J2000pos.eq.dec;meta.mainCurve[0/1.1] Arc curvaturearcsec**-1src.morph.paramfloatArea[1/13] Arc areaarcsec**2phys.areafloatu*magArc u* magnitudemagphot.mag;em.opt.Ufloate_u*magArc u* magnitude 1-{sigma} errormagstat.error;phot.mag;em.opt.Ufloatg'magArc g' magnitudemagphot.mag;em.opt.Bfloate_g'magArc g' magnitude 1-{sigma} errormagstat.error;phot.mag;em.opt.Bfloatr'magArc r' magnitudemagphot.mag;em.opt.Rfloate_r'magArc r' magnitude 1-{sigma} errormagstat.error;phot.mag;em.opt.Rfloati'magarc i' magnitudemagphot.mag;em.opt.Ifloate_i'magArc i' magnitude 1-{sigma} errormagstat.error;phot.mag;em.opt.Ifloatzlens[0.26/0.82] Lens photometric redshiftsrc.redshift.photfloate_zlensLens redshift 1-{sigma} error (lower value)stat.errorfloatE_zlensLens redshift 1-{sigma} error (upper value)stat.error;stat.maxfloatRank[1/3] Arc ranking, 3=very likely (2)meta.code.qualintCatCatalog name of previously known arcs (3)meta.id;meta.tablechar