J/AJ/155/46ivo://CDS.VizieR/J/AJ/155/46doi:10.26093/cds/vizier.51550046CDSBaravalle L.D.Alonso M.V.Castellon J.L.N.Beamin J.C.Minniti D.2018-10-22T08:01:53Z2018-10-03T12:50:55ZCDS support team

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

cds-question@unistra.frgalaxiescatalogsinfrared-photometrygalaxy-classification-systemsWe search for extragalactic sources in the VISTA Variables in the Via Lactea survey that are hidden by the Galaxy. Herein, we describe our photometric procedure to find and characterize extragalactic objects using a combination of SExtractor and PSFEx. It was applied in two tiles of the survey: d010 and d115, without previous extragalactic IR detections, in order to obtain photometric parameters of the detected sources. The adopted criteria to define extragalactic candidates include CLASS_STAR<0.3; 1.0<R_1/2_<5.0 arcsec; 2.1<C<5; and {Phi}>0.002 and the colors: 0.5<(J-K_s_)<2.0 mag; 0.0<(J-H)<1.0 mag; 0.0<(H-K_s_)<2.0 mag and (J-H)+0.9(H-K_s_)>0.44 mag. We detected 345 and 185 extragalactic candidates in the d010 and d115 tiles, respectively. All of them were visually inspected and confirmed to be galaxies. In general, they are small and more circular objects, due to the near-IR sensitivity to select more compact objects with higher surface brightness. The procedure will be used to identify extragalactic objects in other tiles of the VVV disk, which will allow us to study the distribution of galaxies and filaments hidden by the Milky Way.2018AJ....155...46Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/155/46CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/337 : VISTA Variables in the Via Lactea Survey DR1 (Saito+, 2012)II/352 : The VISTA Hemisphere Survey (VHS) catalog (McMahon+, 2013)II/348 : VISTA Variable in the Via Lactea Survey DR2 (Minniti+, 2017)J/A+AS/141/123 : Galaxies behind Southern Milky Way (Kraan-Korteweg 2000)J/A+A/380/441 : Galaxies behind Southern Milky Way. II. (Woudt+, 2001)J/AJ/144/127 : 204 galaxy candidates from VVV infrared photometryhttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/155/46https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/155/46http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/155/46https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/155/46https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/155/46http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/155/46GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/155/46/table1 (Photometric catalog of extragalactic candidates)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/155/46/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/155/46/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/155/46/table1?GETtext/xml+votable180.050000true176.0792917-60.50719440.0055555555555555565/9477 6/41665 41667 41668 416707.952274030004205e-20 1.7798557115773645e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/155/46?format=asciiInfraredOpticaldefaultJ/AJ/155/46/table1Photometric catalog of extragalactic candidatesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintVVVVVV designation (JHHMMSS.ss+DDMMSS.s)meta.id;meta.maincharRAJ2000Hour of Right Ascension (J2000.0)pos.eq.ra;meta.mainDEJ2000Degree of Declination (J2000.0)pos.eq.dec;meta.mainZmag[13.76/19.54]? PSF Z band magnitudemagphot.mag;em.opt.IfloatnullableYmag[13.98/19.04]? PSF Y band magnitudemagphot.mag;em.IR.JfloatnullableJmag[13.63/19.13]? PSF J band magnitudemagphot.mag;em.IR.JfloatnullableHmag[13.22/17.64] PSF H band magnitudemagphot.mag;em.IR.HfloatKsmag[13.18/16.65] PSF K_s_ band magnitudemagphot.mag;em.IR.KfloatZmag2[14.09/19.39]? Z band aperture magnitude within a diameter of 2 arcsecmagphot.mag;em.opt.IfloatnullableYmag2[14.22/18.88]? Y band aperture magnitude within a diameter of 2 arcsecmagphot.mag;em.IR.JfloatnullableJmag2[13.83/18.72] J band aperture magnitude within a diameter of 2 arcsecmagphot.mag;em.IR.JfloatHmag2[13.29/17.32] H band aperture magnitude within a diameter of 2 arcsecmagphot.mag;em.IR.HfloatKsmag2[13.11/16.71] K_s_ band aperture magnitude within a diameter of 2 arcsecmagphot.mag;em.IR.KfloatR1/2[1.01/4.87] Half-light radius R_1/2_arcsecphys.angSize;srcfloatC[2.1/4.44] Concentration indexmeta.code;spect.indexfloate[0.01/0.78] Ellipticity {epsilon}src.ellipticityfloatn[0.3/9.79] Spheroid Sersic indexstat.fit.paramfloatComComment(s) about the object morphology and the contamination by nearby stars (1)src.morphchar