J/A+A/698/A214ivo://CDS.VizieR/J/A+A/698/A214doi:10.26093/cds/vizier/bc-nt/lcbeCDSGaldeano D.Coldwell G.Alonso S.Duplancic F.Lucas P.W.Fernandez J.,Perez N.Pereyra L.Mesa V.Minniti D.Smith L.C.Zarate F.M.2026-08-03T06:54:58Z2025-06-17T08:42:13ZCDS support team

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

cds-question@unistra.frgalaxiesinfrared-sourcesinfrared-photometrygalaxy-classification-systemsThe detection of extragalactic sources beyond the Milky Way is limited by the location of solar system. In the Zone of Avoidance (ZOA), optical observations are hindered by stellar crowding and Galactic absorption. To fully understand the background galaxy population in this region, observations at longer wavelengths are needed. The objective of this study is to determine the characteristics of galaxies situated behind the Milky Way bulge through the use of near-infrared (NIR) data obtained from the VISTA Variables in Via Lactea (VVV) survey. The galaxy candidates were visually confirmed, and a morphological classification of all sources was performed based on their appearance, differentiating between elliptical, spiral, undefined, and doubtful galaxies. Additionally, the surrounding area was classified based on the number of sources detected in the same target field. Isolated galaxies, galaxies with close companions, and galaxies in denser environments were catalogued. Following a visual inspection, 14480 galaxy candidates were classified morphologically: 3702 as elliptical, 1704 as spiral, 6425 as undefined, and 2649 as doubtful. Environmental classification showed that 73.9% were isolated, 12.4% had close companions, and 13.7% were in denser environments. Our catalogue shows slower proper motions than star catalogues. The majority of galaxies classified as elliptical and spiral manifest SExtractor parameters that are indicative of this category of sources. Additionally, elliptical galaxies in denser environments appear redder than spiral galaxies in isolated environments. A total of 14480 galaxy candidates were subjected to a morphological classification in the Milky Way bulge region. This result verifies the efficacy of the VVV/VVVX survey in identifying and characterising a diverse range of galaxies and extragalactic structures that are obscured by the Milky Way, thereby contributing to a more profound understanding of the universe in the ZOA.2025A&A...698A.214Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/698/A214CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/348 : VISTA Variable in the Via Lactea Survey DR2 (Minniti+, 2017)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/698/A214https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/698/A214http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/698/A214https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/698/A214https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/698/A214http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/698/A214GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/698/A214/catalog (Catalogue of VVV galaxies behind the Milky Way)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/698/A214/catalog?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/698/A214/catalog?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/698/A214/catalog?GETtext/xml+votable180.050000true254.9539167-34.18208330.0055555555555555563/448 4/1796 1798-1799 5/7190-7191 7210-7211 7214 7220-7221 7226 7230 7234 7240-7242 7264 7266 7301 7312-7313 7317 7319 10583 10589-10591 10619-10620 10622-10623 11946 6/28754-28755 28758-28759 28804-28805 28816-28817 28820-28821 28823 28833-28835 28837-28838 28861-28866 28868-28870 28888 28892-28893 28898 28910-28911 28924 28926-28927 28940 28942-28943 28972-28974 29060 29062 29185 29188-29189 29200-29201 29261 29266-29267 29272-29273 42325-42327 42353 42355 42448-42449 42452-42453 42469-42471 42485-42487 42837 47788 47790-47791 47802-47803 47806-47807 478507.952274030004205e-20 1.0188844282367877e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/698/A214?format=asciiOpticalInfrareddefaultJ/A+A/698/A214/catalogCatalogue of VVV galaxies behind the Milky WayrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameUnique identifier (VVVJHHMMSS.ss+DDMMSS.s)meta.id;meta.maincharRAJ2000Right ascension (J2000.0)pos.eq.ra;meta.mainindexedDEJ2000Ceclination (J2000.0)pos.eq.dec;meta.mainZmag3Aperture magnitude within 3 pixels in Zmagphot.mag;em.opt.Ifloate_Zmag3Error on Aperture magnitude within 3 pixels in Zmagstat.error;pos.cartesian.zfloatZmagTotal magnitude in Zmagphot.mag;em.opt.Ifloate_ZmagError on Total magnitude Zmagstat.error;phot.magfloatYmag3Aperture magnitude within 3 pixels in Ymagphot.mag;em.IR.Jfloate_Ymag3Error on Aperture magnitude within 3 pixels in Ymagstat.errorfloatYmagTotal magnitude in Ymagphot.mag;em.IR.Jfloate_YmagError on Total magnitude Ymagstat.error;phot.magfloatJmag3Aperture magnitude within 3 pixels in Jmagphot.mag;em.IR.Jfloate_Jmag3Error on Aperture magnitude within 3 pixels in Jmagstat.error;phot.magfloatJmagTotal magnitude in Jmagphot.mag;em.IR.Jfloate_JmagError on Total magnitude Jmagstat.error;phot.magfloatHmag3Aperture magnitude within 3 pixels in Hmagphot.mag;em.IR.Hfloate_Hmag3Error on Aperture magnitude within 3 pixels in Hmagstat.error;phot.magfloatHmagTotal magnitude in Hmagphot.mag;em.IR.Hfloate_HmagError on Total magnitude Hmagstat.error;phot.magfloatKsmag3Aperture magnitude within 3 pixels in Ksmagphot.mag;em.IR.Kfloate_Ksmag3Error on Aperture magnitude within 3 pixels in Ksmagstat.error;phot.magfloatKsmagTotal magnitude in Ksmagphot.mag;em.IR.Kfloate_KsmagError on Total magnitude Ksmagstat.error;phot.magfloatrhalfHalf light radiusarcsecphys.size.radiusfloatCS[0/0.5] Class Star (0: galaxy, 1: star)meta.codefloatMType[1/88] Morphological type (1)src.morph.typeintEnv[0124] Environment (2)meta.notechar