J/ApJ/893/65ivo://CDS.VizieR/J/ApJ/893/65doi:10.26093/cds/vizier.18930065CDSNavarro M.G.Contreras Ramos R.Minniti D.Pullen J.,Capuzzo-Dolcetta R.Lucas P.W.2022-01-19T11:43:07Z2021-09-28T14:26:10ZCDS support team

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

cds-question@unistra.frmilky-way-galaxygravitational-lensinginfrared-photometrysurveysWe search for microlensing events in the zero-latitude area of the Galactic Bulge using the VVV Survey near-IR data. We have discovered a total sample of N=630 events within an area covering 20.68deg^2^ between the years 2010 and 2015. In this paper, we describe the search and present the data for the final sample, including near-IR magnitudes, colors, and proper motions, as well as the standard microlensing parameters. We use the near-IR color-magnitude and color-color diagrams to select NRC=290 events with red-clump sources to analyze the extinction properties of the sample in the central region of the Galactic plane. The timescale distribution and its dependence in the longitude axis is presented. The mean timescale decreases as we approach the Galactic minor axis (b=0{deg}). Finally, we give examples of special microlensing events, such as binaries, short-timescale events, and events with a strong parallax effect.2020ApJ...893...65Nhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/893/65CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/eso : ESO Science Archive Catalog (ESO, 1991-2021)II/319 : UKIDSS-DR9 LAS, GCS and DXS Surveys (Lawrence+ 2012)II/337 : VISTA Variables in the Via Lactea Survey DR1 (Saito+, 2012)I/345 : Gaia DR2 (Gaia Collaboration, 2018)II/364 : VIRAC. The VVV Infrared Astrometric Catalogue (Smith+, 2019)J/AcA/50/1 : OGLE microlensing events in Galactic Bulge (Udalski+, 2000)J/ApJ/631/906 : MACHO Galactic Bulge microlensing events (Thomas+, 2005)J/ApJ/636/240 : OGLE II microlensing parameters (Sumi+, 2006)J/ApJ/711/L48 : 2008 OGLE Bulge microlensing alerts (Cohen+, 2010)J/ApJ/778/150 : Microlensing events from MOA-II (Sumi+, 2013)J/ApJS/216/12 : OGLE-III Gal. bulge microlensing events (Wyrzykowski+, 2015)J/MNRAS/457/4089 : Frequency of snowline-region planets (Shvartzvald+, 2016)J/MNRAS/464/1247 : VVV high PM stars. I. Ks<=13.5 stars (Kurtev+, 2017)J/ApJS/244/29 : Microlensing events toward the Galactic bulge (Mroz+, 2019)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/893/65https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/893/65http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/893/65https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/893/65https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/893/65http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/893/65GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/893/65/table2 (VVV Survey first quality microlensing events)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/893/65/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/893/65/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/893/65/table2?GETtext/xml+votable180.050000true259.9886011-36.77006350.005555555555555556Cone search capability for table J/ApJ/893/65/table3 (VVV Survey second quality microlensing events)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/893/65/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/893/65/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/893/65/table3?GETtext/xml+votable180.050000true260.3759588-37.42187750.0055555555555555565/7202-7203 7206 7225 7228 6/28802 28828 28830-28831 28849 28852-28853 28874-28875 28878-28879 28896-28897 28916 28918-28919 28924-28925 29090-29091 29096-29097 42439 42445 42450-42451 42454-42457 42460-42461 424637.952274030004205e-20 1.0188844282367877e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/893/65?format=asciiInfrareddefaultJ/ApJ/893/65/table2VVV Survey first quality microlensing eventsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTile[327/340] Tile numberobs.fieldintIDIdentifier (<[NCM2020] bNNN NNNNNN> or <[NCM2020] bNNN NNNNNN-NNNNNN> in Simbad; bNNN being the Tile number)meta.id;meta.maincharGLON[-9.94/10.4] Galactic longitudedegpos.galactic.lonGLAT[-0.5/0.7] Galactic latitudedegpos.galactic.latKsmag[10.7/17.7]? Apparent Ks band magnitude; baselinemagphot.mag;em.IR.Kfloatnullablel_J-KLimit flag on J-Kmeta.code.error;phot.color;em.IR.JcharJ-K[0.4/8.8]? The (J-K) color indexmagphot.color;em.IR.J;em.IR.KfloatnullableAmp[0.13/3.8]? Amplitudemagphot.magfloatnullableu0[0/1.7] Minimum impact parameter in Einstein radiisrc.impactParam;stat.minfloatl_u0Upper limit on u0 uncertaintymeta.code.errorchare_u0[0/2] Uncertainty in u0stat.errorfloatt0[55389.9/57282.8] MJD of maximum magnificationdtime.epoch;stat.maxdoublee_t0[0/327] Uncertainty in t0dstat.errorfloattE[3.5/750] Einstein radius crossing timedtime.epochfloatl_tEUpper limit on tE uncertaintymeta.code.errorchare_tE[0.49/636] Uncertainty in tEdstat.errorfloatfbl[0/1] Blending parameterphys.luminosity;arith.ratiofloatl_fblUpper limit on fblmeta.code.errorchare_fbl[0/20] Uncertainty in fblstat.errorfloat_RA.icrsRight ascension (ICRS) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services)degpos.eq.ranullableindexed_DE.icrsDeclination (ICRS) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services)degpos.eq.decnullableindexedJ/ApJ/893/65/table3VVV Survey second quality microlensing eventsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTile[327/340] Tile numberobs.fieldintIDIdentifier (<[NCM2020] bNNN NNNNNN> in Simbad)meta.id;meta.mainintGLON[-9.94/10.5] Galactic longitudedegpos.galactic.lonGLAT[-0.5/0.7] Galactic latitudedegpos.galactic.latKsmag[9.18/17.7] Apparent Ks band magnitude; baselinemagphot.mag;em.IR.Kfloat_RA.icrsRight ascension (ICRS) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services)degpos.eq.ranullableindexed_DE.icrsDeclination (ICRS) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services)degpos.eq.decnullableindexed