Astrometric Microlensing Events Predicted from Gaia DR2plc2.dataivo://org.gavo.dc/amlensing/q2/dataThe GAVO DC teamKlüter, J.Demleitner, M.Proft, S.2018-10-22T00:00:00ZGAVO Data Center TeamMönchhofstrasse 12-14, D-69120 Heidelberggavo@ari.uni-heidelberg.de++49 6221 54 1837catalogsastrometric-microlensing-effectThe final candidate table for astrometric microlensing events
predicted from Gaia DR2. This has estimates of minimal distances,
epochs, etc. Columns prefixed with lens_ are for the lens, columns
prefixed with ob_ are for the lensed object.http://dc.zah.uni-heidelberg.de/tableinfo/plc2.dataGaiaOpticalplc2Astrometric Microlensing Events Predicted from Gaia DR2 From the Gaia DR2 catalogue we predict astrometric microlensing
events by foreground stars with high proper motion (µ_tot >150mas/yr)
passing a background source in the next decades. Using Gaia DR2
photometry we determine an approximate mass of the lens, which we use
to calculate the expected microlensing effects. This yields 3914
microlensing events by 2875 different lenses between 2010 and 2065
with expected shifts larger than 0.1 mas between the lensed and
unlensed positions of the source. 513 of those are expected to happen
between 2014.5 - 2026.5 and might be measured by Gaia. For 127 events
we also expect a magnification between 1 mmag and 3 mag.
plc2.dataThe final candidate table for astrometric microlensing events
predicted from Gaia DR2. This has estimates of minimal distances,
epochs, etc. Columns prefixed with lens_ are for the lens, columns
prefixed with ob_ are for the lensed object.3914event_idUnique identifier of this event. This is the decimal representation of the Gaia DR2 source_id of the lens, and a disambiguator for the lensed object.meta.id;meta.maincharindexedprimarylens_idGaia DR2 source_id of the lens.meta.idlonglens_raGaia DR2 RA of the lensdegpos.eq.ra;meta.maindoubleindexednullablelens_decGaia DR2 Declication of the lensdegpos.eq.dec;meta.maindoubleindexednullablelens_err_raError of lens__ra from Gaia DR2degstat.error;pos.eq.ra;meta.mainfloatnullablelens_err_decError of lens__dec from Gaia DR2degstat.error;pos.eq.dec;meta.mainfloatnullablelens_pmraProper motion in RA of the lens from Gaia DR2deg/yrpos.pm;pos.eq.rafloatnullablelens_pmdecProper motion in Declination of the lens from Gaia DR2deg/yrpos.pm;pos.eq.rafloatnullablelens_err_pmraError of lens_pmra from Gaia DR2deg/yrpos.pm;pos.eq.rafloatnullablelens_err_pmdecError of lens_pmdec from Gaia DR2deg/yrpos.pm;pos.eq.decfloatnullablelens_parallaxParallax of the lens from Gaia DR2degpos.parallaxfloatnullablelens_err_parallaxStandard error of the parallax the lens from Gaia DR2degstat.error;pos.parallaxfloatnullablelens_phot_g_mean_magMean magnitude of the lens in the integrated G band from Gaia DR2.magphot.mag;em.opt.Vfloatnullablelens_phot_rp_mean_magMean magnitude of the lens in the integrated RP band from Gaia DR2.magphot.mag;em.opt.Rfloatnullablelens_phot_bp_mean_magMean magnitude of the lens in the integrated BP band from Gaia DR2.magphot.mag;em.opt.Bfloatnullableob_idGaia DR2 source_id of the lensed object.meta.idlongob_raGaia DR2 RA of the lensed objectdegpos.eq.radoublenullableob_decGaia DR2 Declication of the lensed objectdegpos.eq.decdoublenullableob_err_raError of ob__ra from Gaia DR2degstat.error;pos.eq.rafloatnullableob_err_decError of ob__dec from Gaia DR2degstat.error;pos.eq.decfloatnullableob_pmraProper motion in RA of the lensed object from Gaia DR2deg/yrpos.pm;pos.eq.rafloatnullableob_pmdecProper motion in Declination of the lensed object from Gaia DR2deg/yrpos.pm;pos.eq.rafloatnullableob_err_pmraError of ob_pmra from Gaia DR2deg/yrpos.pm;pos.eq.rafloatnullableob_err_pmdecError of ob_pmdec from Gaia DR2deg/yrpos.pm;pos.eq.decfloatnullableob_parallaxParallax of the lensed object from Gaia DR2degpos.parallaxfloatnullableob_err_parallaxStandard error of the parallax the lensed object from Gaia DR2degstat.error;pos.parallaxfloatnullableob_phot_g_mean_magMean magnitude of the lensed object in the integrated G band from Gaia DR2.magphot.mag;em.opt.Vfloatnullableob_phot_rp_mean_magMean magnitude of the lensed object in the integrated RP band from Gaia DR2.magphot.mag;em.opt.Rfloatnullableob_phot_bp_mean_magMean magnitude of the lensed object in the integrated BP band from Gaia DR2.magphot.mag;em.opt.Bfloatnullablestar_typeType of the lensing star: WD = White Dwarf, MS = Main Sequence, RG = Red Giant, BD = Brown Dwarfsrc.classcharnullablemassEstimated mass of the lens from Gaia DR2solMassphys.massfloatnullableerr_massError in the mass of the lens from Gaia DR2solMassstat.error;phys.massfloatnullabletheta_eEinstein radius of the eventmasphys.angsizedoublenullableerr_theta_eError in the Einstein radius of the eventmasstat.error;phys.angsizefloatnullabletime_scaleApproximate duration of the eventyrtime.durationdoublenullabletcaEstimated time of the closest approach.yrtime.epochdoublenullableerr_tcaError in tca.yrstat.error;time.epochfloatnullabledistEstimated distance at closest approach.maspos.angdistancefloatnullableerr_distError d_min.masstat.error;pos.angdistancefloatnullableuEstimated distance at closest approach in Einstein radii.doublenullableerr_uError in u.floatnullableshiftMaximal astrometric shift of the center of light.maspos;arith.diffdoublenullableerr_shiftError in shiftmasstat.error;pos;arith.difffloatnullableshift_lumMaximal astrometric shift including lens-luminosity effects.maspos;arith.diffdoublenullableerr_shift_lumError in shift_lum.masstat.error;pos;arith.difffloatnullableshift_plusMaximal astrometric shift of brighter image.maspos;arith.diffdoublenullableerr_shift_plusError in shift_plus.masstat.error;pos;arith.difffloatnullablemagnificationMaximal magnification.magphot.mag;arith.ratiodoublenullableerr_magnificationError in magnification.magstat.error;phot.mag;arith.ratiofloatnullablel2_tcaEstimated time of the closest approachas seen from Earth-Sun L2 point.yrtime.epochdoublenullablel2_err_tcaError in l2_tca.yrstat.error;time.epochfloatnullablel2_distEstimated distance at closest approachas seen from Earth-Sun L2 point.maspos.angdistancefloatnullablel2_err_distError l2_d_min.masstat.error;pos.angdistancefloatnullablel2_uEstimated distance at closest approach in Einstein radiias seen from Earth-Sun L2 point.doublenullablel2_err_uError in l2_u.floatnullablel2_shiftMaximal astrometric shift of the center of lightas seen from Earth-Sun L2 point.maspos;arith.diffdoublenullablel2_err_shiftError in l2_shiftmasstat.error;pos;arith.difffloatnullablel2_shift_lumMaximal astrometric shift including lens-luminosity effectsas seen from Earth-Sun L2 point.maspos;arith.diffdoublenullablel2_err_shift_lumError in l2_shift_lum.masstat.error;pos;arith.difffloatnullablel2_shift_plusMaximal astrometric shift of brighter imageas seen from Earth-Sun L2 point.maspos;arith.diffdoublenullablel2_err_shift_plusError in l2_shift_plus.masstat.error;pos;arith.difffloatnullablel2_magnificationMaximal magnificationas seen from Earth-Sun L2 point.magphot.mag;arith.ratiodoublenullablel2_err_magnificationError in l2_magnification.magstat.error;phot.mag;arith.ratiofloatnullable