Prediction of microlensing events with Gaia EDR3 J/AJ/163/176 ivo://CDS.VizieR/J/AJ/163/176 doi:10.26093/cds/vizier.51630176 CDS Kluter J. Bastian U. Demleitner M. Wambsganss J. 2022-09-30T22:23:43Z 2022-05-30T06:59:27Z CDS support team CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France cds-question@unistra.fr gravitational-lensing astrometry proper-motions visible-astronomy trigonometric-parallax Astrometric microlensing is a unique tool to measure stellar masses. It allows us to determine the mass of the lensing star with an accuracy of a few percent. In this paper, we update, extend, and refine our predictions of astrometric-microlensing events based on Gaia's early Data release 3 (EDR3). We selected about 500.000 high-proper-motion stars from Gaia EDR3 with {mu}tot>100mas/yr and searched for background sources close to their paths. We applied various selection criteria and cuts in order to exclude spurious sources and co-moving stars. By forecasting the future positions of lens and source, we determined epoch of and angular separation at closest approach, and determined an expected positional shift and magnification. Using Gaia EDR3, we predict 1758 new microlensing events with expected shifts larger than 0.1mas between the epochs J2010.5 and mid J2066.0. Further, we provide more precise information on the angular separation at closest approach for 3084 previously predicted events. This helps to select better targets for observations, especially for events that occur within the next decade. Our search lead to the new prediction of an interesting astrometric-microlensing event by the white dwarf Gaia EDR3-4053455379420641152. In 2025 it will pass by a G=20.25mag star, which will lead to a positional shift of the major image of {delta}{theta}_+_=1.2_-0.5_^+2.0^mas. Since the background source is only {Delta}G=2.45mag fainter than the lens, also the shift of the combined center of light will be measurable, especially using a near-infrared filter, where the background star is brighter than the lens ({Delta}Ks=-1.1mag). 2022AJ....163..176K https://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/163/176 Catalog Research IsServedBy TAP VizieR generic service IsServedBy Conesearch service related-to I/337 : Gaia DR1 (Gaia Collaboration, 2016) I/345 : Gaia DR2 (Gaia Collaboration, 2018) II/364 : VIRAC. The VVV Infrared Astrometric Catalogue (Smith+, 2019) VII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006) I/350 : Gaia EDR3 (Gaia Collaboration, 2020) J/other/A+ARV/18.67 : Accurate masses and radii of normal stars (Torres+, 2010) J/A+A/618/A44 : Predicted microlensing events from Gaia DR2 (Bramich, 2018) J/AcA/68/183 : Predicted Microlensing Events 21st Century (Bramich+, 2018) J/A+A/617/A135 : 20 years of photometric microlensing (Mustill+, 2018) J/AcA/68/351 : Predicted Microlensing Events by nearby VLM (Nielsen+ 2018) J/A+A/649/A6 : Gaia Catalogue of Nearby Stars GCNS (Gaia collaboration, 2021) https://cds.unistra.fr/vizier-org/licences_vizier.html https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/163/176 https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/163/176 http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/163/176 https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/163/176 https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/163/176 http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/163/176 GET text/xml+votable https://tapvizier.cds.unistra.fr/TAPVizieR/tap Cone search capability for table J/AJ/163/176/table1 (Prediction of microlensing events based on Gaia EDR3) https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/163/176/table1? https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/163/176/table1? http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/163/176/table1? 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44860 44872 44924 44967 44970 45006 45098 45107 45113-45114 45174 45213 45216 45235 45259 45281 45309 45311 45336 45375 45432 45492 45507 45555 45564 45570 45611 45650 45664 45685 45721 45731 45739-45740 45747 45754 45776 45782 45808 45820 45913 45932 45999 46003 46013 46091 46246 46256 46296 46421 46594 46631-46632 46658 46667 46690 46747 46773 46783 46803 46993-46994 47073 47117 47123-47124 47134 47142 47158 47163 47186 47206 47238 47243 47253 47258 47278-47279 47283 47303 47318 47332 47337 47342 47353 47372 47374-47375 47425 47464 47476 47536 47581 47588 47623 47640-47641 47654 47664 47672 47695 47726 47748 47750-47751 47754-47755 47760-47761 47764 47771 47776-47777 47779 47785 47790 47799-47800 47802 47804-47805 47813 47815 47822-47823 47852 47859 47866 47868 47871-47872 47907 47912 47918 47923 47948-47949 47953 47967 47980 47992 48007 48026 48031 48033-48034 48041-48042 48046-48047 48056 48067 48072 48085 48097 48100 48111 48118 48123 48125 48153 48167 48280 48303 48308 48316 48352 48424 48434 48501 48551 48572 48610 48641 48650 48652 48695 48699 48704 48724 48731 48775 48777 48796 48814-48815 48821 48846 48888 48954 48964 48999 49035 49044 49052 49058 1.9867573869263685e-19 3.916500758235022e-19 https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/163/176?format=ascii Optical default J/AJ/163/176/table1 Prediction of microlensing events based on Gaia EDR3 recno Record number assigned by the VizieR team. Should Not be used for identification. meta.record int Event Unique event identifier (1) meta.id;meta.main char Lens Gaia EDR3 lens identifier meta.id RAJ2016 [0/360] Gaia EDR3 lens Right Ascension (J2016.0) deg pos.eq.ra;meta.main DEJ2016 [-89/89] Gaia EDR3 lens Declination (J2016.0) deg pos.eq.dec;meta.main e_RAJ2016 [0.004/2] Uncertainty in RAdeg mas stat.error;pos.eq.ra float e_DEJ2016 [0.006/1] Uncertainty in DEdeg mas stat.error;pos.eq.dec float B_L2shift+ [0.01/885] Upper 67% confidence interval in L2shift+ mas stat.fit.param double b_L2shift+ [-10/-0.009] Lower 67% confidence interval in L2shift+ mas stat.fit.param double L2magnif [0/0.7] Maximal magnifications from L2 mag phot.flux;arith.ratio double B_L2magnif [0/1.2] Upper 67% confidence interval in L2magnif mag stat.fit.param float b_L2magnif [-0.48/0] Lower 67% confidence interval in L2magnif mag stat.fit.param float _RA.icrs Right ascension (ICRS) at Epoch=J2000, proper motions taken into account deg pos.eq.ra nullable indexed _DE.icrs Declination (ICRS) at Epoch=J2000, proper motions taken into account deg pos.eq.dec nullable indexed pmRA [-4407/6492] Gaia EDR3 lens proper motion in RA mas/yr pos.pm;pos.eq.ra double pmDE [-5818/10363] Gaia EDR3 lens proper motion in DE mas/yr pos.pm;pos.eq.dec double e_pmRA [0.005/2] Uncertainty in pmRA mas/yr stat.error;pos.pm;pos.eq.ra float e_pmDE [0.008/2] Uncertainty in pmDE mas/yr stat.error;pos.pm;pos.eq.dec float plx [0.76/769] Gaia EDR3 lens parallax mas pos.parallax.trig double e_plx [0.008/2] Uncertainty in plx mas stat.error;pos.parallax float Gmag [3.69/20.9] Gaia EDR3 lens mean G band mag mag phot.mag;em.opt.V double Rpmag [3.29/20.1]? Gaia EDR3 lens mean RP mag mag phot.mag;em.opt.R double nullable Bpmag [3.99/22.5]? Gaia EDR3 lens mean BP mag mag phot.mag;em.opt.B double nullable Obj Gaia EDR3 lensed object identifier meta.id ORAdeg [0/360] Gaia EDR3 lensed object Right Ascension (J2016.0) deg pos.eq.ra double ODEdeg [-89/89] Gaia EDR3 lensed object Declination (J2016.0) deg pos.eq.dec double e_ORAdeg [0.005/10] Uncertainty in ORAdeg mas stat.error float e_ODEdeg [0.007/9] Uncertainty in ODEdeg mas stat.error float OpmRA [-38.4/71.7]? Gaia EDR3 lensed object proper motion in RA mas/yr pos.pm;pos.eq.ra double nullable OpmDE [-102/40.5]? Gaia EDR3 lensed object proper motion in DE mas/yr pos.pm;pos.eq.dec double nullable e_OpmRA [0.008/4]? Uncertainty in OpmRA mas/yr stat.error float nullable e_OpmDE [0.009/4]? Uncertainty in OpmDE mas/yr stat.error float nullable Oplx [-6.1/9.1]? Gaia EDR3 lensed parallax mas pos.parallax.trig float nullable e_Oplx [0.008/3]? Uncertainty in Oplx mas stat.error float nullable OGmag [10.4/21.3] Gaia EDR3 lensed object mean G band magnitude mag phot.mag;em.opt.V float ORpmag [9.72/21.6]? Gaia EDR3 lensed object mean RP band magnitude mag phot.mag;em.opt.R float nullable OBpmag [11/23.3]? Gaia EDR3 lensed object mean BP band magnitude mag phot.mag;em.opt.B float nullable DisRA [-99.6/141]? Doubled displacement in RA between DR2 & EDR3 (2) mas pos.distance double nullable DisDE [-101/114]? Doubled displacement in DE between DR2 & EDR3 mas pos.distance double nullable Type Lensing star type (3) meta.note char Mass [0.07/1.63] Gaia EDR3 estimated lens mass solMass phys.mass float e_Mass [0.01/0.5] Uncertainty in Mass solMass stat.error;phys.mass float theta [1.1/39.2] Event Einstein radius mas phys.angSize;src float e_theta [0.1/5] Uncertainty in theta mas stat.error;pos.posAng float tAml [0.06/37.8]? Approx. duration of event (4) yr time.duration float nullable t01mas [0.002/92.9]? Approximate duration (5) yr time.duration double nullable t50pc [0.002/11.8] Approximate duration (6) yr time.duration double tca [2010/2070] Estim. time of closest approach yr time.epoch double e_tca [0.0001/5.2]? Uncertainty in tca yr stat.error float nullable dist [0/7041] Estim. distance closest approach mas pos.angDistance float e_dist [0.1/1300] Uncertainty in dist mas stat.error float u [0/253] Estimated distance at closest approach in units of Einstein radii pos.distance float B_u [0.12/360] Upper 67% confidence interval u stat.fit.param float b_u [-340/-0.12] Lower 67% confidence interval in u stat.fit.param float shift [0.04/9.71] Maximal astrometric shift of center of light mas stat.fit.param float B_shift [0.01/6.17] Upper 67% confidence interval in shift mas stat.fit.param float b_shift [-3.84/-0.009] Lower 67% confidence interval in shift mas stat.fit.param float shiftLum [6.37e-08/2.04] Max astrometric shift (7) mas stat.fit.param double B_shiftLum [7.5e-09/1.5] Upper 67% confidence interval in shiftLum mas stat.fit.param float b_shiftLum [-0.82/-6.6e-09] Lower 67% confidence interval in shiftLum mas stat.fit.param float shift+ [0.1/16.7] Maximal astrometric shift of brighter image mas stat.fit.param float B_shift+ [0.01/918] Upper 67% confidence interval in shift+ mas stat.fit.param double b_shift+ [-10/-0.009] Lower 67% confidence interval in shift+ mas stat.fit.param double Magnif [0/0.68] Maximal magnification mag phot.flux;arith.ratio double B_Magnif [-2e-31/1.2] Upper 67% confidence interval in Magnif mag stat.fit.param float b_Magnif [-0.46/0] Lower 67% confidence interval in Magnif mag stat.fit.param float L2tca [2010/2070] Estimated time of closest approach from L2 yr time.epoch double e_L2tca [3.9e-05/5.3] Uncertainty in L2tca yr stat.error float L2dist [0/7044] Estimated distance at closest approach from L2 mas pos.angDistance float e_L2dist [0.13/1300] Uncertainty in L2dist mas stat.error float L2u [0/253] Estimated distance at closest approach units of Einstein radii from L2 pos.distance float B_L2u [0.12/350] Upper 67% confidence interval in L2u stat.fit.param float b_L2u [-340/-0.11] Lower 67% confidence interval in L2u stat.fit.param float L2shift [0.04/9.68] Maximal astrometric shift of the center of light from L2 mas stat.fit.param float B_L2shift [0.01/6.49] Upper 67% confidence interval in L2shift mas stat.fit.param float b_L2shift [-3.83/-0.009] Lower 67% confidence interval in L2shift mas stat.fit.param float L2shiftLum [6.37e-08/2.04] Maximal astrometric shift including lens-luminosity effect from L2 mas stat.fit.param double B_L2shiftLum [7.5e-09/1.5] Upper 67% confidence interval in L2shiftLum mas stat.fit.param float b_L2shiftLum [-0.83/-6.6e-09] Lower 67% confidence interval in L2shiftLum mas stat.fit.param float L2shift+ [0.1/16.5] Maximal astrometric shift of brighter image from L2 mas stat.fit.param float