LCs of OGLE-2018-BLG-0567 and OGLE-2018-BLG-0962

DOI

We present the analyses of two microlensing events, OGLE-2018-BLG-0567 and OGLE-2018-BLG-0962. In both events, the short-lasting anomalies were densely and continuously covered by two high-cadence surveys. The light-curve modeling indicates that the anomalies are generated by source crossings over the planetary caustics induced by planetary companions to the hosts. The estimated planet/host separation (scaled to the angular Einstein radius {theta}E) and mass ratio are (s, qx10^3^)=(1.81{+/-}0.02, 1.24{+/-}0.07) and (s, qx10^3^)=(1.25{+/-}0.03, 2.38{+/-}0.08), respectively. From Bayesian analyses, we estimate the host and planet masses as (M_h_, M_p_)=(0.25_-0.13_^+0.27^, M{odot}, 0.32_-0.17_^+0.34^, M_J_) and (M_h_, M_p_=(0.54_-0.28_^+0.33^, M{odot}, 1.34_-0.70_^+0.82^, M_J_), respectively. These planetary systems are located at a distance of 7.06_-1.15_^+0.93^kpc for OGLE-2018-BLG-0567 and 6.50_-1.75_^+1.06^kpc for OGLE-2018-BLG-0962, suggesting that they are likely to be near the Galactic bulge. The two events prove the capability of current high-cadence surveys for finding planets through the planetary-caustic channel. We find that most published planetary-caustic planets are found in Hollywood events in which the source size strongly contributes to the anomaly cross-section relative to the size of the caustic.

Identifier
DOI http://doi.org/10.26093/cds/vizier.51610293
Source https://dc.g-vo.org/rr/q/lp/custom/CDS.VizieR/J/AJ/161/293
Related Identifier https://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/161/293
Related Identifier https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/161/293
Metadata Access http://dc.g-vo.org/rr/q/pmh/pubreg.xml?verb=GetRecord&metadataPrefix=oai_b2find&identifier=ivo://CDS.VizieR/J/AJ/161/293
Provenance
Creator Jung Y.; Han C.; Udalski A.; Gould A.; Yee J.C.; Albrow M.D.,Chung S.-J.; Hwang K.-H.; Ryu Y.-H.; Shin I.-G.; Shvartzvald Y.; Zhu W.,Zang W.; Cha S.-M.; Kim D.-J.; Kim H.-W.; Kim S.-L.; Lee C.-U.; Lee D.-J.,Lee Y.; Park B.-G.; Pogge R.W.; Mroz P.; Szymanski M.K.; Skowron J.,Poleski R.; Soszynski I.; Pietrukowicz P.; Kozlowski S.; Ulaczyk K.,Rybicki K.A.; Iwanek P.; Wrona M.
Publisher CDS
Publication Year 2021
Rights https://cds.unistra.fr/vizier-org/licences_vizier.html
OpenAccess true
Contact CDS support team <cds-question(at)unistra.fr>
Representation
Resource Type Dataset; AstroObjects
Discipline Astrophysical Processes; Astrophysics and Astronomy; Exoplanet Astronomy; Natural Sciences; Observational Astronomy; Physics