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Precise Mass Measurement of OGLE-2013-BLG-0132/MOA-2013-BLG-148: A Saturn-mass Planet Orbiting an M Dwarf

hal.structure.identifierInstitut d'Astrophysique de Paris [IAP]
dc.contributor.authorREKTSINI, Natalia
hal.structure.identifierInstitut d'Astrophysique de Paris [IAP]
dc.contributor.authorBATISTA, Virginie
hal.structure.identifierInstitut d'Astrophysique de Paris [IAP]
dc.contributor.authorRANC, Clément
dc.contributor.authorBENNETT, David
hal.structure.identifierInstitut d'Astrophysique de Paris [IAP]
dc.contributor.authorBEAULIEU, Jean-Philippe
dc.contributor.authorBLACKMAN, Joshua
dc.contributor.authorCOLE, Andrew
dc.contributor.authorTERRY, Sean
dc.contributor.authorKOSHIMOTO, Naoki
dc.contributor.authorBHATTACHARYA, Aparna
dc.contributor.authorVANDOROU, Aikaterini
dc.contributor.authorPLUNKETT, Thomas
hal.structure.identifierLaboratoire d'Astrophysique de Bordeaux [Pessac] [LAB]
dc.contributor.authorMARQUETTE, Jean-Baptiste
dc.date.accessioned2024-11-20T03:24:42Z
dc.date.available2024-11-20T03:24:42Z
dc.date.issued2024-03-07
dc.identifier.issn0004-6256
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/203364
dc.description.abstractEnAbstract We revisit the planetary microlensing event OGLE-2013-BLG-0132/MOA-2013-BLG-148 using Keck adaptive optics imaging in 2013 with NIRC2 and in 2020, 7.4 yr after the event, with OSIRIS. The 2020 observations yield a source and lens separation of 56.91 ± 0.29 mas, which provides us with a precise measurement of the heliocentric proper motion of the event μ rel,hel = 7.695 ± 0.039 mas yr −1 . We measured the magnitude of the lens in the K band as K lens = 18.69 ± 0.04. Using these constraints, we refit the microlensing light curve and undertake a full reanalysis of the event parameters including the microlensing parallax π E and the distance to the source D S . We confirm the results obtained in the initial study by Mróz et al. and improve significantly upon the accuracy of the physical parameters. The system is an M dwarf of 0.495 ± 0.054 M ⊙ orbited by a cold, Saturn-mass planet of 0.26 ± 0.028 M Jup at projected separation r ⊥ = 3.14 ± 0.28 au. This work confirms that the planetary system is at a distance of 3.48 ± 0.36 kpc, which places it in the Galactic disk and not the Galactic bulge.
dc.language.isoen
dc.publisherAmerican Astronomical Society
dc.title.enPrecise Mass Measurement of OGLE-2013-BLG-0132/MOA-2013-BLG-148: A Saturn-mass Planet Orbiting an M Dwarf
dc.typeArticle de revue
dc.identifier.doi10.3847/1538-3881/ad2514
dc.subject.halPlanète et Univers [physics]
dc.identifier.arxiv2401.17549
bordeaux.journalThe Astronomical Journal
bordeaux.page145
bordeaux.volume167
bordeaux.hal.laboratoriesLaboratoire d'Astrophysique de Bordeaux (LAB) - UMR 5804*
bordeaux.issue4
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionCNRS
bordeaux.peerReviewedoui
hal.identifierhal-04789839
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-04789839v1
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