Afficher la notice abrégée

WFIRST Exoplanet Mass Measurement Method Finds a Planetary Mass of $39\pm 8 M_\oplus$ for OGLE-2012-BLG-0950Lb

dc.contributor.authorBHATTACHARYA, A.
hal.structure.identifierInstitut d'Astrophysique de Paris [IAP]
dc.contributor.authorBEAULIEU, J. P.
hal.structure.identifierUniversity of Notre Dame [Indiana] [UND]
dc.contributor.authorBENNETT, D. P.
hal.structure.identifierCentre Européen de Réalité Virtuelle [CERV]
dc.contributor.authorANDERSON, J.
dc.contributor.authorKOSHIMOTO, N.
dc.contributor.authorLU, J. R.
hal.structure.identifierInstitut d'Astrophysique de Paris [IAP]
dc.contributor.authorBATISTA, V.
hal.structure.identifierVanda Pharmaceuticals
dc.contributor.authorBLACKMAN, J. W.
hal.structure.identifierInstitute of Natural and Mathematical Sciences
dc.contributor.authorBOND, I. A.
hal.structure.identifierOkayama Astrophysical Observatory
dc.contributor.authorFUKUI, A.
dc.contributor.authorHENDERSON, C. B.
dc.contributor.authorHIRAO, Y.
hal.structure.identifierM2A 2018
dc.contributor.authorMARQUETTE, J.-B.
dc.contributor.authorMROZ, P.
dc.contributor.authorRANC, C.
dc.contributor.authorUDALSKI, A.
dc.date.issued2018
dc.identifier.issn0004-637X
dc.description.abstractEnWe present the analysis of the simultaneous high resolution images from the {\it Hubble Space Telescope} and Keck Adaptive Optics system of the planetary event OGLE-2012-BLG-0950 that determine that the system consists of a $0.58 \pm 0.04 \rm{M}_\odot$ host star orbited by a $39\pm 8 \rm{M}_\oplus$ planet of at projected separation of $2.54 \pm 0.23\,$AU. The planetary system is located at a distance of $2.19\pm 0.23$ kpc from Earth. This is the second microlens planet beyond the snow line with a mass measured to be in the mass range $20$--$80 \rm{M}_\oplus$. The runaway gas accretion process of the core accretion model predicts few planets in this mass range, because giant planets are thought to be growing rapidly at these masses and they rarely complete growth at this mass. So, this result suggests that the core accretion theory may need revision. This analysis also demonstrates the techniques that will be used to measure the masses of planets and their host stars by the WFIRST exoplanet microlensing survey: one-dimensional microlensing parallax combined with the separation and brightness measurement of the unresolved source and host stars to yield multiple redundant constraints on the masses and distance of the planetary system.
dc.language.isoen
dc.publisherAmerican Astronomical Society
dc.subject.enAstrophysics - Earth and Planetary Astrophysics
dc.title.enWFIRST Exoplanet Mass Measurement Method Finds a Planetary Mass of $39\pm 8 M_\oplus$ for OGLE-2012-BLG-0950Lb
dc.typeArticle de revue
dc.identifier.doi10.3847/1538-3881/aaed46
dc.subject.halPlanète et Univers [physics]/Astrophysique [astro-ph]/Instrumentation et méthodes pour l'astrophysique [astro-ph.IM]
dc.identifier.arxiv1809.02654
bordeaux.journalThe Astrophysical Journal
bordeaux.page289
bordeaux.volume156
bordeaux.issue6
bordeaux.peerReviewedoui
hal.identifierhal-01871779
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01871779v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=The%20Astrophysical%20Journal&rft.date=2018&rft.volume=156&rft.issue=6&rft.spage=289&rft.epage=289&rft.eissn=0004-637X&rft.issn=0004-637X&rft.au=BHATTACHARYA,%20A.&BEAULIEU,%20J.%20P.&BENNETT,%20D.%20P.&ANDERSON,%20J.&KOSHIMOTO,%20N.&rft.genre=article


Fichier(s) constituant ce document

FichiersTailleFormatVue

Il n'y a pas de fichiers associés à ce document.

Ce document figure dans la(les) collection(s) suivante(s)

Afficher la notice abrégée