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A Gas Giant Planet in the OGLE-2006-BLG-284L Stellar Binary System

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cris.lastimport.scopus2024-02-12T19:35:45Z
dc.abstract.enWe present the analysis of microlensing event OGLE-2006-BLG-284, which has a lens system that consists of two stars and a gas giant planet with a mass ratio of q<SUB>p</SUB> = (1.26 ± 0.19) × 10<SUP>-3</SUP> to the primary. The mass ratio of the two stars is q<SUB>s</SUB> = 0.289 ± 0.011, and their projected separation is s<SUB>s</SUB> = 2.1 ± 0.7 au, while the projected separation of the planet from the primary is s<SUB>p</SUB> = 2.2 ± 0.8 au. For this lens system to have stable orbits, the three-dimensional separation of either the primary and secondary stars or the planet and primary star must be much larger than the projected separations. Since we do not know which is the case, the system could include either a circumbinary or a circumstellar planet. Because there is no measurement of the microlensing parallax effect or lens system brightness, we can only make a rough Bayesian estimate of the lens system masses and brightness. We find host star and planet masses of ${M}_{L1}={0.35}_{-0.20}^{+0.30}\,{M}_{\odot }$ , ${M}_{L2}={0.10}_{-0.06}^{+0.09}\,{M}_{\odot }$ , and ${m}_{p}={144}_{-82}^{+126}\,{M}_{\oplus }$ , and the K-band magnitude of the combined brightness of the host stars is ${K}_{L}={19.7}_{-1.0}^{+0.7}$ . The separation between the lens and source system will be ˜90 mas in mid-2020, so it should be possible to detect the host system with follow-up adaptive optics or Hubble Space Telescope observations.
dc.affiliationUniwersytet Warszawski
dc.contributor.authorBennett, David P.
dc.contributor.authorUdalski, Andrzej
dc.contributor.authorBond, Ian A.
dc.contributor.authorAbe, Fumio
dc.contributor.authorBarry, Richard K.
dc.contributor.authorBhattacharya, Aparna
dc.contributor.authorDonachie, Martin
dc.contributor.authorFujii, Hirosane
dc.contributor.authorFukui, Akihiko
dc.contributor.authorHirao, Yuki
dc.contributor.authorItow, Yoshitaka
dc.contributor.authorKawasaki, Kohei
dc.contributor.authorKirikawa, Rintaro
dc.contributor.authorKondo, Iona
dc.contributor.authorKoshimoto, Naoki
dc.contributor.authorCheung, Alex Li Man
dc.contributor.authorMatsubara, Yutaka
dc.contributor.authorMiyazaki, Shota
dc.contributor.authorMuraki, Yasushi
dc.contributor.authorRanc, Clément
dc.contributor.authorRattenbury, Nicholas J.
dc.contributor.authorSatoh, Yuki
dc.contributor.authorShoji, Hikaru
dc.contributor.authorSumi, Takahiro
dc.contributor.authorSuzuki, Daisuke
dc.contributor.authorTanaka, Yuzuru
dc.contributor.authorTristram, Paul J.
dc.contributor.authorYamawaki, Tsubasa
dc.contributor.authorYonehara, Atsunori
dc.contributor.authorMróz, Przemysław
dc.contributor.authorPoleski, Radosław
dc.contributor.authorSzymański, Michał
dc.contributor.authorSoszyński, Igor
dc.contributor.authorWyrzykowski, Łukasz
dc.contributor.authorUlaczyk, Krzysztof
dc.date.accessioned2024-01-24T17:37:45Z
dc.date.available2024-01-24T17:37:45Z
dc.date.copyright2020-05-20
dc.date.issued2020
dc.description.accesstimeBEFORE_PUBLICATION
dc.description.financePublikacja bezkosztowa
dc.description.number2
dc.description.versionORIGINAL_AUTHOR
dc.description.volume160
dc.identifier.doi10.3847/1538-3881/AB9CB9
dc.identifier.issn0004-6256
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/101561
dc.identifier.weblinkhttp://adsabs.harvard.edu/abs/2020AJ....160...72B
dc.languageeng
dc.pbn.affiliationastronomy
dc.relation.ispartofAstronomical Journal
dc.relation.pages72
dc.rightsOther
dc.sciencecloudnosend
dc.titleA Gas Giant Planet in the OGLE-2006-BLG-284L Stellar Binary System
dc.typeJournalArticle
dspace.entity.typePublication