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OGLE-2013-BLG-0911Lb: A Secondary on the Brown-dwarf Planet Boundary around an M Dwarf

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cris.lastimport.scopus2024-02-12T19:34:21Z
dc.abstract.enWe present the analysis of the binary-lens microlensing event OGLE-2013-BLG-0911. The best-fit solutions indicate the binary mass ratio of q ≃ 0.03, which differs from that reported in Shvartzvald et al. The event suffers from the well-known close/wide degeneracy, resulting in two groups of solutions for the projected separation normalized by the Einstein radius of s ˜ 0.15 or s ˜ 7. The finite source and the parallax observations allow us to measure the lens physical parameters. The lens system is an M dwarf orbited by a massive Jupiter companion at very close ( ${M}_{\mathrm{host}}={0.30}_{-0.06}^{+0.08}{M}_{\odot }$ , ${M}_{\mathrm{comp}}={10.1}_{-2.2}^{+2.9}{M}_{\mathrm{Jup}}$ , ${a}_{\exp }={0.40}_{-0.04}^{+0.05}\,\mathrm{au}$ ) or wide ( ${M}_{\mathrm{host}}={0.28}_{-0.08}^{+0.10}{M}_{\odot }$ , ${M}_{\mathrm{comp}}={9.9}_{-3.5}^{+3.8}{M}_{\mathrm{Jup}}$ , ${a}_{\exp }={18.0}_{-3.2}^{+3.2}\,\mathrm{au}$ ) separation. Although the mass ratio is slightly above the planet-brown dwarf (BD) mass-ratio boundary of q = 0.03, which is generally used, the median physical mass of the companion is slightly below the planet-BD mass boundary of 13M<SUB>Jup</SUB>. It is likely that the formation mechanisms for BDs and planets are different and the objects near the boundaries could have been formed by either mechanism. It is important to probe the distribution of such companions with masses of ˜13M<SUB>Jup</SUB> in order to statistically constrain the formation theories for both BDs and massive planets. In particular, the microlensing method is able to probe the distribution around low-mass M dwarfs and even BDs, which is challenging for other exoplanet detection methods.
dc.affiliationUniwersytet Warszawski
dc.contributor.authorUdalski, Andrzej
dc.contributor.authorSkowron, Jan
dc.contributor.authorSzymański, Michał
dc.contributor.authorSoszyński, Igor
dc.contributor.authorPietrukowicz, Paweł
dc.contributor.authorKozłowski, Szymon
dc.contributor.authorWyrzykowski, Łukasz
dc.contributor.authorMiyazaki, Shota
dc.contributor.authorSumi, Takahiro
dc.contributor.authorBennett, David P.
dc.contributor.authorShvartzvald, Yossi
dc.contributor.authorStreet, Rachel
dc.contributor.authorBozza, Valerio
dc.contributor.authorYee, Jennifer C.
dc.contributor.authorBond, Ian A.
dc.contributor.authorRattenbury, Nicholas
dc.contributor.authorKoshimoto, Naoki
dc.contributor.authorSuzuki, Daisuke
dc.contributor.authorFukui, Akihiko
dc.contributor.authorAbe, F.
dc.contributor.authorBhattacharya, A.
dc.contributor.authorBarry, R.
dc.contributor.authorDonachie, M.
dc.contributor.authorFujii, H.
dc.contributor.authorHirao, Y.
dc.contributor.authorItow, Y.
dc.contributor.authorKamei, Y.
dc.contributor.authorKondo, I.
dc.contributor.authorLi, M. C. A.
dc.contributor.authorLing, C. H.
dc.contributor.authorMatsubara, Y.
dc.contributor.authorMatsuo, T.
dc.contributor.authorMuraki, Y.
dc.contributor.authorNagakane, M.
dc.contributor.authorOhnishi, K.
dc.contributor.authorRanc, C.
dc.contributor.authorSaito, T.
dc.contributor.authorSharan, A.
dc.contributor.authorShibai, H.
dc.contributor.authorSuematsu, H.
dc.contributor.authorSullivan, D. J.
dc.contributor.authorTristram, P. J.
dc.contributor.authorYamakawa, T.
dc.contributor.authorYonehara, A.
dc.contributor.authorPoleski, Radosław
dc.contributor.authorMróz, Przemysław
dc.contributor.authorUlaczyk, Krzysztof
dc.contributor.authorFriedmann, Matan
dc.contributor.authorKaspi, Shai
dc.contributor.authorMaoz, Dan
dc.contributor.authorAlbrow, M.
dc.contributor.authorChristie, G.
dc.contributor.authorDePoy, D. L.
dc.contributor.authorGal-Yam, A.
dc.contributor.authorGould, A.
dc.contributor.authorLee, C. -U.
dc.contributor.authorManulis, I.
dc.contributor.authorMcCormick, J.
dc.contributor.authorNatusch, T.
dc.contributor.authorNgan, H.
dc.contributor.authorPogge, R. W.
dc.contributor.authorPorritt, I.
dc.contributor.authorTsapras, Y.
dc.contributor.authorBachelet, E.
dc.contributor.authorHundertmark, M. P. G.
dc.contributor.authorDominik, M.
dc.contributor.authorBramich, D. M.
dc.contributor.authorCassan, A.
dc.contributor.authorJaimes, R. Figuera
dc.contributor.authorHorne, K.
dc.contributor.authorSchmidt, R.
dc.contributor.authorSnodgrass, C.
dc.contributor.authorWambsganss, J.
dc.contributor.authorSteele, I. A.
dc.contributor.authorMenzies, J.
dc.contributor.authorMao, S.
dc.contributor.authorJørgensen, U. G.
dc.contributor.authorBurgdorf, M. J.
dc.contributor.authorCiceri, S.
dc.contributor.authorNovati, S. Calchi
dc.contributor.authorD'Ago, G.
dc.contributor.authorEvans, D. F.
dc.contributor.authorHinse, T. C.
dc.contributor.authorKains, N.
dc.contributor.authorKerins, E.
dc.contributor.authorKorhonen, H.
dc.contributor.authorMancini, L.
dc.contributor.authorPopovas, A.
dc.contributor.authorRabus, M.
dc.contributor.authorRahvar, S.
dc.contributor.authorScarpetta, G.
dc.contributor.authorSkottfelt, J.
dc.contributor.authorSouthworth, J.
dc.contributor.authorPeixinho, N.
dc.contributor.authorVerma, P.
dc.date.accessioned2024-01-25T15:16:19Z
dc.date.available2024-01-25T15:16:19Z
dc.date.copyright2019-12-20
dc.date.issued2020
dc.description.accesstimeBEFORE_PUBLICATION
dc.description.financePublikacja bezkosztowa
dc.description.number2
dc.description.versionORIGINAL_AUTHOR
dc.description.volume159
dc.identifier.doi10.3847/1538-3881/AB64DE
dc.identifier.issn0004-6256
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/114481
dc.identifier.weblinkhttp://adsabs.harvard.edu/abs/2020AJ....159...76M
dc.languageeng
dc.pbn.affiliationastronomy
dc.relation.ispartofAstronomical Journal
dc.relation.pages76
dc.rightsOther
dc.sciencecloudnosend
dc.titleOGLE-2013-BLG-0911Lb: A Secondary on the Brown-dwarf Planet Boundary around an M Dwarf
dc.typeJournalArticle
dspace.entity.typePublication