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Spitzer Microlensing Parallax for OGLE-2016-BLG-1067: A Sub-Jupiter Orbiting an M Dwarf in the Disk

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dc.abstract.enWe report the discovery of a sub-Jupiter-mass planet orbiting beyond the snow line of an M dwarf most likely in the Galactic disk as part of the joint Spitzer and ground-based monitoring of planetary microlensing anomalies toward the Galactic bulge. Most of the microlensing parameters are strongly constrained by the light-curve modeling, and in particular there is a Spitzer-based measurement of the microlens parallax, π <SUB>E</SUB>. However, there are no caustic crossings, so the angular Einstein radius has only an upper limit based on the light-curve modeling alone. Additionally, the analysis leads us to identify eight degenerate configurations: the fourfold microlensing parallax degeneracy being doubled by a degeneracy in the caustic structure present at the level of the ground-based solutions. To calculate the physical parameters, and at the same time to break the parallax degeneracy, we make use of a series of arguments: the χ <SUP>2</SUP> hierarchy, the Rich argument (stating that the small-parallax solution is more likely), and a prior Galactic model. The preferred configuration, favored by a likelihood ratio of at least 4000, is for a host at {D}<SUB>L</SUB>={3.73}<SUB>-0.67</SUB><SUP>+0.66</SUP> {kpc} with mass {M}<SUB>{{L</SUB>}}={0.30}<SUB>-0.12</SUB><SUP>+0.15</SUP> {M}<SUB>⊙ </SUB>, orbited by a Saturn-like planet with {M}<SUB>planet</SUB>} ={0.43}<SUB>-0.17</SUB><SUP>+0.21</SUP> {M}<SUB>Jup</SUB>} at projected separation {a}<SUB>\perp </SUB>={1.70}<SUB>-0.39</SUB><SUP>+0.38</SUP> {au}, about 2.1 times beyond the system snow line. Therefore, it adds to the growing population of sub-Jupiter planets orbiting beyond the snow line of M dwarfs discovered by microlensing. Based on the rules of the real-time protocol for the selection of events to be followed up with Spitzer, this planet will not enter the sample for measuring the Galactic distribution of planets.
dc.affiliationUniwersytet Warszawski
dc.contributor.authorUdalski, Andrzej
dc.contributor.authorSkowron, Jan
dc.contributor.authorSzymański, Michał
dc.contributor.authorSoszyński, Igor
dc.contributor.authorKozłowski, Szymon
dc.contributor.authorPietrukowicz, Paweł
dc.contributor.authorNovati, S. Calchi
dc.contributor.authorSuzuki, D.
dc.contributor.authorGould, A.
dc.contributor.authorShvartzvald, Y.
dc.contributor.authorBozza, V.
dc.contributor.authorBennett, D. P.
dc.contributor.authorBeichman, C.
dc.contributor.authorBryden, G.
dc.contributor.authorCarey, S.
dc.contributor.authorGaudi, B. S.
dc.contributor.authorHenderson, C. B.
dc.contributor.authorYee, J. C.
dc.contributor.authorZhu, W.
dc.contributor.authorAbe, F.
dc.contributor.authorAsakura, Y.
dc.contributor.authorBarry, R.
dc.contributor.authorBhattacharya, A.
dc.contributor.authorBond, I. A.
dc.contributor.authorDonachie, M.
dc.contributor.authorEvans, P.
dc.contributor.authorFukui, A.
dc.contributor.authorHirao, Y.
dc.contributor.authorItow, Y.
dc.contributor.authorKawasaki, K.
dc.contributor.authorKoshimoto, N.
dc.contributor.authorLi, M. C. A.
dc.contributor.authorLing, C. H.
dc.contributor.authorMatsubara, Y.
dc.contributor.authorMiyazaki, S.
dc.contributor.authorMuraki, Y.
dc.contributor.authorNagakane, M.
dc.contributor.authorOhnishi, K.
dc.contributor.authorRanc, C.
dc.contributor.authorRattenbury, N. J.
dc.contributor.authorSaito, To.
dc.contributor.authorSharan, A.
dc.contributor.authorSullivan, D. J.
dc.contributor.authorSumi, T.
dc.contributor.authorTristram, P. J.
dc.contributor.authorYamada, T.
dc.contributor.authorYonehara, A.
dc.contributor.authorMróz, Przemysław
dc.contributor.authorPoleski, Radosław
dc.contributor.authorUlaczyk, Krzysztof
dc.contributor.authorPawlak, Michał
dc.contributor.authorAlbrow, M. D.
dc.contributor.authorChung, S. -J.
dc.contributor.authorHan, C.
dc.contributor.authorHwang, K. -H.
dc.contributor.authorJung, Y. K.
dc.contributor.authorRyu, Y. -H.
dc.contributor.authorShin, I. -G.
dc.contributor.authorZang, W.
dc.contributor.authorCha, S. -M.
dc.contributor.authorKim, D. -J.
dc.contributor.authorKim, H. -W.
dc.contributor.authorKim, S. -L.
dc.contributor.authorLee, C. -U.
dc.contributor.authorLee, D. -J.
dc.contributor.authorLee, Y.
dc.contributor.authorPark, B. -G.
dc.contributor.authorPogge, R. W.
dc.date.accessioned2024-01-26T07:57:18Z
dc.date.available2024-01-26T07:57:18Z
dc.date.copyright2018-01-17
dc.date.issued2019
dc.description.accesstimeBEFORE_PUBLICATION
dc.description.financeNie dotyczy
dc.description.number3
dc.description.versionORIGINAL_AUTHOR
dc.description.volume157
dc.identifier.doi10.3847/1538-3881/AB0106
dc.identifier.issn0004-6256
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/120399
dc.identifier.weblinkhttp://adsabs.harvard.edu/abs/2019AJ....157..121C
dc.languageeng
dc.pbn.affiliationastronomy
dc.relation.ispartofAstronomical Journal
dc.relation.pages121
dc.rightsOther
dc.sciencecloudnosend
dc.titleSpitzer Microlensing Parallax for OGLE-2016-BLG-1067: A Sub-Jupiter Orbiting an M Dwarf in the Disk
dc.typeJournalArticle
dspace.entity.typePublication