OGLE-2016-BLG-1190Lb: First Spitzer Bulge Planet Lies Near the Planet/Brown-Dwarf Boundary

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dc.contributor.authorRyu Y-H
dc.contributor.authorYee JC
dc.contributor.authorUdalski A
dc.contributor.authorBond IA
dc.contributor.authorShvartzvald Y
dc.contributor.authorZang W
dc.contributor.authorJaimes RF
dc.contributor.authorJorgensen UG
dc.contributor.authorZhu W
dc.contributor.authorHuang CX
dc.contributor.authorJung YK
dc.contributor.authorAlbrow MD
dc.contributor.authorChung S-J
dc.contributor.authorGould A
dc.contributor.authorHan C
dc.contributor.authorHwang K-H
dc.contributor.authorShin I-G
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 RW
dc.contributor.authorNovati SC
dc.contributor.authorCarey S
dc.contributor.authorHenderson CB
dc.contributor.authorBeichman C
dc.contributor.authorGaudi BS
dc.contributor.authorMróz P
dc.contributor.authorPoleski R
dc.contributor.authorSkowron J
dc.contributor.authorSzymanski MK
dc.contributor.authorSoszynski I
dc.contributor.authorKozlowski S
dc.contributor.authorPietrukowicz P
dc.contributor.authorUlaczyk K
dc.contributor.authorPawlak M
dc.contributor.authorAbe F
dc.contributor.authorAsakura Y
dc.contributor.authorBarry R
dc.contributor.authorBennett DP
dc.contributor.authorBhattacharya 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 MCA
dc.contributor.authorLing CH
dc.contributor.authorMasuda K
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 NJ
dc.contributor.authorSaito T
dc.contributor.authorSharan A
dc.contributor.authorSullivan DJ
dc.contributor.authorSumi T
dc.contributor.authorSuzuki D
dc.contributor.authorTristram PJ
dc.contributor.authorYamada T
dc.contributor.authorYamada T
dc.contributor.authorYonehara A
dc.contributor.authorBryden G
dc.contributor.authorHowell SB
dc.contributor.authorJacklin S
dc.contributor.authorPenny MT
dc.contributor.authorMao S
dc.contributor.authorFouque P
dc.contributor.authorWang T
dc.contributor.authorStreet RA
dc.contributor.authorTsapras Y
dc.contributor.authorHundertmark M
dc.contributor.authorBachelet E
dc.contributor.authorDominik M
dc.contributor.authorLi Z
dc.contributor.authorCross S
dc.contributor.authorCassan A
dc.contributor.authorHorne K
dc.contributor.authorSchmidt R
dc.contributor.authorWambsganss J
dc.contributor.authorMent SK
dc.contributor.authorMaoz D
dc.contributor.authorSnodgrass C
dc.contributor.authorSteele IA
dc.contributor.authorBozza V
dc.contributor.authorBurgdorf MJ
dc.contributor.authorCiceri S
dc.contributor.authorD'Ago G
dc.contributor.authorEvans DF
dc.contributor.authorHinse TC
dc.contributor.authorKerins E
dc.contributor.authorKokotanekova R
dc.contributor.authorLonga P
dc.contributor.authorMacKenzie J
dc.contributor.authorPopovas A
dc.contributor.authorRabus M
dc.contributor.authorRahvar S
dc.contributor.authorSejadian S
dc.contributor.authorSkottfelt J
dc.contributor.authorSouthworth J
dc.contributor.authorEssen CV
dc.date.accessioned2018-04-23T21:02:54Z
dc.date.available2018-04-23T21:02:54Z
dc.date.issued2017en
dc.date.updated2018-01-17T14:13:46Z
dc.description.abstractWe report the discovery of OGLE-2016-BLG-1190Lb, which is likely to be the first Spitzer microlensing planet in the Galactic bulge/bar, an assignation that can be confirmed by two epochs of high-resolution imaging of the combined source-lens baseline object. The planet's mass M_p= 13.4+-0.9 M_J places it right at the deuterium burning limit, i.e., the conventional boundary between "planets" and "brown dwarfs". Its existence raises the question of whether such objects are really "planets" (formed within the disks of their hosts) or "failed stars" (low mass objects formed by gas fragmentation). This question may ultimately be addressed by comparing disk and bulge/bar planets, which is a goal of the Spitzer microlens program. The host is a G dwarf M_host = 0.89+-0.07 M_sun and the planet has a semi-major axis a~2.0 AU. We use Kepler K2 Campaign 9 microlensing data to break the lens-mass degeneracy that generically impacts parallax solutions from Earth-Spitzer observations alone, which is the first successful application of this approach. The microlensing data, derived primarily from near-continuous, ultra-dense survey observations from OGLE, MOA, and three KMTNet telescopes, contain more orbital information than for any previous microlensing planet, but not quite enough to accurately specify the full orbit. However, these data do permit the first rigorous test of microlensing orbital-motion measurements, which are typically derived from data taken over <1% of an orbital period.en
dc.identifier.doihttps://doi.org/10.3847/1538-3881/aa9be4
dc.identifier.urihttp://hdl.handle.net/10092/15205
dc.language.isoen
dc.subjectastro-ph.EPen
dc.subjectgravitational lensing: microen
dc.subject.anzsrcField of Research::02 - Physical Sciences::0201 - Astronomical and Space Sciences::020102 - Astronomical and Space Instrumentationen
dc.subject.anzsrcFields of Research::51 - Physical sciences::5101 - Astronomical sciences::510109 - Stellar astronomy and planetary systemsen
dc.titleOGLE-2016-BLG-1190Lb: First Spitzer Bulge Planet Lies Near the Planet/Brown-Dwarf Boundaryen
dc.typeJournal Articleen
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