KMT-2016-BLG-1107: A New Hollywood-Planet Close/Wide Degeneracy

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dc.contributor.authorHwang K-H
dc.contributor.authorRyu Y-H
dc.contributor.authorKim H-W
dc.contributor.authorAlbrow MD
dc.contributor.authorChung S-J
dc.contributor.authorGould A
dc.contributor.authorHan C
dc.contributor.authorJung YK
dc.contributor.authorShin I-G
dc.contributor.authorShvartzvald Y
dc.contributor.authorYee JC
dc.contributor.authorZang W
dc.contributor.authorCha S-M
dc.contributor.authorKim D-J
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.date.accessioned2018-08-09T03:33:33Z
dc.date.available2018-08-09T03:33:33Z
dc.date.issued2018en
dc.date.updated2018-06-12T21:55:42Z
dc.description.abstractWe show that KMT-2016-BLG-1107 displays a new type of degeneracy between wide-binary and close-binary Hollywood events in which a giant-star source envelops the planetary caustic. The planetary anomaly takes the form of a smooth, two-day "bump" far out on the falling wing of the light curve, which can be interpreted either as the source completely enveloping a minor-image caustic due to a close companion with mass ratio $q=0.036$, or partially enveloping a major-image caustic due to a wide companion with $q=0.004$. The best estimates of the companion masses are both in the planetary regime ($3.3^{+3.5}_{-1.8}\,M_{\rm jup}$ and $0.090^{+0.096}_{-0.037}\,M_{\rm jup}$) but differ by an even larger factor than the mass ratios due to different inferred host masses. We show that the two solutions can be distinguished by high-resolution imaging at first light on next-generation ("30m") telescopes. We provide analytic guidance to understand the conditions under which this new type of degeneracy can appear.en
dc.identifier.urihttp://hdl.handle.net/10092/15768
dc.language.isoen
dc.subjectastro-ph.EPen
dc.subjectgravitational lensing: microen
dc.subject.anzsrcFields of Research::51 - Physical sciences::5101 - Astronomical sciences::510109 - Stellar astronomy and planetary systemsen
dc.titleKMT-2016-BLG-1107: A New Hollywood-Planet Close/Wide Degeneracyen
dc.typeJournal Articleen
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