KMT-2016-BLG-1397b: KMTNET-only Discovery of a Microlens Giant Planet

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dc.contributor.authorZang W
dc.contributor.authorHwang K-H
dc.contributor.authorKim H-W
dc.contributor.authorGould A
dc.contributor.authorWang T
dc.contributor.authorZhu W
dc.contributor.authorMao S
dc.contributor.authorAlbrow MD
dc.contributor.authorChung S-J
dc.contributor.authorHan C
dc.contributor.authorJung YK
dc.contributor.authorRyu Y-H
dc.contributor.authorShin I-G
dc.contributor.authorShvartzvald Y
dc.contributor.authorYee JC
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.accessioned2019-02-04T22:19:10Z
dc.date.available2019-02-04T22:19:10Z
dc.date.issued2018en
dc.date.updated2019-01-28T22:40:20Z
dc.description.abstract© 2018. The American Astronomical Society. All rights reserved.. We report the discovery of a giant planet in the KMT-2016-BLG-1397 microlensing event, which was found by The Korea Microlensing Telescope Network alone. The timescale of this event is t E =40.0 ±0.5 days, and the mass ratio between the lens star and its companion is q =0.016 ±0.002. The planetary perturbation in the light curve is a smooth bump, resulting in the classical binary-lens/binary-source (2L1S/1L2S) degeneracy. We measure the V - I color of the (putative) two sources in the 1L2S model, and then effectively rule out the binary-source solution. The finite-source effect is marginally detected. Combined with the limits on the blend flux and the probability distribution of the source size normalized by the Einstein radius ρ, a Bayesian analysis yields the lens mass , at distance of kpc. Thus, the companion is a super-Jupiter of a mass , at a projected separation au, indicating that the planet is well beyond the snow line of the host star.en
dc.identifier.doihttps://doi.org/10.3847/1538-3881/aae537
dc.identifier.issn0004-6256
dc.identifier.issn1538-3881
dc.identifier.urihttp://hdl.handle.net/10092/16457
dc.language.isoen
dc.subjectgravitational lensing: microen
dc.subjectplanets and satellites: detectionen
dc.subjectstars: individual (KMT-2016-BLG-1397)en
dc.subject.anzsrcFields of Research::51 - Physical sciences::5101 - Astronomical sciences::510109 - Stellar astronomy and planetary systemsen
dc.subject.anzsrcField of Research::02 - Physical Sciences::0201 - Astronomical and Space Sciences::020108 - Planetary Science (excl. Extraterrestrial Geology)en
dc.titleKMT-2016-BLG-1397b: KMTNET-only Discovery of a Microlens Giant Planeten
dc.typeJournal Articleen
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