Systematic KMTNet Planetary Anomaly Search. II. Six New q < 2 × 10−4 Mass-ratio Planets

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dc.citation.issue2
dc.citation.volume163
dc.contributor.authorHwang K-H
dc.contributor.authorZang W
dc.contributor.authorGould A
dc.contributor.authorUdalski A
dc.contributor.authorBond IA
dc.contributor.authorYang H
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 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
dc.contributor.authorMróz P
dc.contributor.authorPoleski R
dc.contributor.authorSkowron J
dc.contributor.authorSzymański MK
dc.contributor.authorSoszyński I
dc.contributor.authorPietrukowicz P
dc.contributor.authorKozłowski S
dc.contributor.authorUlaczyk K
dc.contributor.authorRybicki KA
dc.contributor.authorIwanek P
dc.contributor.authorWrona M
dc.contributor.authorGromadzki M
dc.contributor.authorAbe F
dc.contributor.authorBarry R
dc.contributor.authorBennett DP
dc.contributor.authorBhattacharya A
dc.contributor.authorFujii H
dc.contributor.authorFukui A
dc.contributor.authorHirao Y
dc.contributor.authorItow Y
dc.contributor.authorKirikawa R
dc.contributor.authorKondo I
dc.contributor.authorKoshimoto N
dc.contributor.authorMunford B
dc.contributor.authorMatsubara Y
dc.contributor.authorMiyazaki S
dc.contributor.authorMuraki Y
dc.contributor.authorOlmschenk G
dc.contributor.authorRanc C
dc.contributor.authorRattenbury NJ
dc.contributor.authorSatoh YK
dc.contributor.authorShoji H
dc.contributor.authorSilva SI
dc.contributor.authorSumi T
dc.contributor.authorSuzuki D
dc.contributor.authorTristram PJ
dc.contributor.authorYonehara A
dc.contributor.authorZhang X
dc.contributor.authorZhu W
dc.contributor.authorPenny MT
dc.contributor.authorFouqué P
dc.date.accessioned2023-11-08T19:48:51Z
dc.date.accessioned2023-11-20T01:37:57Z
dc.date.available2022-01-05
dc.date.available2023-11-08T19:48:51Z
dc.date.available2023-11-20T01:37:57Z
dc.date.issued2022-02-01
dc.description.abstractWe apply the automated AnomalyFinder algorithm of Paper I to 2018-2019 light curves from the ≃13 deg2 covered by the six KMTNet prime fields, with cadences Γ ≥ 2 hr-1. We find a total of 11 planets with mass ratios q < 2 × 10-4, including 6 newly discovered planets, 1 planet that was reported in Paper I, and recovery of 4 previously discovered planets. One of the new planets, OGLE-2018-BLG-0977Lb, is in a planetary caustic event, while the other five (OGLE-2018-BLG-0506Lb, OGLE-2018-BLG-0516Lb, OGLE-2019-BLG-1492Lb, KMT-2019-BLG-0253, and KMT-2019-BLG-0953) are revealed by a "dip"in the light curve as the source crosses the host-planet axis on the opposite side of the planet. These subtle signals were missed in previous by-eye searches. The planet-host separations (scaled to the Einstein radius), s, and planet-host mass ratios, q, are, respectively, (s, q × 105) = (0.88, 4.1), (0.96 ± 0.10, 8.3), (0.94 ± 0.07, 13), (0.97 ± 0.07, 18), (0.97 ± 0.04, 4.1), and (0.74, 18), where the "± "indicates a discrete degeneracy. The 11 planets are spread out over the range . Together with the two planets previously reported with q ∼ 10-5 from the 2018-2019 nonprime KMT fields, this result suggests that planets toward the bottom of this mass-ratio range may be more common than previously believed.
dc.description.confidentialfalse
dc.identifier.author-urlhttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000739048200001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=c5bb3b2499afac691c2e3c1a83ef6fef
dc.identifier.citationHwang KH, Zang W, Gould A, Udalski A, Bond IA, Yang H, Mao S, Albrow MD, Chung SJ, Han C, Kil Jung Y, Ryu YH, Shin IG, Shvartzvald Y, Yee JC, Cha SM, Kim DJ, Kim HW, Kim SL, Lee CU, Lee DJ, Lee Y, Park BG, Pogge RW, Mróz P, Poleski R, Skowron J, Szymański MK, Soszyński I, Pietrukowicz P, Kozłowski S, Ulaczyk K, Rybicki KA, Iwanek P, Wrona M, Gromadzki M, Abe F, Barry R, Bennett DP, Bhattacharya A, Fujii H, Fukui A, Hirao Y, Itow Y, Kirikawa R, Kondo I, Koshimoto N, Munford B, Matsubara Y, Miyazaki S, Muraki Y, Olmschenk G, Ranc C, Rattenbury NJ, Satoh YK, Shoji H, Ishitani Silva S, Sumi T, Suzuki D, Tristram PJ, Yonehara A, Zhang X, Zhu W, Penny MT, Fouqué P. (2022). Systematic KMTNet Planetary Anomaly Search. II. Six New q &lt; 2 × 10<sup>-4</sup>Mass-ratio Planets. Astronomical Journal. 163. 2.
dc.identifier.doi10.3847/1538-3881/ac38ad
dc.identifier.eissn1538-3881
dc.identifier.elements-typejournal-article
dc.identifier.issn0004-6256
dc.identifier.numberARTN 43
dc.identifier.urihttps://mro.massey.ac.nz/handle/10179/69140
dc.languageEnglish
dc.publisherIOP Publishing on behalf of the American Astronomical Society
dc.publisher.urihttps://iopscience.iop.org/article/10.3847/1538-3881/ac38ad
dc.relation.isPartOfAstronomical Journal
dc.rightsCC BY 4.0
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectGravitational microlensing exoplanet detection (2147)
dc.titleSystematic KMTNet Planetary Anomaly Search. II. Six New q < 2 × 10−4 Mass-ratio Planets
dc.typeJournal article
pubs.elements-id450990
pubs.organisational-groupOther
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