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Systematic KMTNet Planetary Anomaly Search. VI. Complete Sample of 2018 Sub-prime-field Planets

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cris.lastimport.scopus2024-02-12T20:48:57Z
dc.abstract.enWe complete the analysis of all 2018 sub-prime-field microlensing planets identified by the KMTNet AnomalyFinder. Among the 9 previously unpublished events with clear planetary solutions, 6 are clearly planetary (OGLE-2018-BLG-0298, KMT-2018-BLG-0087, KMT-2018-BLG-0247, KMT-2018-BLG-0030, OGLE-2018-BLG-1119, and KMT-2018-BLG-2602), while the remaining 3 are ambiguous in nature. The above ordering of these events is made to facilitate grouping of their Bayesian estimates: the first two are lower-mass gas giants while the last four are Jovian-class planets; the first three most likely lie in the bulge, the last in the disk, and the remaining two are equally likely to be in either population. More specifically, these six planets have host masses ${M}_{mathrm{host}}=({0.69}_{-0.30}^{+0.34},{0.10}_{-0.05}^{+0.14},{0.29}_{-0.14}^{+0.28},{0.51}_{-0.31}^{+0.43},{0.48}_{-0.28}^{+0.35},{0.66}_{-0.36}^{+0.42}){M}_{odot }$ , planet masses ${M}_{mathrm{planet}}=({0.14}_{-0.06}^{+0.07},{0.23}_{-0.12}^{+0.32},{2.11}_{-1.04}^{+2.09},{1.45}_{-0.88}^{+1.23},{0.91}_{-0.52}^{+0.66},{1.15}_{-0.63}^{+0.73}){M}_{mathrm{Jup}}$ , and distances ${D}_{L}=({6.54}_{-1.23}^{+0.95},{7.02}_{-1.15}^{+1.03},{6.76}_{-1.24}^{+0.99},{6.48}_{-1.96}^{+1.28},{5.76}_{-2.48}^{+1.43},{4.31}_{-1.84}^{+1.97})mathrm{kpc}$ . In addition, there are 8 previously published sub-prime-field planets that were selected by the AnomalyFinder algorithm. Together with a companion paper on 2018 prime-field planets, this work lays the basis for comprehensive statistical studies. We carry out two such studies, one on caustic topologies and the other on the role of Gaia data. From the first, as expected, half (17/33) of the 2018 planets likely to enter the mass-ratio analysis have non-caustic-crossing anomalies. However, only 1 of the 5 noncaustic anomalies with planet-host mass ratio q < 10<SUP>-3</SUP> was discovered by eye (compared to 7 of the 12 with q > 10<SUP>-3</SUP>), showing the importance of the semiautomated AnomalyFinder search. From the second, we find that Gaia has played a major role in the interpretation of 16% of the sample and a supplementary role in 6%.
dc.affiliationUniwersytet Warszawski
dc.contributor.authorUlaczyk, Krzysztof
dc.contributor.authorKozłowski, Szymon
dc.contributor.authorPietrukowicz, Paweł
dc.contributor.authorSoszyński, Igor
dc.contributor.authorPoleski, Radosław
dc.contributor.authorSkowron, Jan
dc.contributor.authorSzymański, Michał
dc.contributor.authorMróz, Przemysław
dc.contributor.authorUdalski, Andrzej
dc.contributor.authorJung, Youn Kil
dc.contributor.authorZang, Weicheng
dc.contributor.authorHan, Cheongho
dc.contributor.authorGould, Andrew
dc.contributor.authorAlbrow, Michael D.
dc.contributor.authorChung, Sun-Ju
dc.contributor.authorHwang, Kyu-Ha
dc.contributor.authorRyu, Yoon-Hyun
dc.contributor.authorShin, In-Gu
dc.contributor.authorShvartzvald, Yossi
dc.contributor.authorYang, Hongjing
dc.contributor.authorYee, Jennifer C.
dc.contributor.authorCha, Sang-Mok
dc.contributor.authorKim, Dong-Jin
dc.contributor.authorKim, Seung-Lee
dc.contributor.authorLee, Chung-Uk
dc.contributor.authorLee, Dong-Joo
dc.contributor.authorLee, Yongseok
dc.contributor.authorPark, Byeong-Gon
dc.contributor.authorPogge, Richard W.
dc.contributor.authorRybicki, Krzysztof
dc.contributor.authorIwanek, Patryk
dc.contributor.authorWrona, Marcin
dc.date.accessioned2024-01-26T09:27:54Z
dc.date.available2024-01-26T09:27:54Z
dc.date.copyright2022-11-30
dc.date.issued2022
dc.description.accesstimeAT_PUBLICATION
dc.description.financePublikacja bezkosztowa
dc.description.number6
dc.description.versionFINAL_PUBLISHED
dc.description.volume164
dc.identifier.doi10.3847/1538-3881/AC9C5C
dc.identifier.issn0004-6256
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/121351
dc.identifier.weblinkhttp://adsabs.harvard.edu/abs/2022AJ....164..262J
dc.languageeng
dc.pbn.affiliationastronomy
dc.relation.ispartofAstronomical Journal
dc.relation.pages262
dc.rightsCC-BY
dc.sciencecloudnosend
dc.titleSystematic KMTNet Planetary Anomaly Search. VI. Complete Sample of 2018 Sub-prime-field Planets
dc.typeJournalArticle
dspace.entity.typePublication