OGLE-2018-BLG-0971, MOA-2023-BLG-065, and OGLE-2023-BLG-0136: Microlensing events with prominent orbital effects

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dc.citation.volume686
dc.contributor.authorHan C
dc.contributor.authorUdalski A
dc.contributor.authorBond IA
dc.contributor.authorLee C-U
dc.contributor.authorGould A
dc.contributor.authorAlbrow MD
dc.contributor.authorChung S-J
dc.contributor.authorHwang K-H
dc.contributor.authorJung YK
dc.contributor.authorKim H-W
dc.contributor.authorRyu Y-H
dc.contributor.authorShvartzvald Y
dc.contributor.authorShin I-G
dc.contributor.authorYee JC
dc.contributor.authorYang H
dc.contributor.authorZang W
dc.contributor.authorCha S-M
dc.contributor.authorKim D
dc.contributor.authorKim D-J
dc.contributor.authorKim S-L
dc.contributor.authorLee D-J
dc.contributor.authorLee Y
dc.contributor.authorPark B-G
dc.contributor.authorPogge RW
dc.contributor.authorMróz P
dc.contributor.authorSzymański MK
dc.contributor.authorSkowron J
dc.contributor.authorPoleski R
dc.contributor.authorSoszyński I
dc.contributor.authorPietrukowicz P
dc.contributor.authorKozłowski S
dc.contributor.authorRybicki KA
dc.contributor.authorIwanek P
dc.contributor.authorUlaczyk K
dc.contributor.authorWrona M
dc.contributor.authorGromadzki M
dc.contributor.authorMróz MJ
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.authorHamada R
dc.contributor.authorHirao Y
dc.contributor.authorSilva SI
dc.contributor.authorItow Y
dc.contributor.authorKirikawa R
dc.contributor.authorKoshimoto N
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 Y
dc.contributor.authorSumi T
dc.contributor.authorSuzuki D
dc.contributor.authorTomoyoshi M
dc.contributor.authorTristram PJ
dc.contributor.authorVandorou A
dc.contributor.authorYama H
dc.contributor.authorYamashita K
dc.date.accessioned2024-09-09T03:15:41Z
dc.date.available2024-09-09T03:15:41Z
dc.date.issued2024-06-14
dc.description.abstractAims. We undertake a project to reexamine microlensing data gathered from high-cadence surveys. The aim of the project is to reinvestigate lensing events whose light curves exhibit intricate anomaly features that are associated with caustics, but lack prior proposed models that would explain these features. Methods. Through detailed reanalyses considering higher-order effects, we determined that it is vital to account for the orbital motions of lenses to accurately explain the anomaly features observed in the light curves of the lensing events OGLE-2018-BLG-0971, MOA-2023-BLG-065, and OGLE-2023-BLG-0136. Results. We estimated the masses and distances to the lenses by conducting Bayesian analyses using the lensing parameters of the newly found lensing solutions. These analyses showed that the lenses of the events OGLE-2018-BLG-0971 and MOA-2023-BLG-065 are binaries composed of M dwarfs, while the lens of OGLE-2023-BLG-0136 likely is a binary composed of an early K-dwarf primary and a late M-dwarf companion. For all lensing events, the probability that the lens resides in the bulge is considerably higher than that it is located in the disk.
dc.description.confidentialfalse
dc.edition.editionJune 2024
dc.identifier.citationHan C, Udalski A, Bond IA, Lee CU, Gould A, Albrow MD, Chung SJ, Hwang KH, Jung YK, Kim HW, Ryu YH, Shvartzvald Y, Shin IG, Yee JC, Yang H, Zang W, Cha SM, Kim D, Kim DJ, Kim SL, Lee DJ, Lee Y, Park BG, Pogge RW, Mróz P, Szymański MK, Skowron J, Poleski R, Soszyński I, Pietrukowicz P, Kozłowski S, Rybicki KA, Iwanek P, Ulaczyk K, Wrona M, Gromadzki M, Mróz MJ, Abe F, Barry R, Bennett DP, Bhattacharya A, Fujii H, Fukui A, Hamada R, Hirao Y, Silva SI, Itow Y, Kirikawa R, Koshimoto N, Matsubara Y, Miyazaki S, Muraki Y, Olmschenk G, Ranc C, Rattenbury NJ, Satoh Y, Sumi T, Suzuki D, Tomoyoshi M, Tristram PJ, Vandorou A, Yama H, Yamashita K. (2024). OGLE-2018-BLG-0971, MOA-2023-BLG-065, and OGLE-2023-BLG-0136: Microlensing events with prominent orbital effects. Astronomy and Astrophysics. 686.
dc.identifier.doi10.1051/0004-6361/202349063
dc.identifier.eissn1432-0746
dc.identifier.elements-typejournal-article
dc.identifier.issn0004-6361
dc.identifier.numberA234
dc.identifier.urihttps://mro.massey.ac.nz/handle/10179/71438
dc.languageEnglish
dc.publisherEDP Sciences
dc.publisher.urihttps://www.aanda.org/articles/aa/full_html/2024/06/aa49063-23/aa49063-23.html
dc.relation.isPartOfAstronomy and Astrophysics
dc.rights(c) 2024 The Author/s
dc.rightsCC BY 4.0
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectgravitational lensing: micro
dc.titleOGLE-2018-BLG-0971, MOA-2023-BLG-065, and OGLE-2023-BLG-0136: Microlensing events with prominent orbital effects
dc.typeJournal article
pubs.elements-id489395
pubs.organisational-groupOther
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