OGLE-2019-BLG-0825: Constraints on the Source System and Effect on Binary-lens Parameters Arising from a Five-day Xallarap Effect in a Candidate Planetary Microlensing Event

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dc.contributor.authorSatoh, Yuki
dc.contributor.authorKoshimoto, Naoki
dc.contributor.authorBennett, David A.
dc.contributor.authorSumi, Takahiro
dc.contributor.authorRattenbury, Nicholas
dc.contributor.authorSuzuki, Daisuke
dc.contributor.authorMiyazaki, Shota
dc.contributor.authorBond, Ian
dc.contributor.authorUdalski, Andrzej
dc.contributor.authorGould, Andrew
dc.contributor.authorBozza, Valerio
dc.contributor.authorDominik, Martin
dc.contributor.authorHirao, Yuki
dc.contributor.authorKondo, Iona
dc.contributor.authorKirikawa, Rintaro
dc.contributor.authorHamada, Ryusei
dc.contributor.authorAbe, Fumio
dc.contributor.authorBarry, Richard
dc.contributor.authorBhattacharya, Aparna
dc.contributor.authorFujii, Hirosane
dc.contributor.authorFukui, Akihiko
dc.contributor.authorFujita, Katsuki
dc.contributor.authorIkeno, Tomoya
dc.contributor.authorIshitani Silva, Stela
dc.contributor.authorItow, Yoshitaka
dc.contributor.authorMatsubara, Yutaka
dc.contributor.authorMatsumoto, Sho
dc.contributor.authorMuraki, Yasushi
dc.contributor.authorNiwa, Kosuke
dc.contributor.authorOkamura, Arisa J.
dc.contributor.authorOlmschenk, Greg
dc.contributor.authorRanc, Clement
dc.contributor.authorToda, Taiga
dc.contributor.authorTomoyoshi, Mio
dc.contributor.authorTristram, Paul
dc.contributor.authorVandorou, Aikaterini
dc.contributor.authorYama, Hibiki
dc.contributor.authorYamashita, Kansuke
dc.contributor.authorMroz, Przemek
dc.contributor.authorPoleski, Radoslaw
dc.contributor.authorSkowron, Jan
dc.contributor.authorSzymanski, Michal K.
dc.contributor.authorPoleski, Radek A.
dc.contributor.authorSoszynski, Igor
dc.contributor.authorPietrukowicz, Pawel
dc.contributor.authorKozlowski, Szymon
dc.contributor.authorUlaczyk, Krzysztof D.
dc.contributor.authorRybicki, Krzysztof
dc.contributor.authorIwanek, Patryk
dc.contributor.authorWrona, Marcin
dc.contributor.authorGromadzki, Mariusz
dc.contributor.authorAlbrow, Michael
dc.contributor.authorChung, Sun-Ju
dc.contributor.authorHan, Cheongho
dc.contributor.authorHwang, Kyu-Ha
dc.contributor.authorKim, Doeon
dc.contributor.authorJung, Youn Kil
dc.contributor.authorKim, Hyoun Woo C.
dc.contributor.authorRyu, Yoon-Hyun
dc.contributor.authorShin, In-Gu
dc.contributor.authorShvartzvald, Yossi
dc.contributor.authorYang, Hongjing
dc.contributor.authorYee, Jennifer
dc.contributor.authorZang, Weicheng
dc.contributor.authorCha, Sang-Mok
dc.contributor.authorKim, Dong-Jin
dc.contributor.authorKim, Seung-Lee W.
dc.contributor.authorLee, Chung-Uk G.
dc.contributor.authorLee, Dong-Joo
dc.contributor.authorLee, Yongseok
dc.contributor.authorPark, Byeong-Gon
dc.contributor.authorPogge, Richard
dc.contributor.authorJorgensen, Uffe
dc.contributor.authorLonga-Pena, Penelope
dc.contributor.authorSajadian, Sedighe
dc.contributor.authorSkottfelt, Jesper
dc.contributor.authorSnodgrass, Colin
dc.contributor.authorTregloan-Reed, Jeremy
dc.contributor.authorBach-Moller, Nanna
dc.contributor.authorBurgdorf, Martin
dc.contributor.authorD'Ago, Giuseppe
dc.contributor.authorHaikala, Lauri
dc.contributor.authorHitchcock, James
dc.contributor.authorHundertmark, Markus
dc.contributor.authorKhalouei, Elahe
dc.contributor.authorPeixinho, Nuno
dc.contributor.authorRahvar, Sohrab
dc.contributor.authorSouthworth, John
dc.contributor.authorSpyratos, Petros
dc.date.accessioned2025-01-20T17:27:05Z
dc.date.available2025-01-20T17:27:05Z
dc.date.issued2023
dc.description.abstractWe present an analysis of microlensing event OGLE-2019-BLG-0825. This event was identified as a planetary candidate by preliminary modeling. We find that significant residuals from the best-fit static binary-lens model exist and a xallarap effect can fit the residuals very well and significantly improves chi (2) values. On the other hand, by including the xallarap effect in our models, we find that binary-lens parameters such as mass ratio, q, and separation, s, cannot be constrained well. However, we also find that the parameters for the source system such as the orbital period and semimajor axis are consistent between all the models we analyzed. We therefore constrain the properties of the source system better than the properties of the lens system. The source system comprises a G-type main-sequence star orbited by a brown dwarf with a period of P similar to 5 days. This analysis is the first to demonstrate that the xallarap effect does affect binary-lens parameters in planetary events. It would not be common for the presence or absence of the xallarap effect to affect lens parameters in events with long orbital periods of the source system or events with transits to caustics, but in other cases, such as this event, the xallarap effect can affect binary-lens parameters.
dc.fuente.origenWOS
dc.identifier.doi10.3847/1538-3881/ace908
dc.identifier.eissn1538-3881
dc.identifier.issn0004-6256
dc.identifier.urihttps://doi.org/10.3847/1538-3881/ace908
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/91563
dc.identifier.wosidWOS:001093278300001
dc.issue.numero3
dc.language.isoen
dc.revistaAstronomical journal
dc.rightsacceso restringido
dc.subject.ods13 Climate Action
dc.subject.odspa13 Acción por el clima
dc.titleOGLE-2019-BLG-0825: Constraints on the Source System and Effect on Binary-lens Parameters Arising from a Five-day Xallarap Effect in a Candidate Planetary Microlensing Event
dc.typeartículo
dc.volumen166
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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