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| Verfasst von: | Satoh, Yuki K. [VerfasserIn]  |
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| | Koshimoto, Naoki [VerfasserIn] |
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| | Bennett, David P. [VerfasserIn] |
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| | Sumi, Takahiro [VerfasserIn] |
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| | Rattenbury, Nicholas James [VerfasserIn] |
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| | Suzuki, Daisuke [VerfasserIn] |
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| | Miyazaki, Shota [VerfasserIn] |
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| | Bond, Ian A. [VerfasserIn] |
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| | Udalski, Andrzej [VerfasserIn] |
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| | Gould, Andrew [VerfasserIn] |
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| | Bozza, Valerio [VerfasserIn] |
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| | Dominik, Martin [VerfasserIn] |
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| | Hirao, Yuki [VerfasserIn] |
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| | Kondo, Iona [VerfasserIn] |
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| | Kirikawa, Rintaro [VerfasserIn] |
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| | Hamada, Ryusei [VerfasserIn] |
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| | Hundertmark, Markus [VerfasserIn] |
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| Titel: | OGLE-2019-BLG-0825 |
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| Titelzusatz: | 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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| Verf.angabe: | Yuki K. Satoh, Naoki Koshimoto, David P. Bennett, Takahiro Sumi, Nicholas J. Rattenbury, Daisuke Suzuki, Shota Miyazaki, Ian A. Bond, Andrzej Udalski, Andrew Gould, Valerio Bozza, Martin Dominik, Yuki Hirao, Iona Kondo, Rintaro Kirikawa, Ryusei Hamada, (leading authors), Fumio Abe [und 21 weitere] (the MOA Collaboration), Przemek Mróz [und 12 weitere] (the OGLE Collaboration), Michael D. Albrow [und 20 weitere] (the KMTNet Collaboration), and Uffe G. Jørgensen, Markus Hundertmark [und 15 weitere] (the MiNDSTEp Collaboration) |
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| E-Jahr: | 2023 |
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| Jahr: | 2023 August 18 |
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| Umfang: | 15 S. |
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| Illustrationen: | Illustrationen |
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| Fussnoten: | Gesehen am 04.01.2024 ; The MOA Collaboration: Fumio Abe, Richard Barry, Aparna Bhattacharya [und 19 weitere Verfasser] ; The OGLE Collaboration: Przemek Mróz, Radosław Poleski , Jan Skowron [und 10 weitere Verfasser] ; The KMTNet Collaboration: Michael D. Albrow, Sun-Ju Chung, Cheongho Han [und 18 weitere Verfasser] ; The MiNDSTEp Collaboration: Uffe G. Jørgensen, Penélope Longa-Peña, Markus Hundertmark [und 14 weitere Verfasser] |
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| Titel Quelle: | Enthalten in: The astronomical journal |
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| Ort Quelle: | Washington, DC : AAS Publishing, American Astronomical Society, 1998 |
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| Jahr Quelle: | 2023 |
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| Band/Heft Quelle: | 166(2023), 3, Artikel-ID 116, Seite 1-15 |
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| ISSN Quelle: | 1538-3881 |
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| Abstract: | We 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 χ 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 ∼ 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. |
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| DOI: | doi:10.3847/1538-3881/ace908 |
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| URL: | Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.
kostenfrei: Volltext: https://doi.org/10.3847/1538-3881/ace908 |
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| | kostenfrei: Volltext: https://dx.doi.org/10.3847/1538-3881/ace908 |
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| | DOI: https://doi.org/10.3847/1538-3881/ace908 |
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| Datenträger: | Online-Ressource |
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| Sprache: | eng |
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| K10plus-PPN: | 1877265144 |
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| Verknüpfungen: | → Zeitschrift |
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OGLE-2019-BLG-0825 / Satoh, Yuki K. [VerfasserIn]; 2023 August 18 (Online-Ressource)
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