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OGLE-2018-BLG-1011Lb,c: Microlensing Planetary System with Two Giant Planets Orbiting a Low-mass Star

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Název: OGLE-2018-BLG-1011Lb,c: Microlensing Planetary System with Two Giant Planets Orbiting a Low-mass Star
Autoři: Han, C., Bennett, D., Udalski, A., Gould, A., Bond, I., Shvartzvald, Y., Nikolaus, K., Hundertmark, M., Bozza, V., Cassan, A., Hirao, Y., Bachelet, E., Fouqué, P., Authors, L., Albrow, M., Chung, S., Hong, K., Hwang, K., Lee, C., Ryu, Y., Shin, I., Yee, J., Jung, Y., Cha, S., Kim, D., Kim, H., Kim, S., Lee, D., Lee, Y., Park, B., Pogge, R., Collaboration, T., Mróz, P., Szymański, M., Skowron, J., Poleski, R., Soszyński, I., Pietrukowicz, P., Kozłowski, S., Ulaczyk, K., Rybicki, K., Iwanek, P., Wrona, M., Abe, F., Barry, R., Bhattacharya, A., Donachie, M., Fukui, A., Itow, Y., Kawasaki, K., Kondo, I., Koshimoto, N., Li, M., Matsubara, Y., Muraki, Y., Miyazaki, S., Nagakane, M., Ranc, C., Rattenbury, N., Suematsu, H., Sullivan, D., Sumi, T., Suzuki, D., Tristram, P., Yonehara, A., Mao, S., Wang, T., Zang, W., Zhu, W., Penny, M., Beichman, C., Bryden, G., Calchi Novati, S., Gaudi, B., Henderson, C., Jacklin, S., Stassun, K., Team, T.
Zdroj: The Astronomical Journal
Informace o vydavateli: 2019.
Rok vydání: 2019
Témata: 13. Climate action
Popis: We report a multiplanetary system found from the analysis of microlensing event OGLE-2018-BLG-1011, for which the light curve exhibits a double-bump anomaly around the peak. We find that the anomaly cannot be fully explained by the binary-lens or binary-source interpretations and its description requires the introduction of an additional lens component. The 3L1S (three lens components and a single source) modeling yields three sets of solutions, in which one set of solutions indicates that the lens is a planetary system in a binary, while the other two sets imply that the lens is a multiplanetary system. By investigating the fits of the individual models to the detailed light curve structure, we find that the multiple-planet solution with planet- to-host mass ratios ∼9.5 10−3 and ∼15 10−3 are favored over the other solutions. From the Bayesian analysis, we find that the lens is composed of two planets with masses {1.8}-1.1+3..4 {M}{{J}} and {2.8}-1.7+5.1 {M}{{J}} around a host with a mass {0.18}-0.10+0.33 {M}ȯ and located at a distance {7.1}-1.5+1.1 {kpc}. The estimated distance indicates that the lens is the farthest system among the known multiplanetary systems. The projected planet-host separations are {a}\perp ,2={1.8}-1.5+2.1 {au} ({0.8}-0.6+0.9 {au}) and {a}\perp ,3={0.8}-0.6+0.9 {au}, where the values of a ⊥,2 inside and outside the parenthesis are the separations corresponding to the two degenerate solutions, indicating that both planets are located beyond the snow line of the host, as with the other four multiplanetary systems previously found by microlensing.
Druh dokumentu: Article
Přístupová URL adresa: http://hdl.handle.net/21.11116/0000-0005-D37B-3
Přístupové číslo: edsair.od......1874..96eaa3d5d26b51da5f87e888c4e08b64
Databáze: OpenAIRE
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  Data: We report a multiplanetary system found from the analysis of microlensing event OGLE-2018-BLG-1011, for which the light curve exhibits a double-bump anomaly around the peak. We find that the anomaly cannot be fully explained by the binary-lens or binary-source interpretations and its description requires the introduction of an additional lens component. The 3L1S (three lens components and a single source) modeling yields three sets of solutions, in which one set of solutions indicates that the lens is a planetary system in a binary, while the other two sets imply that the lens is a multiplanetary system. By investigating the fits of the individual models to the detailed light curve structure, we find that the multiple-planet solution with planet- to-host mass ratios ‚àº9.5 10‚àí3 and ‚àº15 10‚àí3 are favored over the other solutions. From the Bayesian analysis, we find that the lens is composed of two planets with masses {1.8}-1.1+3..4 {M}{{J}} and {2.8}-1.7+5.1 {M}{{J}} around a host with a mass {0.18}-0.10+0.33 {M}»Ø and located at a distance {7.1}-1.5+1.1 {kpc}. The estimated distance indicates that the lens is the farthest system among the known multiplanetary systems. The projected planet-host separations are {a}\perp ,2={1.8}-1.5+2.1 {au} ({0.8}-0.6+0.9 {au}) and {a}\perp ,3={0.8}-0.6+0.9 {au}, where the values of a ‚ä•,2 inside and outside the parenthesis are the separations corresponding to the two degenerate solutions, indicating that both planets are located beyond the snow line of the host, as with the other four multiplanetary systems previously found by microlensing.
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      – TitleFull: OGLE-2018-BLG-1011Lb,c: Microlensing Planetary System with Two Giant Planets Orbiting a Low-mass Star
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      – PersonEntity:
          Name:
            NameFull: Ranc, C.
      – PersonEntity:
          Name:
            NameFull: Rattenbury, N.
      – PersonEntity:
          Name:
            NameFull: Suematsu, H.
      – PersonEntity:
          Name:
            NameFull: Sullivan, D.
      – PersonEntity:
          Name:
            NameFull: Sumi, T.
      – PersonEntity:
          Name:
            NameFull: Suzuki, D.
      – PersonEntity:
          Name:
            NameFull: Tristram, P.
      – PersonEntity:
          Name:
            NameFull: Yonehara, A.
      – PersonEntity:
          Name:
            NameFull: Mao, S.
      – PersonEntity:
          Name:
            NameFull: Wang, T.
      – PersonEntity:
          Name:
            NameFull: Zang, W.
      – PersonEntity:
          Name:
            NameFull: Zhu, W.
      – PersonEntity:
          Name:
            NameFull: Penny, M.
      – PersonEntity:
          Name:
            NameFull: Beichman, C.
      – PersonEntity:
          Name:
            NameFull: Bryden, G.
      – PersonEntity:
          Name:
            NameFull: Calchi Novati, S.
      – PersonEntity:
          Name:
            NameFull: Gaudi, B.
      – PersonEntity:
          Name:
            NameFull: Henderson, C.
      – PersonEntity:
          Name:
            NameFull: Jacklin, S.
      – PersonEntity:
          Name:
            NameFull: Stassun, K.
      – PersonEntity:
          Name:
            NameFull: Team, T.
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 01
              M: 01
              Type: published
              Y: 2019
          Identifiers:
            – Type: issn-locals
              Value: edsair
ResultId 1