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首页> 外文期刊>PASJ: Publications of the Astronomical Society of Japan >Evidence for planetary hypothesis for PTFO 8-8695 b with five-year optical/infrared monitoring observations
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Evidence for planetary hypothesis for PTFO 8-8695 b with five-year optical/infrared monitoring observations

机译：PTFO 8-8695 B行星假设的证据，具有五年光学/红外监测观测

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摘要

PTFO 8-8695 b (CVSO 30 b) is a young planet candidate whose host star is a similar to 2.6-Myrold T-Tauri star, and there have been continuous discussions about the nature of this system. To unveil the mystery of this system, we observed PTFO 8-8695 for around five years at optical and infrared bands simultaneously using the Kanata telescope at the Higashi-Hiroshima Observatory. Through our observations, we found that the reported fading event split into two: deeper but phase-shifted "dip-A" and shallower but equiphase "dip-B". These dips disappeared at different epochs, and then, dip-B reappeared. Based on the observed wavelength dependence of dip depths, a dust clump and a precessing planet are likely origins of dip-A and B, respectively. Here we propose "a precessing planet associated with a dust cloud" scenario for this system. This scenario is consistent with the reported change in the depth of fading events, and even with the reported results, which were thought to be evidence against the planetary hypothesis.
机译：PTFO 8-8695 B（CVSO 30 b）是一个年轻的星球候选人，其宿主明星是类似于2.6-myrold Tauri Star的，并且已经持续讨论了该系统的性质。要揭示该系统的神秘，我们在光学和红外频段观察了PTFO 8-8695，在Higashi-Hiroshima天文台的kanata望远镜同时在光学和红外频段进行了大约五年。通过我们的观察，我们发现报告的衰落事件分为两个：更深但相移“倾角”和较浅但屈曲“DIP-B”。这些蘸水物在不同的时期消失，然后，浸渍再次出现。基于观察到的浸渍深度的波长依赖性，分别是灰尘丛和预先形成的倾角和B的起源。在这里，我们提出了“与灰尘云相关的预先存在”该系统的场景。这种情况与报告的衰落事件深度的变化一致，甚至据报道的结果，这被认为是针对行星假说的证据。

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  • 作者

    Tanimoto Yuta; Yamashita Takuya; Ui Takahiro; Uchiyama Mizuho; Kawabata Miho; Mori Hiroki; Nakaoka Tatsuya; Abe Taisei; Itoh Ryosuke; Kanda Yuka; Kawaguchi Kenji; Kawahara Naoki; Otsubo Ikki; Shiki Kensei; Takagi Kengo; Takaki Katsutoshi; Akitaya Hiroshi; Yamanaka Masayuki; Kawabata Koji;

  • 作者单位

    Univ Tokyo Dept Astron Bunkyo Ku 7-3-1 Hongo Tokyo 1130033 Japan;

    Natl Astron Observ Japan 2-21-1 Osawa Mitaka Tokyo 1818588 Japan;

    Hiroshima Univ Grad Sch Sci 1-3-1 Kagamiyama Higashihiroshima Hiroshima 7398526 Japan;

    Natl Astron Observ Japan 2-21-1 Osawa Mitaka Tokyo 1818588 Japan;

    Hiroshima Univ Grad Sch Sci 1-3-1 Kagamiyama Higashihiroshima Hiroshima 7398526 Japan;

    Hiroshima Univ Grad Sch Sci 1-3-1 Kagamiyama Higashihiroshima Hiroshima 7398526 Japan;

    Hiroshima Univ Grad Sch Sci 1-3-1 Kagamiyama Higashihiroshima Hiroshima 7398526 Japan;

    Hiroshima Univ Grad Sch Sci 1-3-1 Kagamiyama Higashihiroshima Hiroshima 7398526 Japan;

    Hiroshima Univ Grad Sch Sci 1-3-1 Kagamiyama Higashihiroshima Hiroshima 7398526 Japan;

    Hiroshima Univ Grad Sch Sci 1-3-1 Kagamiyama Higashihiroshima Hiroshima 7398526 Japan;

    Hiroshima Univ Grad Sch Sci 1-3-1 Kagamiyama Higashihiroshima Hiroshima 7398526 Japan;

    Hiroshima Univ Grad Sch Sci 1-3-1 Kagamiyama Higashihiroshima Hiroshima 7398526 Japan;

    Hiroshima Univ Grad Sch Sci 1-3-1 Kagamiyama Higashihiroshima Hiroshima 7398526 Japan;

    Hiroshima Univ Grad Sch Sci 1-3-1 Kagamiyama Higashihiroshima Hiroshima 7398526 Japan;

    Hiroshima Univ Grad Sch Sci 1-3-1 Kagamiyama Higashihiroshima Hiroshima 7398526 Japan;

    Hiroshima Univ Grad Sch Sci 1-3-1 Kagamiyama Higashihiroshima Hiroshima 7398526 Japan;

    Hiroshima Univ Hiroshima Astrophys Sci Ctr 1-3-1 Kagamiyama Higashihiroshima Hiroshima 7398526 Japan;

    Kyoto Univ Dept Astron Sakyo Ku Kitashirakawa Oiwake Cho Kyoto 6068502 Japan;

    Hiroshima Univ Hiroshima Astrophys Sci Ctr 1-3-1 Kagamiyama Higashihiroshima Hiroshima 7398526 Japan;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 天文学;
  • 关键词

    planetary systems; stars: individual (PTFO 8-8695; CVSO 30); techniques: photometric;

    机译：行星系统;星：个人（PTFO 8-8695;CVSO 30）;技术：光度法;

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