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首页> 外文期刊>The Astrophysical journal >MILLIMAGNITUDE PHOTOMETRY FOR TRANSITING EXTRASOLAR PLANETARY CANDIDATES. Ⅱ. TRANSITS OF OGLE-TR-113-b IN THE OPTICAL AND NEAR-IR
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MILLIMAGNITUDE PHOTOMETRY FOR TRANSITING EXTRASOLAR PLANETARY CANDIDATES. Ⅱ. TRANSITS OF OGLE-TR-113-b IN THE OPTICAL AND NEAR-IR

机译:用于过渡太阳系行星候选物的毫米光度法。 Ⅱ。 OGLE-TR-113-b在光学和近红外中的过渡

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We present precise V- and K_s-band transit photometry for the planetary host star OGLE-TR-113. Using the K_s-band photometry, we confirm the dwarf nature of OGLE-TR-113 and obtain new estimates for its effective temperature, distance, and reddening. We employ the Ⅴ-band photometry to obtain planetary and orbit parameters from the transit fit, a = 0.0232 ± 0.0038 AU, orbital period P = 1.4324752 ± 0.0000015 day, i = 86.7-90, and R_p = 1.09 ± 0.09 R_J. These values are in excellent agreement with previous works. Assuming a mass M_p = 1.32 ± 0.19 M_J for the planet, we obtain its mean density ρ = 1.26 ± 0.50 g cm~(-3), also in agreement with previous works. The transit observed in the K_s band has a larger scatter, and we find its amplitude to be consistent with that in the Ⅴ band. In this way, we find an independent confirmation of the planetary nature of OGLE-TR-113b.
机译:我们为行星宿主恒星OGLE-TR-113提供精确的V和K_s波段透射光度法。使用K_s波段光度法,我们确认了OGLE-TR-113的矮化性质,并获得了其有效温度,距离和变红的新估计。我们采用Ⅴ波段测光法从过渡拟合中获得行星和轨道参数,a = 0.0232±0.0038 AU,轨道周期P = 1.4324752±0.0000015天,i = 86.7-90,R_p = 1.09±0.09 R_J。这些值与以前的作品非常吻合。假设行星的质量M_p = 1.32±0.19 M_J,我们得到的平均密度ρ= 1.26±0.50 g cm〜(-3),这也与先前的工作一致。在K_s波段观察到的跃迁具有较大的散射,我们发现其振幅与Ⅴ波段的振幅一致。这样,我们发现OGLE-TR-113b的行星性质具有独立性。

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