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首页> 外文会议>International Astronomical Union., Symposium >Atmospheric Parameters and Luminosities of Nearby M Dwarfs - Estimating Habitable Exoplanet Detectability with the E-ELT
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Atmospheric Parameters and Luminosities of Nearby M Dwarfs - Estimating Habitable Exoplanet Detectability with the E-ELT

机译：附近的大气参数和发光，与E-ELT估算可居住的外延检测性

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摘要

We derive T_(eff) and [Fe/H] for a sample of 72 nearby M-dwarfs with Hipparcos parallaxes and δ < +30. Spectra, acquired at the Observatório do Pico dos Dias, Brazil, have R =10,000 and S/N? 100 for nearly all targets in the AA8380-8880 range. Atmospheric parameters were derived from VJHK colors and a system of spectral line indices calibrated against sample stars with interferometric T_(eff) and [Fe/H] from detailed analysis of FGK binary companions. A PCA method of calibration yields internal errors within 70 K and 0.1 dex for T_(eff) and [Fe/H]. For 18 stars we present the first T_(eff) or [Fe/H] derivation in the literature. We compute the star's luminosities, calculate the position of their habitable zones and estimate that, were all of they to harbour rocky planets inside their HZ, 15-20 of these would be detectable by the E-ELT Planetary Camera and Spectrograph.
机译：我们使用Hipparcos视差和Δ<+30的72附近的M-Dwarfs样本来获得T_（EFF）和[FE / H]。在Devicepatório获得的Spectra，巴西Do Pico Dos DiaS获取，具有r = 10,000和s / n？ 100在AA8380-8880范围内几乎所有目标。大气参数来自VJHK颜色和谱线索引系统，校准与干涉式T_（EFF）和[FE / H]的样品恒星校准，从FGK二进制同伴的详细分析。 PCA校准方法在70 k和0.1 dex内产生内部误差，用于T_（eff）和[Fe / h]。对于18颗星，我们介绍了文献中的第一个T_（Eff）或[Fe / H]衍生。我们计算明星的亮度，计算其可居住的区域的位置并估计，他们所有人都在他们的Hz内港口港口，其中15-20个将可通过E-Elt行星相机和光谱仪检测。

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