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GJ 1214b MIRI phase curve analysis

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Zenodo2023-06-17 更新2026-05-26 收录
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Outputs of the fiducial Gj 1214b analysis. Files: result.txt: eclipse depth, transit depth, and nightside Fp/Fs per wavelength bin. This file also reports amplitude and phase offset, but these are calculated ONLY from the first-order component of the phase curve, ignoring the second-order component. See amplitudes_and_phases.txt for the (relative) amplitude and phase offset while taking the second-order component into account. lightcurves.txt: best fit spectroscopic light curves Generate plots.ipynb: a Jupyter notebook that generates the *.png plots in the folder. If you're confused about the format of the data files, consult this notebook. *.png files: generated by the aforementioned Jupyter notebook. If you're confused about what a plot is showing, consult the notebook. white_lightcurve.txt: best fit white light curve white_envelope.txt, white_envelope_3sigma.txt: 1 sigma and 3 sigma envelopes of the white light curve white_light_result.txt: system parameters inferred from white light curve white_chain.npy: the emcee chain for the white light curve. Parameters: delta_t_transit, delta_t_eclipse, Fp, C1, D1, C2, D2, rp/rs, a/Rs, b, error_factor, Fstar, Aramp, tau, cy, slope. white_lnprobs.npy: ln(posterior) for every sample of the white chain chain_6000_6500.npy: the chain for the spectroscopic light curve spanning 6000--6500 Angstroms. Parameters: Fp, C1, D1, C2, D2, error_factor, rp/rs, Fstar, Aramp, tau, cy, slope lnprobs_6000_6500.npy: ln(posterior) for the spectroscopic chain mentioned above amplitudes_and_phases.txt: relative amplitude, (max - min) / max, of the phase curve, along with the phase offset, defined as the position of the phase curve maximum relative to mid-eclipse. Negative means east. calc_amplitude_offset.py: script that calculates the amplitudes and phase offsets in the above file, starting from the spectroscopic chain. Usage: python calc_amplitude_offset.py 6000, for the bin 6000-6500 Angstrom. fiducial_stellar_spectrum.fits: the stellar spectrum we adopted data.pkl: the reduced data that we fit for with emcee positions.txt: x and y positions inferred for the trace

本数据集包含GJ 1214b基准分析(fiducial analysis)的全部输出结果,各文件详情如下: 1. `result.txt`:存储各波长区间的食深(eclipse depth)、凌星深度(transit depth)以及夜面行星光度与恒星光度之比(Fp/Fs)。该文件同时报告了振幅与相位偏移,但二者仅通过相位曲线的一阶分量计算得到,未考虑二阶分量。如需获取考虑二阶分量时的(相对)振幅与相位偏移,请参考`amplitudes_and_phases.txt`文件。 2. `lightcurves.txt`:经最优拟合的光谱测光曲线(spectroscopic light curves)。 3. `Generate plots.ipynb`:用于生成本文件夹内所有*.png格式图表的Jupyter Notebook。若对数据文件的格式存在疑问,可查阅该Notebook。 4. *.png格式文件:由上述Jupyter Notebook生成。若对图表展示的内容存在疑问,可查阅该Notebook。 5. `white_lightcurve.txt`:经最优拟合的白光测光曲线(white light curve)。 6. `white_envelope.txt`与`white_envelope_3sigma.txt`:白光测光曲线的1σ与3σ置信包络线。 7. `white_light_result.txt`:通过白光测光曲线反演得到的系统参数。 8. `white_chain.npy`:用于白光测光曲线拟合的emcee采样链,包含参数包括:凌星时间偏移量(delta_t_transit)、食时间偏移量(delta_t_eclipse)、Fp、C1、D1、C2、D2、行星半径与恒星半径之比(rp/rs)、半长轴与恒星半径之比(a/Rs)、冲击参数(b)、误差因子(error_factor)、恒星光度(Fstar)、振幅斜坡(Aramp)、弛豫时间(tau)、基线偏移(cy)、斜率(slope)。 9. `white_lnprobs.npy`:白光采样链中每个样本的对数后验概率(ln(posterior))。 10. `chain_6000_6500.npy`:对应6000~6500埃(Angstroms)波段的光谱测光曲线采样链,包含参数包括:Fp、C1、D1、C2、D2、误差因子(error_factor)、行星半径与恒星半径之比(rp/rs)、恒星光度(Fstar)、振幅斜坡(Aramp)、弛豫时间(tau)、基线偏移(cy)、斜率(slope)。 11. `lnprobs_6000_6500.npy`:上述光谱测光采样链对应每个样本的对数后验概率。 12. `amplitudes_and_phases.txt`:相位曲线的相对振幅(计算方式为(max - min)/max),以及相位偏移——即相位曲线峰值相对于食甚时刻的位置,负值代表东侧。 13. `calc_amplitude_offset.py`:用于从光谱测光采样链出发,计算上述文件中振幅与相位偏移的Python脚本。使用方法:以6000为例,执行`python calc_amplitude_offset.py 6000`即可对应6000~6500埃的波长区间。 14. `fiducial_stellar_spectrum.fits`:本次分析采用的恒星光谱(stellar spectrum)。 15. `data.pkl`:经过预处理的观测数据,用于通过emcee进行拟合。 16. `positions.txt`:通过迹线反演得到的x、y坐标位置。
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Zenodo
创建时间:
2023-03-06
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