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arXiv 1303.2573astro-ph.IMastro-ph.EP
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适用于任意边缘变暗规律的凌日系外行星建模新方法

New approach for modeling of transiting exoplanets for arbitrary limb-darkening law

D. Kjurkchieva, D. Dimitrov, A. Vladev, V. Yotov

摘要:

利用二重积分的单重化,给出了行星凌日正问题的一种新解法。在我们的直接问题解决方案的基础上,我们创建了代码TAC-制造商的快速和交互式计算的合成行星过境的数值计算的积分。我们的方法的验证是通过与广泛传播的Mandel & Agol(2002)方法的结果进行比较的情况下,线性,二次和平方根边缘暗化的法律和各种组合的模型参数。我们的方法第一次允许使用任意的主恒星的边缘变暗规律。这一优点加上计算的实际任意精度,使该代码成为一个有价值的工具,面对地面和空间观测的光度精度不断提高的挑战。

英文摘要:

We present a new solution of the direct problem of planet transits based on transformation of double integrals to single ones. On the basis of our direct problem solution we created the code TAC-maker for rapid and interactive calculation of synthetic planet transits by numerical computations of the integrals. The validation of our approach was made by comparison with the results of the wide-spread Mandel & Agol (2002) method for the cases of linear, quadratic and squared root limb-darkening laws and various combinations of model parameters. For the first time our approach allows the use of arbitrary limb-darkening law of the host star. This advantage together with the practically arbitrary precision of the calculations make the code a valuable tool that faces the challenges of the continuously increasing photometric precision of the ground-based and space observations.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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