纯过境模型的新偏心率参数化

IF 3.3 3区物理与天体物理 Q2 ASTRONOMY & ASTROPHYSICS

Publications of the Astronomical Society of the Pacific Pub Date : 2024-01-22 DOI:10.1088/1538-3873/ad1412

Jason D. Eastman

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引用次数: 0

摘要

我们提出了一种新的仅用于凌日拟合的偏心率参数化方法，它使我们能够有效地对偏心率和周天参数进行采样，同时能够生成一个开普勒轨道上的行星围绕其主星运行的自洽模型。通过对随机生成的 330 个系统的模拟拟合，我们证明了典型的参数化通常会导致行星偏心率的不准确和过于精确的确定。然而，我们提出的参数化方法使我们能够在仅有凌日数据的情况下准确地--而且往往是精确地--恢复模拟行星系统的偏心率。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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A Novel Eccentricity Parameterization for Transit-only Models

We present a novel eccentricity parameterization for transit-only fits that allows us to efficiently sample the eccentricity and argument of periastron, while being able to generate a self-consistent model of a planet in a Keplerian orbit around its host star. With simulated fits of 330 randomly generated systems, we demonstrate that typical parameterizations often lead to inaccurate and overly precise determinations of the planetary eccentricity. However, our proposed parameterization allows us to accurately—and often precisely—recover the eccentricity for the simulated planetary systems with only transit data available.

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来源期刊

Publications of the Astronomical Society of the Pacific 地学天文-天文与天体物理

CiteScore

6.70

自引率

5.70%

发文量

103

审稿时长

4-8 weeks

期刊介绍： The Publications of the Astronomical Society of the Pacific (PASP), the technical journal of the Astronomical Society of the Pacific (ASP), has been published regularly since 1889, and is an integral part of the ASP''s mission to advance the science of astronomy and disseminate astronomical information. The journal provides an outlet for astronomical results of a scientific nature and serves to keep readers in touch with current astronomical research. It contains refereed research and instrumentation articles, invited and contributed reviews, tutorials, and dissertation summaries.