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arXiv 1306.2889astro-ph.EPastro-ph.IMastro-ph.SR
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双星系统宜居带的计算I:S型双星

Calculating the Habitable Zone of Binary Star Systems I: S-Type Binaries

L. Kaltenegger, N. Haghighipour

摘要:

我们已经开发了一个全面的方法来计算的宜居带(HZ)的行星托管的S-型双星系统的边界。我们的方法是通用的,并考虑到两颗恒星的贡献的位置和程度的二进制HZ不同的恒星光谱型。我们研究了双星偏心率和恒星能量分布对宜居带范围的影响。结果表明,在双星的质量比和轨道偏心率的组合允许行星形成围绕恒星的系统进行成功,一个不太明亮的次要的主要的宜居带的位置上的效果一般是可以忽略不计的。然而,当次级更明亮时,它可以影响HZ的范围。我们提出的详细推导我们的方法,并讨论其应用程序的二进制HZ周围的主要和次要的主序星的FF,MM和FM二进制,以及两个已知的行星托管二进制阿尔法岑AB和HD 196886。

英文摘要:

We have developed a comprehensive methodology for calculating the boundaries of the habitable zone (HZ) of planet-hosting S-type binary star systems. Our approach is general and takes into account the contribution of both stars to the location and extent of the Binary HZ with different stellar spectral types. We have studied how the binary eccentricity and stellar energy distribution affect the extent of the habitable zone. Results indicate that in binaries where the combination of mass-ratio and orbital eccentricity allows planet formation around a star of the system to proceed successfully, the effect of a less luminous secondary on the location of the primary's habitable zone is generally negligible. However, when the secondary is more luminous, it can influence the extent of the HZ. We present the details of the derivations of our methodology and discuss its application to the Binary HZ around the primary and secondary main sequence stars of an FF, MM, and FM binary, as well as two known planet-hosting binaries alpha Cen AB and HD 196886.

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