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arXiv 1106.0635astro-ph.EP
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太阳系外行星分类学

Taxonomy of the extrasolar planet

E. Plávalová

摘要:

当一颗恒星被描述为光谱类别G2 V时,我们知道这颗恒星与我们的太阳相似。我们知道它的大致质量、温度、年龄和大小。当使用太阳系外行星数据库时,有一个分类尺度(分类)是非常有用的,例如,哈佛恒星分类。分类法必须易于解释,并提供有关太阳系外行星的最相关信息。我提出了以下的太阳系外行星分类尺度与四个参数。第一个参数是关于太阳系外行星的质量,以其他已知行星的质量为单位,其中M代表水星的质量,E代表地球的质量,N代表海王星的质量,J代表木星的质量。第二个参数是行星与母恒星的距离(半长轴),以10为底的对数表示。第三个参数是太阳系外行星的平均戴森温度,我为它建立了四个主要的温度等级; F代表冻结类,W代表水类,G代表气体类,R代表烘烤类。然而,我设计了一个额外的类:P,脉冲星类,它涉及围绕脉冲星运行的太阳系外行星。第四个参数是偏心率。如果太阳系外行星表面的属性已知,我们就能够建立这个附加参数,其中t代表类地行星,g代表气态行星,i代表冰行星。根据这个分类尺度,例如地球是1 E0 W 0 t,海王星是1N1.5F0i,太阳系外行星55 Cnc e是9 E-1.8R1。关键词:目录-太阳系外行星-宜居带-行星

英文摘要:

When a star is described as a spectral class G2V, we know that the star is similar to our Sun. We know its approximate mass, temperature, age, and size. When working with an extra-solar planet database, it is very useful to have a taxonomy scale (classification) such as, for example, the Harvard classification for stars. The taxonomy has to be easily interpreted and present the most relevant information about extra-solar planets. I propose the following the extra-solar planet taxonomy scale with four parameters. The first parameter concerns the mass of an extra-solar planet in the form of the units of the mass of other known planets, where M represents the mass of Mercury, E that of Earth, N Neptune, and J Jupiter. The second parameter is the planet's distance from its parent star (semi-major axis) described in logarithm with base 10. The third parameter is the mean Dyson temperature of the extra-solar planet, for which I established four main temperature classes; F represents the Freezing class, W the Water Class, G the Gaseous Class, and R the Roasters Class. I devised one additional class, however: P, the Pulsar Class, which concerns extra-solar planets orbiting pulsar stars. The fourth parameter is eccentricity. If the attributes of the surface of the extra-solar planet are known, we are able to establish this additional parameter where t represents a terrestrial planet, g a gaseous planet, and i an ice planet. According to this taxonomy scale, for example, Earth is 1E0W0t, Neptune is 1N1.5F0i, and extra-solar planet 55 Cnc e is 9E-1.8R1. Key words: Catalogues - Extra-solar planet - Habitable zone - Planets

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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