AB INITIO EQUATIONS OF STATE FOR HYDROGEN (H-REOS.3) AND HELIUM (He-REOS.3) AND THEIR IMPLICATIONS FOR THE INTERIOR OF BROWN DWARFS
AB INITIO EQUATIONS OF STATE FOR HYDROGEN (H-REOS.3) AND HELIUM (He-REOS.3) AND THEIR IMPLICATIONS FOR THE INTERIOR OF BROWN DWARFS
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DOI：
10.1088/0067-0049/215/2/21
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发表时间：
2014-12-01
影响因子：
8.7
通讯作者：
Redmer, Ronald
中科院分区：
文献类型：
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作者：
Becker, Andreas;Lorenzen, Winfried;Redmer, Ronald
本文提出了适用于温度从60 K到10（7）K，密度从10（-10）g cm（-3）到10（3）g cm（-3）的氢和氦的新状态方程。它们包括一组扩展的从头算EOS数据的强相关的量子制度与来自其他方法的邻近地区的数据的准确连接。我们比较线性混合等温线的基础上，我们的EOS表与可用的真实的混合物数据。这个新的EOS数据的第一个重要的天体物理应用是计算木星的走廊模型，并与最近的结果进行比较。其次，质量半径关系的计算褐矮星（BD），我们比较预测来自广泛使用的状态方程的Saumon，Chabrier，和范霍恩。此外，我们计算了具有不同质量的典型BD的内部模型，即Corot-3b，Gliese-229 b和Corot-15 b，以及巨行星KOI-889 b。中心压力和密度的预测值相差高达10%，这取决于所使用的EOS。我们的EOS表在本文的补充材料中提供。
We present new equations of state (EOSs) for hydrogen and helium covering a wide range of temperatures from 60 K to 10(7) K and densities from 10(-10) g cm(-3) to 10(3) g cm(-3). They include an extended set of ab initio EOS data for the strongly correlated quantum regime with an accurate connection to data derived from other approaches for the neighboring regions. We compare linear mixing isotherms based on our EOS tables with available real mixture data. A first important astrophysical application of this new EOS data is the calculation of interiormodels for Jupiter and comparison with recent results. Second, mass-radius relations are calculated for Brown Dwarfs (BDs) which we compare with predictions derived from the widely used EOS of Saumon, Chabrier, and van Horn. Furthermore, we calculate interior models for typical BDs with different masses, namely, Corot-3b, Gliese-229b, and Corot-15b, and the giant planet KOI-889b. The predictions for the central pressures and densities differ by up to 10% dependent on the EOS used. Our EOS tables are made available in the supplemental material of this paper.