二元氮-甲烷混合物新的亚固相边界的发现

IF 3 2区物理与天体物理 Q2 ASTRONOMY & ASTROPHYSICS

Icarus Pub Date : 2025-10-04 DOI:10.1016/j.icarus.2025.116837

Shaelyn M. Raposa , Sugata P. Tan , William M. Grundy , Gerrick E. Lindberg , Jordan K. Steckloff , Stephen C. Tegler , Jennifer Hanley , Anna E. Engle , Cecilia L. Thieberger

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引用次数: 0

摘要

从氮-甲烷二元混合物的拉曼光谱中获得了以前从未检测到的亚固相边界的新数据。然后使用稳健的热力学状态方程CRYOCHEM 2.0对实验数据进行评估。本工作中发现的实验数据与热力学之间的一致性为今后在低温下的应用引入了一种新的相图。这种混合物是主要的双星系统，代表了冥王星、海卫一和厄里斯等冰冷天体上最丰富的挥发物。新的相图将使我们更好地了解这些天体的大气和表面，现在、过去或未来的地球物理条件。

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Discovery of a new sub-solidus phase boundary of the binary nitrogen-methane mixture

New data of a sub-solidus phase boundary that has never been detected before were derived from Raman spectroscopy for the binary mixture nitrogen-methane. The experimental data were then evaluated using a robust thermodynamic equation of state, CRYOCHEM 2.0. The consistency between experimental data and thermodynamics found in this work introduces a new phase diagram to be used in future applications at low temperatures.

This mixture is the major binary system that represents the most abundant volatiles on icy bodies, like Pluto, Triton, and Eris. The new phase diagram will lead to a better understanding of the atmospheres and surfaces of these bodies, at present, past, or future geophysical conditions.

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来源期刊

Icarus 地学天文-天文与天体物理

CiteScore

6.30

自引率

18.80%

发文量

356

审稿时长

2-4 weeks

期刊介绍： Icarus is devoted to the publication of original contributions in the field of Solar System studies. Manuscripts reporting the results of new research - observational, experimental, or theoretical - concerning the astronomy, geology, meteorology, physics, chemistry, biology, and other scientific aspects of our Solar System or extrasolar systems are welcome. The journal generally does not publish papers devoted exclusively to the Sun, the Earth, celestial mechanics, meteoritics, or astrophysics. Icarus does not publish papers that provide "improved" versions of Bode''s law, or other numerical relations, without a sound physical basis. Icarus does not publish meeting announcements or general notices. Reviews, historical papers, and manuscripts describing spacecraft instrumentation may be considered, but only with prior approval of the editor. An entire issue of the journal is occasionally devoted to a single subject, usually arising from a conference on the same topic. The language of publication is English. American or British usage is accepted, but not a mixture of these.