arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1502.02639astro-ph.IMastro-ph.EPastro-ph.GA
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天文冰的红外光谱和光学常数:II。乙烷和乙烯

Infrared Spectra and Optical Constants of Astronomical Ices: II. Ethane and Ethylene

R. L. Hudson, P. A. Gerakines, M. H. Moore

摘要:

红外光谱观测已经确定了冥王星和其他TNO上存在碳氢化合物冰,但如果没有准确的光学常数(n,k)和参考光谱,就无法推断出这些分子的丰度。在本文中,我们提出了我们最近的测量乙烷(C $_2$ H $_6$)和乙烯(C $_2$ H $_4$)在多个冰相和在多个温度下的近红外和中红外光学常数。在我们最近的工作乙炔(C $_2$ H $_2$),我们还报告了新的测量每个冰在670 nm的折射率。在可能的情况下,与早期的工作进行比较,并提供我们新结果的电子版本。

英文摘要:

Infrared spectroscopic observations have established the presence of hydrocarbon ices on Pluto and other TNOs, but the abundances of such molecules cannot be deduced without accurate optical constants (n, k) and reference spectra. In this paper we present our recent measurements of near- and mid-infrared optical constants for ethane (C$_2$H$_6$) and ethylene (C$_2$H$_4$) in multiple ice phases and at multiple temperatures. As in our recent work on acetylene (C$_2$H$_2$), we also report new measurements of the index of refraction of each ice at 670 nm. Comparisons are made to earlier work where possible, and electronic versions of our new results are made available.

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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