A possible explanation for the presence of crystalline H2O-ice on Kuiper Belt Objects
A possible explanation for the presence of crystalline H2O-ice on Kuiper Belt Objects
复制标题
柯伊伯带天体上存在结晶水冰的可能解释
DOI:
10.1016/j.icarus.2020.113943
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发表时间:
2020
期刊:
影响因子:
3.2
通讯作者:
Sturner, Steven J.
中科院分区:
文献类型:
--
作者:
Loeffler, Mark J.;Tribbett, Patrick D.;Cooper, John F.;Sturner, Steven J.
The detection of crystalline H2O-ice on multiple surfaces of Kuiper Belt Objects (KBOs) seems to contrast with what scientists understand about the surface environment of these objects, as previous estimates suggest that radiolysis should have easily amorphized these objects' surface over their lifetimes. Here, we use a detailed laboratory approach to show that crystalline H2O-ice can be amorphized by energetic electrons at temperatures as high as 70 K. However, the estimated time needed to completely amorphize the H2O-ice present on the surface of a KBO to the depth probed by near-infrared spectroscopy is only slightly less than the age of the solar system. Given the uncertainties involved in these types of extrapolations and the possibility of a resurfacing event occurring in these objects lifetime, the detection of crystalline or at least partially crystalline H2O-ice on KBOs should be expected.
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DOI:
10.1063/1.3079612
发表时间:
2009
期刊:
The Journal of chemical physics
影响因子:
--
作者:
M. Loeffler;R. Baragiola
通讯作者:
R. Baragiola
DOI:
10.1016/0167-5087(83)91070-0
发表时间:
1983
期刊:
Nuclear Instruments and Methods in Physics Research
影响因子:
--
作者:
J. Boring;Robert E. Johnson;C. Reimann;J. W. Garret;W. Brown;K. J. Marcantonio
通讯作者:
K. J. Marcantonio
影响因子:
2.2
作者:
H.
通讯作者:
H.
影响因子:
2
作者:
J. Lepault;R. Freeman;J. Dubochet
通讯作者:
J. Dubochet
影响因子:
64.8
作者:
D. Jewitt;J. Luu
通讯作者:
J. Luu