SPECTROSCOPIC DETERMINATION OF THE PHASE-COMPOSITION AND TEMPERATURE OF NITROGEN ICE ON TRITON

被引：49

作者：

TRYKA, KA

BROWN, RH

ANICICH, V

CRUIKSHANK, DP

OWEN, TC

机构：

[1] JET PROP LAB,PASADENA,CA 91109

[2] NASA,AMES RES CTR,MOFFETT FIELD,CA 94035

[3] UNIV HAWAII,INST ASTRON,HONOLULU,HI 96822

来源：

SCIENCE | 1993年 / 261卷 / 5122期

关键词：

D O I：

10.1126/science.261.5122.751

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Laboratory spectra of the first overtone band (2.1480 micrometers, 4655.4 reciprocal centimeters) of solid nitrogen show additional structure at 2.1618 micrometers (4625.8 reciprocal centimeters) over a limited temperature range. The spectrum of Neptune's satellite Triton shows the nitrogen overtone band as well as the temperature-sensitive component. The temperature dependence of this band may be used in conjunction with ground-based observations of Triton as an independent means of determining the temperature of surface deposits of nitrogen ice. The surface temperature of Triton is found to be 38.0(-1.0)+2.0 K, in agreement with previous temperature estimates and measurements. There is no spectral evidence for the presence of alpha-nitrogen on Triton's surface, indicating that there is less than 10 percent carbon monoxide in solid solution with the nitrogen on the surface.

引用

页码：751 / 754

页数：4

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