HOT METHANE LINE LISTS FOR EXOPLANET AND BROWN DWARF ATMOSPHERES

被引：34
作者：
Hargreaves, Robert J. [1 ]
Beale, Christopher A. [2 ]
Michaux, Laurent [2 ]
Irfan, Melis [2 ]
Bernath, Peter F. [1 ,3 ]
机构：
[1] Univ York, Dept Chem, York YO10 5DD, N Yorkshire, England
[2] Univ York, Dept Phys, York YO10 5DD, N Yorkshire, England
[3] Old Dominion Univ, Dept Chem & Biochem, Norfolk, VA 23529 USA
来源：
ASTROPHYSICAL JOURNAL | 2012年 / 757卷 / 01期
关键词：
brown dwarfs; infrared: general; methods: laboratory; molecular data; planetary systems; techniques: spectroscopic; AB-INITIO PREDICTIONS; DAYSIDE SPECTRUM; ENERGY-LEVELS; PLANET; REGION; CM(-1); WATER; SPECTROSCOPY; ABSORPTION;
D O I：
10.1088/0004-637X/757/1/46
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We present comprehensive experimental line lists of methane (CH4) at high temperatures obtained by recording Fourier transform infrared emission spectra. Calibrated line lists are presented for the temperatures 300-1400 degrees C at twelve 100 degrees C intervals spanning the 960-5000 cm(-1) (2.0-10.4 mu m) region of the infrared. This range encompasses the dyad, pentad, and octad regions, i.e., all fundamental vibrational modes along with a number of combination, overtone and hot bands. Using our CH4 spectra, we have estimated empirical lower state energies (E-low in cm(-1)) and our values have been incorporated into the line lists along with line positions ((nu) over tilde in cm(-1)) and calibrated line intensities (S' in cm molecule(-1)). We expect our hot CH4 line lists to find direct application in the modeling of planetary atmospheres and brown dwarfs.
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页数：10
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