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.

引用

页数：10

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