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
收藏
页数：10
相关论文
共 50 条
  • [41] Hot Exoplanet Atmospheres Resolved with Transit Spectroscopy (HEARTS) III. Atmospheric structure of the misaligned ultra-hot Jupiter WASP-121b
    Bourrier, V.
    Ehrenreich, D.
    Lendl, M.
    Cretignier, M.
    Allart, R.
    Dumusque, X.
    Cegla, H. M.
    Suarez-Mascareno, A.
    Wyttenbach, A.
    Hoeijmakers, H. J.
    Melo, C.
    Kuntzer, T.
    Astudillo-Defru, N.
    Giles, H.
    Heng, K.
    Kitzmann, D.
    Lavie, B.
    Lovis, C.
    Murgas, F.
    Nascimbeni, V.
    Pepe, F.
    Pino, L.
    Segransan, D.
    Udry, S.
    ASTRONOMY & ASTROPHYSICS, 2020, 635
  • [42] The First Y Dwarf Data from JWST Show that Dynamic and Diabatic Processes Regulate Cold Brown Dwarf Atmospheres
    Leggett, S. K.
    Tremblin, Pascal
    ASTROPHYSICAL JOURNAL, 2023, 959 (02)
  • [43] ExoMol line lists - VIII. A variationally computed line list for hot formaldehyde
    Al-Refaie, Ahmed F.
    Yachmenev, Andrey
    Tennyson, Jonathan
    Yurchenko, Sergei N.
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2015, 448 (02) : 1704 - 1714
  • [44] Dust in brown dwarfs and extra-solar planets VI. Assessing seed formation across the brown dwarf and exoplanet regimes
    Lee, G. K. H.
    Blecic, J.
    Helling, Ch.
    ASTRONOMY & ASTROPHYSICS, 2018, 614
  • [45] ExoMol line lists - XV. A new hot line list for hydrogen peroxide
    Al-Refaie, Ahmed F.
    Polyansky, Oleg L.
    Ovsyannikov, Roman I.
    Tennyson, Jonathan
    Yurchenko, Sergei N.
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2016, 461 (01) : 1012 - 1022
  • [46] Discovery of a faint field methane brown dwarf from ES0 NTT and VLT observations
    Cuby, JG
    Saracco, P
    Moorwood, AFM
    D'Odorico, S
    Lidman, C
    Comerón, F
    Spyromilio, J
    ASTRONOMY & ASTROPHYSICS, 1999, 349 (02) : L41 - L44
  • [47] ExoMol line lists XXIV: a new hot line list for silicon monohydride, SiH
    Yurchenko, Sergei N.
    Sinden, Frances
    Lodi, Lorenzo
    Hill, Christian
    Gorman, Maire N.
    Tennyson, Jonathan
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2018, 473 (04) : 5324 - 5333
  • [48] Comparison of line-by-line and band models of near-IR methane absorption applied to outer planet atmospheres
    Sromovsky, L. A.
    Fry, P. M.
    Boudon, V.
    Campargue, A.
    Nikitin, A.
    ICARUS, 2012, 218 (01) : 1 - 23
  • [49] Accurate Theoretical Methane Line Lists in the Infrared up to 3000 K and Quasi-continuum Absorption/Emission Modeling for Astrophysical Applications
    Rey, Michael
    Nikitin, Andrei V.
    Tyuterev, Vladimir G.
    ASTROPHYSICAL JOURNAL, 2017, 847 (02)
  • [50] Hot Exoplanet Atmospheres Resolved with Transit Spectroscopy (HEARTS) VI. Non-detection of sodium with HARPS on the bloated super-Neptune WASP-127b
    Seidel, J. V.
    Lendl, M.
    Bourrier, V.
    Ehrenreich, D.
    Allart, R.
    Sousa, S. G.
    Cegla, H. M.
    Bonfils, X.
    Conod, U.
    Grandjean, A.
    Wyttenbach, A.
    Astudillo-Defru, N.
    Bayliss, D.
    Heng, K.
    Lavie, B.
    Lovis, C.
    Melo, C.
    Pepe, F.
    Segransan, D.
    Udry, S.
    ASTRONOMY & ASTROPHYSICS, 2020, 643
12345