An Accurate, Extensive, and Practical Line List of Methane for the HITEMP Database

  title={An Accurate, Extensive, and Practical Line List of Methane for the HITEMP Database},
  author={Robert J. Hargreaves and Iouli E. Gordon and Michael Rey and Andrei V. Nikitin and Vladimir G Tyuterev and Roman Kochanov and L S Rothman},
  journal={The Astrophysical Journal Supplement Series},
A methane line list for the HITEMP spectroscopic database, covering 0-13,400 cm$^{-1}$ ($>$746 nm), is presented. To create this compilation, ab initio line lists of $^{12}$CH$_{4}$ from Rey et al. (2017) ApJ, 847, 105 (provided at separate temperatures in the TheoReTS information system), are now combined with HITRAN2016 methane data to produce a single line list suitable for high-temperature line-by-line calculations up to 2000 K. An effective-temperature interpolation model was created in… 
The ExoMolOP database: Cross sections and k-tables for molecules of interest in high-temperature exoplanet atmospheres
A publicly available database of opacities for molecules of astrophysical interest, ExoMolOP, has been compiled for over 80 species, based on the latest line list data from the ExoMol, HITEMP and
Line list of 12CH4 in the 4300–4600 cm−1 region
Using HITRAN to Model Opacities for Planetary Atmospheres: Test case of Microwave Spectra of NH$_3$, SO$_2$ and PH$_3$
The latest version of the HITRAN molecular spectroscopic database, HITRAN2020, has recently been released featuring many updates, including line-by-line broadening parameters (and their temperature
High Accuracy Molecular Line Lists for Studies of Exoplanets and Other Hot Atmospheres
The desire to characterize and model the atmospheres of the many extrasolar planets that have been discovered over the last three decades is a major driver of current astronomy. However, this goal is
Molecular cross-sections for high-resolution spectroscopy of super-Earths, warm Neptunes, and hot Jupiters
High-resolution spectroscopy (HRS) has been used to detect a number of species in the atmospheres of hot Jupiters. Key to such detections is accurately and precisely modelled spectra for
Calculated spectroscopic databases for the VAMDC portal: New molecules and improvements


Spectroscopic line parameters of NO, NO2, and N2O for the HITEMP database
A hybrid line list for CH4 and hot methane continuum.
This approach significantly eases the use of large high temperature line lists as the computationally expensive calculation of pressure- dependent profiles only need to be performed for a relatively small number of lines.
Methane line parameters in the HITRAN2012 database
A high-accuracy computed water line list
A computed list of H2 16 O infrared transition frequencies and intensities is presented. The list, BT2, was produced using a discrete variable representation two-step approach for solving the
Hot Methane Line Lists for Exoplanet and Brown Dwarf Atmospheres
We present comprehensive experimental line lists of methane (CH{sub 4}) at high temperatures obtained by recording Fourier transform infrared emission spectra. Calibrated line lists are presented for
The paper describes the construction of complete sets of hot methane lines based on accurate ab initio potential and dipole moment surfaces and extensive first-principle calculations. Four line lists
Accurate Theoretical Methane Line Lists in the Infrared up to 3000 K and Quasi-continuum Absorption/Emission Modeling for Astrophysical Applications
Modeling atmospheres of hot exoplanets and brown dwarfs requires high- T databases that include methane as the major hydrocarbon. We report a complete theoretical line list of 12 CH 4 in the infrared