ExoMol line lists VIII: A variationally computed line list for hot formaldehyde

Abstract

A computed line list for formaldehyde, H${}_2{}^{12}$C${}^{16}$O, applicable to temperatures up to $T=1500$~K is presented. An empirical potential energy and {\it ab initio} dipole moment surfaces are used as the input to nuclear motion program TROVE. The resulting line list, referred to as \textit{AYTY}, contains 10.3 million rotational-vibrational states and around 10 billion transition frequencies. Each transition includes associated Einstein-$A$ coefficients and absolute transition intensities, for wavenumbers below 10~000 cm\(^{-1}\) and rotational excitations up to \(J=70\). Room-temperature spectra are compared with laboratory measurements and data currently available in the HITRAN database. These spectra show excellent agreement with experimental spectra and highlight the gaps and limitations of the HITRAN data. The full line list is available from the CDS database as well as at \url{www.exomol.com}.

14 pages, 8 figures, 7 tables

References in corpus (2)

• ExoMol line lists VII: The rotation-vibration spectrum of phosphine up to 1500 K
• Formaldehyde Densitometry of Starburst Galaxies

Cited by in corpus (16)

• The 2020 release of the ExoMol database: molecular line lists for exoplanet and other hot atmospheres
• A hybrid line list for CH${}_4$ and hot methane continuum
• Five key exoplanet questions answered via the analysis of 25 hot Jupiter atmospheres in eclipse
• Perspective: Accurate ro-vibrational calculations on small molecules
• Symmetry adapted ro-vibrational basis functions for variational nuclear motion calculations: TROVE approach
• The ExoMol project: Software for computing large molecular line lists
• Laboratory spectra of hot molecules: data needs for hot super-Earth exoplanets
• ExoMol molecular line lists - XVII The rotation-vibration spectrum of hot SO${}_3$
• ExoMol line lists XV: A new hot line list for hydrogen peroxide
• A high-resolution line list for AlO
• Aluminium oxide in the atmosphere of hot Jupiter WASP-43b
• An improved rovibrational linelist of formaldehyde, \spec{h212c16o}
• The TW Hya Rosetta Stone Project II: Spatially resolved emission of formaldehyde hints at low-temperature gas-phase formation
• A Variationally Computed IR Line List for the Methyl Radical CH${}_3$
• Evidence for chromium hydride in the atmosphere of Hot Jupiter WASP-31b
• General variational approach to nuclear-quadrupole coupling in rovibrational spectra of polyatomic molecules