ExoMol: molecular line lists for exoplanet and other atmospheres

Abstract

The discovery of extrasolar planets is one of the major scientific advances of the last two decades. Hundreds of planets have now been detected and astronomers are beginning to characterise their composition and physical characteristics. To do this requires a huge quantity of spectroscopic data most of which is not available from laboratory studies. The ExoMol project will offer a comprehensive solution to this problem by providing spectroscopic data on all the molecular transitions of importance in the atmospheres of exoplanets. These data will be widely applicable to other problems and will be used for studies on cool stars, brown dwarfs and circumstellar environments. This paper lays out the scientific foundations of this project and reviews previous work in this area. A mixture of first principles and empirically-tuned quantum mechanical methods will be used to compute comprehensive and very large rotation-vibration and rotation-vibration-electronic (rovibronic) line lists. Methodologies will be developed for treating larger molecules such as methane and nitric acid. ExoMol will rely on these developments and the use of state-of-the-art computing.

MNRAS (in press)

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Cited by in corpus (229)

• The Cologne Database for Molecular Spectroscopy, CDMS, in the Virtual Atomic and Molecular Data Centre, VAMDC
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• Gaseous Mean Opacities for Giant Planet and Ultracool Dwarf Atmospheres over a Range of Metallicities and Temperatures
• ExoMol line lists III: An improved hot rotation-vibration line list for HCN and HNC
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• Tau-REx I: A next generation retrieval code for exoplanetary atmospheres
• ExoMol Molecular linelists -- XXXIII. The spectrum of Titanium Oxide
• ExoMol molecular line lists XXXV: a rotation-vibration line list for hot ammonia
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• ExoMol molecular line lists - XVI: The rotation-vibration spectrum of hot H${}_2$S
• The 2020 release of the ExoMol database: molecular line lists for exoplanet and other hot atmospheres
• ExoMol line lists XVIII. The high temperature spectrum of VO
• Detection of an atmosphere around the super-Earth 55 Cancri e
• ExoMol line lists -- XXXIX. Ro-vibrational molecular line list for CO${}_2$
• Duo: a general program for calculating spectra of diatomic molecules
• On the Cool Side: Modeling the Atmospheres of Brown Dwarfs and Giant Planets
• ExoCross: a general program for generating spectra from molecular line lists
• ExoMol molecular line lists - XIV: The rotation-vibration spectrum of hot SO${}_2$
• Early Release Science of the exoplanet WASP-39b with JWST NIRCam
• Detection of titanium oxide in the atmosphere of a hot Jupiter
• TauREx III: A fast, dynamic and extendable framework for retrievals
• Accuracy tests of radiation schemes used in hot Jupiter global circulation models
• ExoMol line lists VII: The rotation-vibration spectrum of phosphine up to 1500 K
• A self-consistent cloud model for brown dwarfs and young giant exoplanets: comparison with photometric and spectroscopic observations
• A hybrid line list for CH${}_4$ and hot methane continuum
• The ExoMolOP Database: Cross-sections and k-tables for Molecules of Interest in High-Temperature Exoplanet Atmospheres
• Hot Exoplanet Atmospheres Resolved with Transit Spectroscopy (HEARTS) IV. A spectral inventory of atoms and molecules in the high-resolution transmission spectrum of WASP-121 b
• Tau-REx II: Retrieval of emission spectra
• ExoMol line lists II: The ro-vibrational spectrum of SiO
• ExoMol molecular line lists V: The ro-vibrational spectra of NaCl and KCl
• Observing Exoplanets with High Dispersion Coronagraphy. I. The scientific potential of current and next-generation large ground and space telescopes
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• ExoMol molecular line lists: IX The spectrum of AlO
• A library of ATMO forward model transmission spectra for hot Jupiter exoplanets
• The spectrum of hot methane in astronomical objects using a comprehensive computed line list
• 3D modeling of GJ1214b's atmosphere: vertical mixing driven by an anti-Hadley circulation
• Exploring Biases of Atmospheric Retrievals in Simulated JWST Transmission Spectra of Hot Jupiters
• Vibrational transition moments of CH${}_4$ from first principles
• The UK Met Office GCM with a sophisticated radiation scheme applied to the hot Jupiter HD 209458b
• Simulating the cloudy atmospheres of HD 209458 b and HD 189733 b with the 3D Met Office Unified Model
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• Strong biases in retrieved atmospheric composition caused by strong day-night chemical heterogeneities
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• Non-detection of TiO and VO in the atmosphere of WASP-121b using high-resolution spectroscopy
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• ExoMol molecular line lists - XXIII: spectra of PO and PS
• Symmetry adapted ro-vibrational basis functions for variational nuclear motion calculations: TROVE approach
• Perspective: Accurate ro-vibrational calculations on small molecules
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• ExoMol line lists XXIV: A new hot line list for silicon monohydride, SiH
• Influence of Stellar Flares on the Chemical Composition of Exoplanets and Spectra
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• ExoMol line lists XXVIII: The rovibronic spectrum of AlH
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• TRAPPIST-1: Global Results of the Spitzer Exploration Science Program {\it Red Worlds}
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• ExoMol line lists XXXI: Spectroscopy of lowest eights electronic states of C${}_2$
• Combining low- to high-resolution transit spectroscopy of HD 189733b. Linking the troposphere and the thermosphere of a hot gas giant
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• A comparison of chemical models of exoplanet atmospheres enabled by TauREx 3.1
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• A high-resolution line list for AlO
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• ExoMol line lists XXV: A hot line list for silicon sulphide, SiS
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• ExoMol line lists -- XXXVIII. High-temperature molecular line list of silicon dioxide (SiO${}_2$)
• Assessment of Isoprene as a Possible Biosignature Gas in Exoplanets with Anoxic Atmospheres
• Is TiO emission present in the ultra-hot Jupiter WASP-33b? A reassessment using the improved ExoMol Toto line list
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• ExoMol molecular line lists: XI The spectrum of nitric acid
• Is the atmosphere of the ultra-hot Jupiter WASP-121b variable?
• KELT-11 b: Abundances of water and constraints on carbon-bearing molecules from the Hubble transmission spectrum
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• 3.8um Imaging of 400-600K Brown Dwarfs and Orbital Constraints for WISEP J045853.90+643452.6AB
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