2012/05/29 by C. Hill, Christian Hill, S. N. Yurchenko +2 · 1 citation
Chemistry · Earth and Planetary Sciences · Physics and Astronomy · #Absorption (acoustics) #Advanced Chemical Physics Studies #Astronomy #Astrophysics #Atmospheric Ozone and Climate #Computational physics #Exoplanet #Geometry #Hot Jupiter #Interpolation (computer graphics) #Line (geometry) #Materials science #Optics #Physics #Planet #Radiative transfer #Range (aeronautics) #Spectral line #Spectral resolution #Spectroscopy and Laser Applications #astro-ph.EP
paper · pdf · doi:10.1016/j.icarus.2012.07.028
published as ICARUS 226, 1673-1677 (2013) · Icarus (submitted)
arxiv created 2012/05/29 · openalex publication_date 2012/08/13 · arxiv updated 2014/06/27 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Exoplanets, and in particular hot ones such as hot Jupiters, require a very significant quantities of molecular spectroscopic data to model radiative transport in their atmospheres or to interpret their spectra. This data is commonly provided in the form of very extensive transition line lists. The size of these line lists is such that constructing a single model may require the consideration of several billion lines. We present a procedure to simplify this process based on the use of cross sections. Line lists for water, H3+, HCN /HNC and ammonia have been turned into cross sections on a fine enough grid to preserve their spectroscopic features. Cross sections are provided at a fixed range of temperatures and an interpolation procedure which can be used to generate cross sections at arbitrary temperatures is described. A web-based interface (www.exomol.com/xsec) has been developed to allow astronomers to download cross sections at specified temperatures and spectral resolution. Specific examples are presented for the key water molecule.