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The ExoMol database currently provides comprehensive line lists for modelling the spectroscopic properties of molecules in hot atmospheres. Extending the spectral range of the data provided to ultraviolet (UV) wavelengths brings into play…

Earth and Planetary Astrophysics · Physics 2023-06-08 Jonathan Tennyson , Marco Pezzella , Jingxin Zhang , Sergei N. Yurchenko

Atmospheric studies of exoplanets and brown dwarfs are a cutting-edge and rapidly evolving area of astrophysics research. Calculating models of exoplanet or brown dwarf spectra requires knowledge of the wavelength-dependent absorption of…

Instrumentation and Methods for Astrophysics · Physics 2024-10-22 Arnav Agrawal , Ryan J. MacDonald

A new hot line list is calculated for $^{12}$CH$_4$ in its ground electronic state. This line list, called 10to10, contains 9.8 billion transitions and should be complete for temperatures up to 1500 K. It covers the wavelengths longer than…

Earth and Planetary Astrophysics · Physics 2014-06-27 Sergei N. Yurchenko , Jonathan Tennyson

The ExoMol database (www.exomol.com) provides molecular data for spectroscopic studies of hot atmospheres. These data are widely used to model atmospheres of exoplanets, cool stars and other astronomical objects, as well as a variety of…

The spectrum of an exoplanet reveals the physical, chemical, and biological processes that have shaped its history and govern its future. However, observations of exoplanet spectra are complicated by the overwhelming glare of their host…

Earth and Planetary Astrophysics · Physics 2018-06-13 J. L. Birkby

SpectraPlot is a web-based application for simulating spectra of atomic and molecular gases. At the time this manuscript was written, SpectraPlot consisted of four primary tools for calculating: 1) atomic and molecular absorption spectra,…

Accurate rotational-vibrational line lists for $^{31}$P$^{14}$N and $^{31}$P$^{15}$N in their ground electronic states are computed. The line lists are produced using an empirical potential energy curve obtained by fitting to the…

Astrophysics of Galaxies · Physics 2015-04-14 Leo Yorke , Sergei N. Yurchenko , Lorenzo Lodi , Jonathan Tennyson

We describe the recent updates to the ExoMol database regarding the molecular spectral line shapes. ExoMol provides comprehensive molecular line lists with a special emphasis on the applications involving characterization of atmospheres of…

Earth and Planetary Astrophysics · Physics 2017-11-01 Sergey Yurchenko , Jonathan Tennyson , Emma J. Barton

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 MoLLIST databases. These data are generally…

Molecular line-transition lists are an essential ingredient for radiative-transfer calculations. With recent databases now surpassing the billion-lines mark, handling them has become computationally prohibitive, due to both the required…

Earth and Planetary Astrophysics · Physics 2017-11-29 Patricio Cubillos

Molecular line lists are important for modelling absorption and emission processes in atmospheres of different astronomical objects, such as cool stars and exoplanets. In order to be applicable for high temperatures, line lists for…

Earth and Planetary Astrophysics · Physics 2017-09-20 Sergei N. Yurchenko , David S. Amundsen , Jonathan Tennyson , Ingo P. Waldmann

We present the easy-to-use, publicly available, Python package petitRADTRANS, built for the spectral characterization of exoplanet atmospheres. The code is fast, accurate, and versatile; it can calculate both transmission and emission…

Earth and Planetary Astrophysics · Physics 2019-07-23 P. Mollière , J. P. Wardenier , R. van Boekel , Th. Henning , K. Molaverdikhani , I. A. G. Snellen

Modelling the emission properties of compact high energy sources such as X-ray binaries, AGN or gamma-ray bursts represents a complex problem. Contributions of numerous processes participate non linearly to produce the observed spectra:…

Astrophysics · Physics 2009-11-13 R. Belmont , J. Malzac , A. Marcowith

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…

Astrophysics of Galaxies · Physics 2015-06-02 Ahmed F. Al-Refaie , Andrey Yachmenev , Jonathan Tennyson , Sergei N. Yurchenko

A rovibronic line list for the ground ($X$ $^3\Sigma^-$) and first excited ($a$ $^1\Delta$) states of phosphinidene, $^{31}$PH, is computed. The line list is designed for studies of exoplanetary and cool stellar atmospheres with…

Earth and Planetary Astrophysics · Physics 2019-07-17 Jonathan Langleben , Jonathan Tennyson , Sergei N. Yurchenko , Peter Bernath

We present CONAN (COde for exoplaNet ANalysis), an open-source Python package for comprehensive analyses of exoplanetary systems. It provides a unified Bayesian framework to simultaneously analyze diverse exoplanet datasets to derive global…

Instrumentation and Methods for Astrophysics · Physics 2025-08-29 Babatunde Akinsanmi , Monika Lendl , Andreas Krenn

Accurate rotation-vibration line lists are calculated for silicon monoxide. Line lists are presented for the main isotopologue, $^{28}$Si$^{16}$O, and for four monosubsituted isotopologues ($^{29}$Si$^{16}$O, $^{30}$Si$^{16}$O,…

Solar and Stellar Astrophysics · Physics 2013-09-27 Emma J. Barton , Sergei N. Yurchenko , Jonathan Tennyson

Spectroscopy of exoplanetary atmospheres has become a well established method for the characterisation of extrasolar planets. We here present a novel inverse retrieval code for exoplanetary atmospheres. TauRex (Tau Retrieval for Exoplanets)…

Earth and Planetary Astrophysics · Physics 2015-06-22 Ingo P. Waldmann , Giovanna Tinetti , Marco Rocchetto , Emma J. Barton , Sergey N. Yurchenko , Jonathan Tennyson

The majority of stars are now thought to support exoplanets. Many of those exoplanets discovered thus far are categorized as rocky objects with an atmosphere. Most of these objects are however hot due to their short orbital period. Models…

Earth and Planetary Astrophysics · Physics 2017-06-13 Jonathan Tennyson , Sergei N. Yurchenko

We present the ExoPhoto database (https://exomol.com/exophoto/), an extension of the ExoMol database, specifically developed to address the growing need for high-accuracy, temperature-dependent photodissociation cross section data towards…

Earth and Planetary Astrophysics · Physics 2025-05-29 Qing-He Ni , Christian Hill , Sergei N. Yurchenko , Marco Pezzella , Alexander Fateev , Zhi Qin , Olivia Venot , Jonathan Tennyson