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Related papers: The ExoMol project: Software for computing large m…

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A new hot line list for $^{14}$NH$_3$ is presented. The line list CoYuTe was constructed using an accurate, empirically refined potential energy surface and a CCSD(T)/aug-cc-pVQZ ab initio dipole moment surface of ammonia, previously…

Solar and Stellar Astrophysics · Physics 2019-11-26 Phillip A. Coles , Sergei N. Yurchenko , Jonathan Tennyson

A revised rotation-vibration line list for the combined hydrogen cyanide (HCN) / hydrogen isocyanide (HNC) system is presented. The line list uses {\it ab initio} transition intensities calculated previously (Harris et al., ApJ, 2002, 578,…

Solar and Stellar Astrophysics · Physics 2014-06-27 R. J. Barber , J. K. Strange , C. Hill , O. L. Polyansky , G. Ch. Mellau , S. N. Yurchenko , Jonathan Tennyson

ExoCross is a Fortran code for generating spectra (emission, absorption) and thermodynamic properties (partition function, specific heat etc.) from molecular line lists. Input is taken in several formats, including ExoMol and HITRAN…

Earth and Planetary Astrophysics · Physics 2018-06-27 Sergei N. Yurchenko , Ahmed Al-Refaie , Jonathan Tennyson

Indications of aluminium monoxide in atmospheres of exoplanets are being reported. Studies using high-resolution spectroscopy should allow a strong detection but require high accuracy laboratory data. A \textsc{marvel} (measured active…

Earth and Planetary Astrophysics · Physics 2021-10-29 Charles A. Bowesman , Meiyin Shuai , Sergei N. Yurchenko , Jonathan Tennyson

Line lists for the sulphur-containing molecules SH (the mercapto radical) and NS are computed as part of the ExoMol project. These line lists consider transitions within the $X$ ${}^2\Pi$ ground state for $^{32}$SH, $^{33}$SH, $^{34}$SH and…

Solar and Stellar Astrophysics · Physics 2018-05-02 Sergei N. Yurchenko , Wesley Bond , Maire N. Gorman , Lorenzo Lodi , Laura K. McKemmish , William Nunn , Rohan Shah , Jonathan Tennyson

Extensive rovibrational line lists are constructed for 12 isotopologues of carbon dioxide: $^{12}$C$^{16}$O$_2$, $^{13}$C$^{16}$O$_2$, $^{12}$C$^{17}$O$_2$, $^{13}$C$^{17}$O$_2$, $^{12}$C$^{18}$O$_2$, $^{13}$C$^{18}$O$_2$,…

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…

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

A theoretical line list for $^{15}$NH$_3$ CoYuTe-15 is presented based on the empirical potential energy and ab initio dipole moments surfaces developed and used for the production of the ExoMol line list CoYuTe for $^{14}$NH$_3$. The…

Accurate line lists are important for the description of the spectroscopic nature of small molecules. While a line list for CN (an important molecule for chemistry and astrophysics) exists, no underlying energy spectroscopic model has been…

Chemical Physics · Physics 2021-06-08 Anna-Maree Syme , Laura K. McKemmish

Line lists for magnesium oxide are computed and extensive comparisons are made with existing experimental spectra. The LiTY line lists cover all ro-vibration transitions within the five lowest-lying electronic states ($X\,{}^1\Sigma^+$,…

Solar and Stellar Astrophysics · Physics 2019-04-30 Heng Ying Li , Jonathan Tennyson , Sergei N. Yurchenko

An accurate line list, called XABC, is computed for nitric oxide which covers its pure rotational, vibrational and rovibronic spectra. A mixture of empirical and theoretical electronic transition dipole moments are used for the final…

Earth and Planetary Astrophysics · Physics 2021-08-24 Qianwei Qu , Sergei N. Yurchenko , Jonathan Tennyson

Silicon dioxide (SiO$_2$) is expected to occur in the atmospheres of hot rocky super-Earth exoplanets but a lack of spectroscopic data is hampering its possible detection. Here, we present the first, comprehensive molecular line list for…

Earth and Planetary Astrophysics · Physics 2020-05-29 A. Owens , E. K. Conway , J. Tennyson , S. N. Yurchenko

Accurate line lists for the carbon dimer, C$_2$, are presented. These line lists cover rovibronic transitions between the eight lowest electronic states: $X\,{}^{1}\Sigma_{g}^{+}$, $a\,{}^{3}\Pi_{u}$, $A\,{}^{1}\Pi_{u}$,…

Solar and Stellar Astrophysics · Physics 2018-12-19 Sergei N. Yurchenko , István Szabó , Elizaveta Pyatenko , Jonathan Tennyson

Accurate and complete rotational, rotational-vibrational and rotational-vibrational-electronic line lists are calculated for sodium hydride: both the NaH and NaD isotopologues are considered. These line lists cover all ro-vibrational states…

Astrophysics of Galaxies · Physics 2015-06-02 Tom Rivlin , Lorenzo Lodi , Sergei N. Yurchenko , Jonathan Tennyson , Robert J. Le Roy

New line lists for four isotopologues of nickel monohydride, $^{58}$NiH, $^{60}$NiH, $^{62}$NiH, and $^{58}$NiD are presented covering the wavenumber range $<10000$ cm$^{-1}$ ($\lambda > 1$ $\mu$m), $J$ up to 37.5 for transitions within and…

Line lists for the ground electronic ground state for six major isotopologues of nitric oxide are presented. The line lists are constructed using empirical energy levels (and line positions) and high-level {\it ab inito} intensities. The…

Earth and Planetary Astrophysics · Physics 2017-06-28 Andy Wong , Sergei N. Yurchenko , Peter Bernath , Holger S. P. Müller , Stephanie McConkey , Jonathan Tennyson

Sulphur trioxide (SO$_3$) is a trace species in the atmospheres of the Earth and Venus, as well as well as being an industrial product and an environmental pollutant. A variational line list for $^{32}$S$^{16}$O$_{3}$, named UYT2, is…

Earth and Planetary Astrophysics · Physics 2016-09-21 Daniel S. Underwood , Sergei N. Yurchenko , Jonathan Tennyson , Ahmed F. Al-Refaie , Sønnik Clausen , Alexander Fateev

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

A variationally computed $^{28}$SiH$_4$ rotation-vibration line list applicable for temperatures up to $T=1200\,$K is presented. The line list, called OY2T, considers transitions with rotational excitation up to $J=42$ in the wavenumber…

Chemical Physics · Physics 2017-12-29 A. Owens , A. Yachmenev , W. Thiel , J. Tennyson , S. N. Yurchenko

Any future detection of the calcium monohydroxide radical (CaOH) in stellar and exoplanetary atmospheres will rely on accurate molecular opacity data. Here, we present the first comprehensive molecular line list of CaOH covering the \A--\X\…

Earth and Planetary Astrophysics · Physics 2022-10-25 Alec Owens , Alexander Mitrushchenkov , Sergei N. Yurchenko , Jonathan Tennyson