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Related papers: Spectroscopic line parameters of NO, NO$_2$, and N…

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A methane line list for the HITEMP spectroscopic database, covering 0-13,400 cm$^{-1}$ ($>$746 nm), is presented. To create this compilation, ab initio line lists of $^{12}$CH$_{4}$ from Rey et al. (2017) ApJ, 847, 105 (provided at separate…

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

The latest version of the HITRAN molecular spectroscopic database, HITRAN2020, has recently been released featuring many updates, including line-by-line broadening parameters (and their temperature dependence) appropriate for the dominant…

Earth and Planetary Astrophysics · Physics 2022-06-22 Frances M. Skinner , Robert J. Hargreaves , Iouli E. Gordon

Spectroscopic parameters of methane from many different studies were gathered to improve the HITRAN database towards its 2024 version. After a validation process using high-resolution FTS and CRDS spectra, about 80,000 lines of the four…

New hot line lists for five isotopologues of N$_2$O are presented, for the parent $^{14}$N$_2^{16}$O and 4 singly substituted species $^{14}$N$_2^{17}$O, $^{14}$N$_2^{18}$O, $^{14}$N$^{15}$N$^{16}$O and $^{15}$N$^{14}$N$^{16}$O. The line…

Earth and Planetary Astrophysics · Physics 2024-10-01 Sergei N. Yurchenko , Thomas M. Mellor , Jonathan Tennyson

Imidogen (NH) is a reactive molecule whose presence in astrochemical environments is of interest due to its role in the formation of nitrogen-containing molecules and as a potential probe of nitrogen abundance. Spectroscopic NH monitoring…

Earth and Planetary Astrophysics · Physics 2024-05-24 Armando N. Perri , Laura K. McKemmish

The amount of water vapor in the terrestrial atmosphere is highly variable both spatially and temporally. In the tropics it sometimes constitutes 4-5% of the atmosphere. At the same time collisional broadening of spectral lines by water…

Atmospheric and Oceanic Physics · Physics 2020-01-08 Yan Tan , Roman V. Kochanov , Laurence S. Rothman , Iouli E. Gordon

New line lists are presented for the two most abundant water isotopologues; H$_{2}$$^{16}$O and H$_{2}$$^{18}$O. The H$_{2}$$^{16}$O line list extends to 25710 cm$^{-1}$ with intensity stabilities provided via ratios of calculated…

Earth and Planetary Astrophysics · Physics 2020-02-19 Eamon K. Conway , Iouli E. Gordon , Aleksandra A. Kyuberis , Oleg L. Polyansky , Jonathan Tennyson , Nikolai F. Zobov

The ExoMol database aims to provide comprehensive molecular line lists for exoplanetary and other hot atmospheres. The data are expanded by inclusion of empirically derived line lists taken from the literature for a series of diatomic…

Solar and Stellar Astrophysics · Physics 2020-02-18 Yixin Wang , Jonathan Tennyson , Sergei N. Yurchenko

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…

We present a new spectroscopic pipeline designed to analyse large numbers of hot massive stars homogeneously. The pipeline has been developed to utilise large grids of FASTWIND non-LTE, line blanketed models in which spherical geometry is…

Solar and Stellar Astrophysics · Physics 2025-10-31 PA Crowther , JM Bestenlehner

In order to complete Stark broadening data for Ne II, and O III lines, needed for analysis of stellar atmospheres, we determined, within the semiclassical perturbation method, the missing Stark broadening parameters for the broadening by…

Solar and Stellar Astrophysics · Physics 2018-03-14 Milan S. Dimitrijevic , Andjelka Kovacevic , Zoran Simic , Sylvie Sahal-Brechot

Interstellar molecules, which play an important role in astrochemistry, are identified using observed spectral lines. Despite the advent of spectral analysis tools in the past decade, the identification of spectral lines remains a tedious…

Astrophysics of Galaxies · Physics 2025-02-07 Yisheng Qiu , Tianwei Zhang , Thomas Möller , XueJian Jiang , Zihao Song , Huaxi Chen , Donghui Quan

Simultaneous analysis of the C_2 and CN molecular bands in the 5100-5200 and 7930-8100A spectral regions is a promising alternative for the accurate determination of the carbon (C) and nitrogen (N) abundance in the atmospheres of the…

Solar and Stellar Astrophysics · Physics 2022-09-28 T. Ryabchikova , N. Piskunov , Y. Pakhomov

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

Hot methane spectra are important in environments ranging from flames to the atmospheres of cool stars and exoplanets. A new spectroscopic line list, 10to10, for $^{12}$CH$_4$ containing almost 10 billion transitions is presented. This…

Solar and Stellar Astrophysics · Physics 2014-10-06 Sergei N. Yurchenko , Jonathan Tennyson , Jeremy Bailey , Morgan D. J. Hollis , Giovanna Tinetti

This work introduces new low-temperature gas opacities, in the range 3.2 <= log(T/K) <= 4.5, computed with the AESOPUS code under the assumption of thermodynamic equilibrium (Marigo &_Aringer_2009). In comparison to the previous version…

Solar and Stellar Astrophysics · Physics 2022-12-07 Paola Marigo , Bernhard Aringer , Leo Girardi , Alessandro Bressan

Molecules reside broadly in the interstellar space and can be detected via spectroscopic observations. To date, more than 271 molecular species have been identified in interstellar medium or circumstellar envelopes. Molecular spectroscopic…

Astrophysics of Galaxies · Physics 2022-09-27 Xin Liu , Fujun Du

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

We aim at deriving the molecular abundances and temperatures of the hot molecular cores in the high-mass star-forming region NGC 6334I and consequently deriving their physical and astrochemical conditions. In the framework of the Herschel…

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