Browse Abstracts & Presentations - 2021 International Symposium on Molecular Spectroscopy by Subject "Linelists"

• (International Symposium on Molecular Spectroscopy, 2021-06-22)
\begin{wrapfigure}{r}{0pt} \includegraphics[scale=0.28]{Ethylene_nu_7_band_995K_2.3atm.eps} \end{wrapfigure} To address the notable lack of knowledge on high-temperature absorption cross sections of important molecular ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-23)
Recently published work\footnote {DM Hewett, PF Bernath, BE Billinghurst. 2019 “Infrared absorption cross sections of isobutane with hydrogen and nitrogen as broadening gases.” \emph{Journal of Quantitative Spectroscopy ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-22)
A procedure to generate the exact kinetic energy operator in valence coordinates, based on S{\o}rensen's method for constructing non-rigid Hamiltonians, is presented. This method is currently being applied to the ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-22)
This work was motivated by difficulties encountered while trying to calibrate laser excitation spectra, taken in short (1 {cm$^{-1}$}) scans around 438 nm, by matching optogalvanic transitions from a Uranium-Argon hollow ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-22)
We report an \textit{ab initio} study on the rovibronic spectroscopy of the open-shell diatomic molecule phosphorous mononitride, PN. The study considers nine lowest electronic states, X$^{1}\Sigma^{+}$, A$^{1}\Pi$, ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-22)
CASSCF + MRCI calculations for the diatomic molecules, SiN and SO, have been performed using the C$_{2v}$ point group symmetry. For SiN, five lowest bound electronic have been were considered, $X$~$^2\Sigma^+$, $A$~$^2\Pi$, ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-23)
Indications of aluminium monoxide (AlO) in the atmospheres of exoplanets are being reported and it is predicted to be an important source of opacity in hot Jupiters. Studies using high resolution spectroscopy should allow ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-22)
Sodium oxide (NaO) is observed in airglows in the Earth's atmosphere and likely has astronomical importance. This study concerns the transitions with X~$^2\Pi$ and and to the very low-lying ($T_0 < 2000$ cm$^{-1}$) ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-23)
Stellar, substellar, and planetary atmosphere models are all highly sensitive to the input absorption cross-sections and subject to errors arising from incomplete line lists and the lack of appropriate pressure-broadening ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-23)
The high-temperature molecular spectroscopic database, HITEMP [1], aims to provide line lists for use in the modeling of high-temperature environments. Usage can range from the sensing of specific transitions in combustion ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-22)
The HITRAN2020 database will be publicly released this year. It is a coordinated effort of experimentalists, theoreticians, atmospheric and planetary scientists who measure, calculate and validate the HITRAN data. The lists ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-23)
Hydrocarbons are of considerable importance in studies of planetary atmospheres such as Titan and Giant Planets. In Titan, ethane (C$_2$H$_6$) is the second most abundant hydrocarbon and is also widespread in Giant Planets. ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-23)
We computed an accurate line list, called \texttt{XABC}, for nitric oxide (NO) which covers its pure rotational, vibrational and rovibronic spectra belonging to the lowest four electronic states of NO, i.e. X\,$^2\Pi$, ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-23)
The ExoMol project (www.exomol.com) provides comprehensive line lists for the study of exoplanets and other hot bodies. As part of the ERC-funded ExoMolHD project these line lists are being refactored to facilitate their ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-23)
In search of elusive species that might be captured in the Cassini/CIRS and the JWST/MIRI spectral observations, high-precision laboratory spectroscopy constitutes a critical input to Titan atmospheric modeling emission ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-22)
Observation of \chem{HONO} concentration change in the atmosphere can improve our understanding of atmospheric chemistry details and their effects on the regional air quality and global climate [1]. However, highly desired ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-23)
The HITRAN (high-resolution transmission molecular spectroscopic database) is an international standard for reference molecular spectroscopy, particularly in simulating planetary and terrestrial atmospheric spectra [1]. ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-23)
The atmospheres of hot rocky super-Earths will have very different spectroscopic signatures compared to gas giants or cooler objects. Many of these exoplanets possess short orbital periods, hence hot atmospheres, and will ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-22)
\begin{wrapfigure}{l}{0pt} \includegraphics[scale=0.28]{Illustrative_Spectra_1000K_Square.eps} \end{wrapfigure} An infrared absorption cross-section database for gas-phase molecules at high-temperatures and high-pressures ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-22)
We present broadband dual frequency comb laser measurements of pure and air-broadened H$_{2}$O absorption from 6656 to 7540 cm$^{-1}$ (1326-1502 nm) with a spectral point spacing of 0.0068 cm$^{-1}$. Sample pressure and ...

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