O. L. Polyansky
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View article: Unprecedented accuracy in molecular line-intensity ratios from frequency-based measurements
Unprecedented accuracy in molecular line-intensity ratios from frequency-based measurements Open
Accurate determination of molecular transition intensities is vital to quantum chemistry and metrology, yet even simple diatomic molecules have historically been limited to 0.1% accuracy. Here, we show that frequency-domain measurements of…
View article: Corrigendum to “Partition sums for molecules and their isotopologues for HITRAN2024” [Journal of Quantitative Spectroscopy & Radiative Transfer 345 (2025) 109568]
Corrigendum to “Partition sums for molecules and their isotopologues for HITRAN2024” [Journal of Quantitative Spectroscopy & Radiative Transfer 345 (2025) 109568] Open
The authors regret that in the determination of the partition sums for 16O14N18O, a python code building a dictionary of the term values from Marinina et al. [JQSRT 2022; 290: 108312] neglected the symmetry designations in the quantum numb…
View article: Implementation of SI-traceability in the TCCON and COCCON observations: the  Metrology for Comparable and Trustworthy Greenhouse gas remote sensing datasets (24GRD06 MetCTG) project
Implementation of SI-traceability in the TCCON and COCCON observations: the  Metrology for Comparable and Trustworthy Greenhouse gas remote sensing datasets (24GRD06 MetCTG) project Open
Satellite remote sensing of global greenhouse gas (GHG) concentrations provides invaluable information about GHG sources and sinks, supporting efficient climate mitigation policies. Recently, the accuracy targets of upcoming GHG satellite …
View article: ExoMol Line Lists -- LXII: Ro-Vibrational Energy Levels and Line-Strengths for the Propadienediylidene (C3) in its Ground Electronic State
ExoMol Line Lists -- LXII: Ro-Vibrational Energy Levels and Line-Strengths for the Propadienediylidene (C3) in its Ground Electronic State Open
Improved opacities are needed for modelling the atmospheres and evolution of cool carbon-rich stars and extra-solar planets; in particular, contributions made by the astrophysically important propadienediylidene (C$_3$) molecule need, at a…
View article: ExoMol line lists – LXII. Ro-vibrational energy levels and line strengths for the propadienediylidene (C3) in its ground electronic state
ExoMol line lists – LXII. Ro-vibrational energy levels and line strengths for the propadienediylidene (C3) in its ground electronic state Open
Improved opacities are needed for modelling the atmospheres and evolution of cool carbon-rich stars and extra-solar planets; in particular, contributions made by the astrophysically important propadienediylidene (${\mathrm{C}}_{3}$) molecu…
View article: The 2024 release of the ExoMol database: Molecular line lists for exoplanet and other hot atmospheres
The 2024 release of the ExoMol database: Molecular line lists for exoplanet and other hot atmospheres Open
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 te…
View article: The 2024 release of the ExoMol database: molecular line lists for exoplanet and other hot atmospheres
The 2024 release of the ExoMol database: molecular line lists for exoplanet and other hot atmospheres Open
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 te…
View article: Measurement and calculation of CO (7–0) overtone line intensities
Measurement and calculation of CO (7–0) overtone line intensities Open
Intensities of 14 lines in the sixth overtone (7–0) band of carbon monoxide (12C16O) are measured in the visible range between 14 300 and 14 500 cm−1 using a frequency-stabilized cavity ring-down spectrometer. This is the first observation…
View article: ExoMol line lists – L: high-resolution line lists of H3+, H2D+, D2H+, and D3+
ExoMol line lists – L: high-resolution line lists of H3+, H2D+, D2H+, and D3+ Open
New MiZo line lists are presented for the D2H+ and D$_3^+$ isotopologues of H$_3^+$. These line lists plus the existing H$_3^+$ MiZATeP and the ST H2D+ line lists are updated using empirical energy levels generated using the marvel procedu…
View article: PSEUDOTACHYLITES OF THE MAIN ANABAR FAULT (ANABAR SHIELD): PETROLOGICAL-RHEOLOGICAL INDICATORS OF MELTING AND AGE OF DEFORMATIONS
PSEUDOTACHYLITES OF THE MAIN ANABAR FAULT (ANABAR SHIELD): PETROLOGICAL-RHEOLOGICAL INDICATORS OF MELTING AND AGE OF DEFORMATIONS Open
The results of the 40 Ar / 39 Ar dating of the vein material of pseudotachylite from the deformation zone of the Main Anabar fault (Northern Yakutia) are presented. The depth of formation of pseudotachyllites is reconstructed using the pri…
View article: Subpromille Measurements and Calculations of CO (3–0) Overtone Line Intensities
Subpromille Measurements and Calculations of CO (3–0) Overtone Line Intensities Open
Intensities of lines in the near-infrared second overtone band (3-0) of ^{12}C^{16}O are measured and calculated to an unprecedented degree of precision and accuracy. Agreement between theory and experiment to better than 1‰ is demonstrate…
View article: Sub-percent accuracy for the intensity of a near-infrared water line at 10,670 cm<sup>−1</sup>: experiment and analysis
Sub-percent accuracy for the intensity of a near-infrared water line at 10,670 cm<sup>−1</sup>: experiment and analysis Open
Laser measurements of the intensity of (201) 3$_{22}$ -- (000) 2$_{21}$ near-infrared water absorption line at 10670.1 \cm\ are made using three different Herriott cells. These measurements determine the line intensity with an standard dev…
View article: Sub-percent accuracy for the intensity of a near infrared water line at 10670 cm$^{-1}$: experiment and analysis
Sub-percent accuracy for the intensity of a near infrared water line at 10670 cm$^{-1}$: experiment and analysis Open
Laser measurements of the intensity of (201) 3$_{22}$ -- (000) 2$_{21}$ near-infrared water absorption line at 10670.1 \cm\ are made using three different Herriott cells. These measurements determine the line intensity with an standard dev…
View article: Highly accurate HF dimer <i>ab initio</i> potential energy surface
Highly accurate HF dimer <i>ab initio</i> potential energy surface Open
A highly accurate, (HF)2 potential energy surface (PES) is constructed based on ab initio calculations performed at the coupled-cluster single double triple level of theory with an aug-cc-pVQZ-F12 basis set at about 152 000 points. A highe…
View article: Analysis of the accuracy of calculations using Duo and Level diatomic nuclear motion programs
Analysis of the accuracy of calculations using Duo and Level diatomic nuclear motion programs Open
Analysis of the accuracy of two programs widely-used for computing ro-vibrational spectra of diatomic molecules, namely Duo and Level, is presented. Using model systems for which analytic results are available it is shown that compared to …
View article: The NaOUCMe dataset for 23Na-16O
The NaOUCMe dataset for 23Na-16O Open
The dataset is an archive of ExoMol page, https://exomol.com/data/molecules/NaO/23Na-16O/NaOUCMe/. Please check the reference details according to the following description or directly from the website. NB: The html description skips data …
View article: The NaOUCMe dataset for 23Na-16O
The NaOUCMe dataset for 23Na-16O Open
The dataset is an archive of ExoMol page, https://exomol.com/data/molecules/NaO/23Na-16O/NaOUCMe/. Please check the reference details according to the following description or directly from the website. NB: The html description skips data …
View article: The SiOUVenIR dataset for 28Si-16O
The SiOUVenIR dataset for 28Si-16O Open
The dataset is an archive of ExoMol page, https://exomol.com/data/molecules/SiO/28Si-16O/SiOUVenIR/.Please check the reference details according to the following description or directly from the website. NB: The html description skips data…