Results 1 to 10 of about 19,435 (235)

Elucidation of the Ro-Vibrational Band Structures in the Silicon Tetrafluoride Spectra from Accurate Ab Initio Calculations [PDF]

open access: yesMolecules
We report the construction of comprehensive line lists for the three stable isotopologues of silicon tetrafluoride (28SiF4, 29SiF4, and 30SiF4) using a new effective Hamiltonian and dipole moment model built from accurate ab initio potential energy and ...
Oleg Egorov, Michaël Rey
doaj   +2 more sources

The APOGEE Data Release 16 Spectral Line List [PDF]

open access: yesThe Astronomical Journal, 2021
Abstract The updated H-band spectral-line list (from λ15000–17000) adopted by the Apache Point Observatory Galactic Evolution Experiment (APOGEE) for the SDSS-IV Data Release 16 (DR16) is presented in this work. The APOGEE line list is a combination of atomic and molecular lines, with data drawn from laboratory, theoretical, and ...
Verne V. Smith   +17 more
openaire   +3 more sources

Recommended acetylene 12C2H2 line list in 13.6 µm spectral region: New measurements and global modeling [PDF]

open access: yesJournal of Quantitative Spectroscopy and Radiative Transfer, 2020
Abstract Following a previous work on recommended 12C2H2 line list for the 13 − 248 cm–1 and 390 − 634 cm–1 spectral regions, the present work is dedicated on new measurements between 638 and 820 cm–1. Line intensities have been measured for 18 bands: only four of them were previously reported. The measurements allowed validating predictions based on
Jacquemart, D.   +2 more
openaire   +4 more sources

S-type Stars: Line List for the A2Π–X2Σ+ Band System of LaO

open access: yesThe Astrophysical Journal, 2023
LaO bands are found in the spectra of cool S-type stars. The bands of the A ^2 Π–X ^2 Σ ^+ transition with $v^{\prime} \leqslant 3$ and v ″ ≤ 4 are rotationally analyzed, providing spectroscopic constants for the A ^2 Π state.
P. F. Bernath   +2 more
doaj   +1 more source

THE SDSS-III APOGEE SPECTRAL LINE LIST FOR H -BAND SPECTROSCOPY [PDF]

open access: yesThe Astrophysical Journal Supplement Series, 2015
Accepted to ApJ ...
Shetrone, Matthew   +17 more
openaire   +4 more sources

Wavelengths and Energy Levels of the Upper Levels of Singly Ionized Nickel (Ni ii) from 3d 8(3 F)5f to 3d 8(3 F)9s

open access: yesThe Astrophysical Journal Supplement Series, 2023
Using high-resolution spectra of Ni ii recorded using Fourier transform (FT) spectroscopy of continuous, nickel–helium hollow cathode discharge sources in the region 143–5555 nm (1800–70,000 cm ^−1 , the analysis of 1016 Ni ii lines confirmed and ...
Christian P. Clear   +4 more
doaj   +1 more source

Opacities of S-type Stars: The Singlet B 1Π–X 1Σ+, B 1Π–A 1△, and C 1Σ+–X 1Σ+ Band Systems of ZrO

open access: yesThe Astrophysical Journal, 2023
The ZrO B ^1 Π– X ^1 Σ ^+ , B ^1 Π– A ^1 Δ, and C ^1 Σ ^+ – X ^1 Σ ^+ band systems are important opacity sources in the near-infrared and optical spectra of S-type stars.
Peter F. Bernath   +2 more
doaj   +1 more source

A new list of thorium and argon spectral lines in the visible [PDF]

open access: yesAstronomy & Astrophysics, 2007
7 pages, 6 figures, accepted for publication in A& ...
Lovis, C., Pepe, F.
openaire   +2 more sources

Fantastic Fits with fantasy of Active Galactic Nuclei Spectra: Exploring the Fe ii Emission near the Hα Line

open access: yesThe Astrophysical Journal Supplement Series, 2023
In this study, a refined approach for multicomponent fitting of active galactic nuclei (AGNs) spectra is presented utilizing the newly developed Python code Fully Automated pythoN Tool for AGN Spectra analYsis ( fantasy ).
Dragana Ilić   +2 more
doaj   +1 more source

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