Results 11 to 20 of about 5,361,465 (264)

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
core   +7 more sources

Spectral line lists of a nitrogen gas discharge for wavelength calibration in the range 4500–11 000 cm-1 [PDF]

open access: yesAstronomy & Astrophysics, 2015
A discharge of nitrogen gas, as created in a microwave-induced plasma, exhibits a very dense molecular emission line spectrum. Emission spectra of this kind could serve as wavelength calibrators for high-resolution astrophysical spectrographs in the near-infrared, where only very few calibration sources are currently available.
A. Boesch, A. Reiners
openaire   +4 more sources

Spectral Domain Low- Coherence Interferometry for On-line Surface Inspection [PDF]

open access: yes, 2013
We present an on-line surface measurement technique based on spectral domain low-coherence interferometry (SD-LCI), which can obtain a one dimensional surface profile with just one shot.
Gao, F., Jiang, Xiang, Tang, Dawei
core   +4 more sources

Spectral Line Depth Variability in Radial Velocity Spectra [PDF]

open access: yes, 2022
Stellar active regions, including spots and faculae, can create radial velocity (RV) signals that interfere with the detection and mass measurements of low mass exoplanets.
Plavchan, Peter   +10 more
core   +1 more source

Theoretical hot methane line lists up to T=2000 K for astrophysical applications [PDF]

open access: yes, 2020
The paper describes the construction of complete sets of hot methane lines based on accurate ab initio potential and dipole moment surfaces and extensive first-principle calculations.
Rey, Michaël   +2 more
core   +2 more sources

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

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

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

An upper limit for water dimer absorption in the 750 nm spectral region and a revised water line list [PDF]

open access: yesAtmospheric Chemistry and Physics, 2010
Abstract. Absorption of solar radiation by water dimer molecules in the Earth's atmosphere has the potential to act as a positive feedback effect for climate change. There seems little doubt from the results of previous laboratory and theoretical studies that significant concentrations of the water dimer should be present in the atmosphere, yet ...
Shillings, A.J.L.   +4 more
openaire   +4 more sources

Revisiting ϵ Eridani with NEID: Identifying New Activity-sensitive Lines in a Young K Dwarf Star

open access: yesThe Astronomical Journal, 2023
Recent improvements in the sensitivity and precision of the radial velocity (RV) method for exoplanets have brought it close, but not quite to, the threshold (∼10 cm s ^−1 ) required to detect Earth-mass and other potentially habitable planets around Sun-
Sarah Jiang   +9 more
doaj   +1 more source

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