The full infrared spectrum of molecular hydrogen

Abstract

The high spectral resolution R about 45,000 provided by IGRINS (Immersion Grating INfrared Spectrometer) at MacDonald Observatory and R 100,000 achieved by CRIRES (CRyogenic high-resolution InfraRed Echelle Spectrograph) at VLT (Very Large Telescope) challenges the present knowledge of infrared spectra. aims We aim to predict the full infrared spectrum of molecular hydrogen at a comparable accuracy. methods We take advantage of the recent theoretical ab initio studies on molecular hydrogen to compute both the electric quadrupole and magnetic dipole transitions taking place within the ground electronic molecular state of hydrogen. results We computed the full infrared spectrum of molecular hydrogen at an unprecedented accuracy and derive for the first time the emission probabilities including both electric quadrupole ($\Delta J=0,\pm$2) and magnetic dipole transitions ($\Delta J=0$) as well as the total radiative lifetime of each rovibrational state. Inclusion of magnetic dipole transitions increases the emission probabilities by factors of a few for highly excited rotational levels, which occur in the 3-20 $\mu$ range}

6 pages, 1 figure, 2 tables. Full Table 2 is only available at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsarc.u-strasbg.fr/viz-bin/cat/J/A+A/630/A58. It can also be obtained on request to [email protected]

References in corpus (4)

• Complete ${\alpha }^{6}m$ corrections to the ground state of H${}_2$
• Nonadiabatic corrections to the wave function and energy
• Three-dimensional Shock Structure of Orion KL Outflow with IGRINS
• Very High Excitation Lines of H${}_2$ in the Orion Molecular Cloud Outflow

Cited by in corpus (38)

• The 2020 release of the ExoMol database: molecular line lists for exoplanet and other hot atmospheres
• Photodissociation and X-Ray Dominated Regions
• The ExoMolOP Database: Cross-sections and k-tables for Molecules of Interest in High-Temperature Exoplanet Atmospheres
• PDRs4All III: JWST's NIR spectroscopic view of the Orion Bar
• Formation of the Methyl Cation by Photochemistry in a Protoplanetary Disk
• Self-consistent Models of Y Dwarf Atmospheres with Water Clouds and Disequilibrium Chemistry
• JWST/MIRI Spectroscopy of the Disk of the Young Eruptive Star EX Lup in Quiescence
• JWST: Deuterated PAHs, PAH-nitriles, and PAH Overtone and Combination Bands I: Program Description and First Look
• The Impending Opacity Challenge in Exoplanet Atmospheric Characterization
• Calculation of Electric Quadrupole Linestrengths for Diatomic Molecules: Application to the H2, CO, HF and O2 Molecules
• A 1.46-2.48 $\mu$m Spectroscopic Atlas of a T6 Dwarf (1060 K) Atmosphere with IGRINS: First Detections of H${}_2$S and H${}_2$, and Verification of H${}_2$O, CH${}_4$, and NH${}_3$ Line Lists
• Low-Temperature Gas Opacities with AESOPUS 2.0
• A Near-infrared Survey of UV-excited Molecular Hydrogen in Photodissociation Regions
• Data availability and requirements relevant for the Ariel space mission and other exoplanet atmosphere applications
• The Mantis Network II: Examining the 3D high-resolution observable properties of the UHJs WASP-121b and WASP-189b through GCM modelling
• The NewEra model grid
• Observations and analysis of CH${}^{+}$ vibrational emissions from the young, carbon-rich planetary nebula NGC 7027: a textbook example of chemical pumping
• Conditions for radiative zones in the molecular hydrogen envelope of Jupiter and Saturn: The role of alkali metals
• A rich molecular chemistry in the gas of the IC 348 star cluster of the Perseus Molecular Cloud
• The first detection of cosmic-ray excited H${}_2$ in interstellar space
• Photoevaporation Can Reproduce Extended ${\mathrm{H}}_2$ Emission from Protoplanetary Disks Imaged by JWST MIRI
• JWST Discovery of a Very Fast Biconical Outflow of Warm Molecular Gas in the Nearby Ultra-Luminous Infrared Galaxy F08572+3915 NW
• Multiple gas phases in supernova remnant IC 443: mapping shocked H${}_2$ with VLT/KMOS
• Three-component modelling of O-rich AGB star winds I. Effects of drift using forsterite
• Outflowing shocked gas dominates the NIR H${}_2$ emission from the dual AGN NGC6240
• High spectral resolution observations of Uranus' near-IR thermospheric $H_2$ emission spectrum using the IGRINS spectrograph during the 2018 and 2023 apparition
• Shocked, Heated, and Now Resolved: H${}_2$ excitation in the low-luminosity AGN at M58 core with JWST
• Distortion of the CMB spectrum by the first molecules of the Dark Ages
• Near the Runaway: The Climate and Habitability of Teegarden's Star b
• ReveaLLAGN 1: JWST Emission-Line Spectra Reveal Low-Luminosity AGN with UV-Deficient SEDs and Warm Molecular Gas
• The quasi bound spectrum of H2
• Absorption spectra of electrified hydrogen molecules
• Infrared Spectroscopy of Nearby Radio Active Early-Type Galaxies -- II: Spectral Atlas
• A Large-scale Approach to Modelling Molecular Biosignatures: The Diatomics
• Nonadiabatic corrections to electric quadrupole transition rates in H${}_2$
• Numerical model of fast electron energy deposition in interstellar molecular gas
• NIR spectroscopic survey of protostellar jets in the star forming region IC 1396N
• Global Signals of the First Molecules from the Dark Ages in the Presence of Primordial Magnetic Fields