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}

arXiv comment6 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 (13)

• Nonadiabatic corrections to rovibrational levels of H${}_2$
• Born-Oppenheimer potential for H${}_2$
• Higher-order effective Hamiltonian for light atomic systems
• Complete ${\alpha }^{6}m$ corrections to the ground state of H${}_2$
• Nonadiabatic corrections to the wave function and energy
• Relativistic corrections for the ground electronic state of molecular hydrogen
• Nonadiabatic relativistic correction in H${}_2$, D${}_2$, and HD
• Nonadiabatic rotational states of the hydrogen molecule
• Excitation of Molecular Hydrogen in the Orion Bar Photodissociation Region From a Deep Near-Infrared IGRINS Spectrum
• Fluorescent H_2 Emission Lines from the Reflection Nebula NGC 7023 Observed with IGRINS
• Three-dimensional Shock Structure of Orion KL Outflow with IGRINS
• Highly Excited H2 in Herbig-Haro 7: Formation Pumping in Shocked Molecular Gas?
• Very High Excitation Lines of H${}_2$ in the Orion Molecular Cloud Outflow

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