Molecular Hydrogen as a probe of physical conditions in high red-shift Damped Lyα Absorbers

Details Molecular Hydrogen as a probe of physical conditions in high red-shift Damped Lyα Absorbers Molecular Hydrogen as a probe of physical conditions in high red-shift Damped Lyα Absorbers

Dec 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aas...20311303s&link_type=abstract

American Astronomical Society Meeting 203, #113.03; Bulletin of the American Astronomical Society, Vol. 35, p.1389

Astronomy and Astrophysics

Astrophysics

Scientific paper

Molecular Hydrogen plays an important role in astrophysics. It is the first and the most abundant neutral molecule to be formed in the Universe. We consider a complete model of the H2 molecule that we have implemented in the spectra simulation code Cloudy. The H2 molecule has 1893 levels which produces tens of thousand lines. We consider all physical processes, including ionization, heating, cooling, molecule formation, and grain physics, simultaneously and self-consistently, extending from the H II region through the PDR and molecular cloud. We present column density diagnostic diagrams that allow the physical conditions in high red-shift DLAs to be determined.

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