Molecular Hydrogen Emission from Protoplanetary Disks

Details Molecular Hydrogen Emission from Protoplanetary Disks Molecular Hydrogen Emission from Protoplanetary Disks

2005-05-06

arxiv.org/abs/astro-ph/0505126v1

Astronomy and Astrophysics

Astrophysics

19 pages, accepted for publication in Astronomy and Astrophysics

Scientific paper

10.1051/0004-6361:20052809

We have modeled self-consistently the density and temperature profiles of gas and dust in protoplanetary disks, taking into account irradiation from a central star. Making use of this physical structure, we have calculated the level populations of molecular hydrogen and the line emission from the disks. As a result, we can reproduce the observed strong line spectra of molecular hydrogen from protoplanetary disks, both in the ultraviolet (UV) and the near-infrared, but only if the central star has a strong UV excess radiation.

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