Radio Recombination Lines From Photoevaporated Disks Around Massive Stars

Details Radio Recombination Lines From Photoevaporated Disks Around Massive Stars Radio Recombination Lines From Photoevaporated Disks Around Massive Stars

May 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21431005a&link_type=abstract

American Astronomical Society, AAS Meeting #214, #310.05; Bulletin of the American Astronomical Society, Vol. 41, p.746

Astronomy and Astrophysics

Astronomy

Scientific paper

MWC 349 A is an extensively studied ionized region. High angular resolution centimeter continuum observations of MWC 349 A show a bipolar morphology. Broad radio recombination line spectra, characteristic of ultracompact HII regions, have been measured from low angular resolution observations, while spatially resolved radio recombination line observations show a velocity gradient that has been interpreted as an expanding and rotating ionized wind.
From the density and velocity structure of a photoevaporated disk wind we calculate the spectral energy distribution, line spectra and spatially resolved continuum and line maps for this model, in order to compare with observations of MWC 349 A.
This model shows good agreement with both radio continuum and radio recombination line data, giving further evidence of MWC 349 A being the prototypical photoevaporated disk.

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