The radio spectrum and physical parameters of the W80 H II complex

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Astronomical Maps, Nebulae, Radiant Flux Density, Radio Spectra, Astronomical Spectroscopy, B Stars, Main Sequence Stars, O Stars, Wavelengths

Scientific paper

The radio continuum spectrum of the W80 nebular complex (NGC 7000 and IC 5070 nebulae, mainly) is established over a wide range of frequencies. The resultant spectrum shows a thermal shape; the spectral index established for the optically thin part of it is -0.04. Certain physical parameters of the complex (RMS densities, mass, emission measure, excitation parameter) are derived for adopted models. The possible exciting star is located. Limitations of the models involved and uncertainties of the results are also discussed.

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