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Continuum spectra of collimated, ionized stellar winds
Reynolds, S. P.
AA(National Radio Astronomy Observatory, Charlottesville, VA)
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 304, May 15, 1986, p. 713-720. (ApJ Homepage)
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NASA/STI Keywords:
Astronomical Spectroscopy, Continuous Spectra, Radio Sources (Astronomy), Stellar Winds, Collimation, Gas Jets, Ionized Gases, Optical Thickness, Stellar Mass Ejection
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The behavior of well-collimated ionized flows is studied. The derivation and calculation of the opaque spectral index, collimation distance, mass-loss rate, and radio flux for an unresolved, partially opaque, collimated thermal jet are described. Unresolved sources exhibit partially opaque spectra with spectral indices between 2 and -0.1. The relations for collimation distance and mass-loss rate for jets are examined as a function of observable parameters. Structure in the integrated spectra reveal spatial structure in the source. The applications of the data to isothermal, constant-velocity fully-ionized flows, a jet confined by a power-law density profile in an ambient medium, and continuum sources in NGC 7538 and L 1551 are discussed.

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