Very Large Array Observations of Winds from Massive Stars

Details Very Large Array Observations of Winds from Massive Stars Very Large Array Observations of Winds from Massive Stars

2003-10-14

arxiv.org/abs/astro-ph/0310393v1

Astronomy and Astrophysics

Astrophysics

8 pages, 3 figures. Submitted to Revista Mexicana de Astonomia y Astrofisica Oct 10, 2003. Latex file and rmaa.cls file includ

Scientific paper

The classical model for free-free emission from ionized stellar winds is based on the assumption of a stationary, isotropic and homogeneous wind. However, since there exist objects whose wind behaviour deviates from the standard model, during the last decade these assumptions have been questioned. In this work, we present results for 3 bright sources: P Cyg, Cyg OB2 No.12 and WR 147. These objects have been reported to possess winds that deviate from the basic assumptions. We have obtained flux densities, sizes, spectral indices and mass loss rates for each of the targets. These parameters allow us to analyze possible asymmetries, inhomogeneities and time variations in the flux densities. These features confirm the nonclassical behaviour of these winds.

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