Contents of: VI/111/./abstract/JCASSINE_WR_VLAW.abs

The following document lists the file abstract/JCASSINE_WR_VLAW.abs from catalogue VI/111.
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==> In this proposal, more time is being requested for JCASSINE.WR_VELOC
==> This proposal requests an upgrade from Priority 3 for JCASSINE.WR_VELOC
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A method for deriving the wind velocity law from multiline IR spectral
observations is described.  The technique utilizes the fact that for dense
stellar winds, the continuum will be formed in the wind itself, and the radial
distance of the free-free continuum formation becomes larger with increasing
wavelength.  The observed line emission from the wind occurs mostly exterior
to the continuum, hence as the continuum marches through the wind as a
function of wavelength, the different lines will probe different regions of
the wind acceleration.  Thus, the line width is expected to grow with
wavelength, a result that can be used to derive the velocity law of the wind.
We propose to apply this theory to derive the velocity distribution in
Wolf-Rayet (WR) winds.  Preliminary ISO spectral observations of the WR star,
WR134 are presented and used as a guide for the observations proposed here.
In particular, we desire IR spectral line observations of at least one more
nitrogen-rich WR star and a carbon-rich WR star to determine if the wind
velocity distribution varies with stellar evolution.  Thus, we request that
(1) WR136 and WR1 of the original proposal be elevated above priority 3, but
using our new list, (2) WR111, a carbon-rich star, be added as a target, and
(3) lines not among our original list but present in our new list be observed
in WR134, that was successfully observed in our original proposal.