Determining the Velocity and Density Structure of Circumstellar Envelopes by Spectropolarimetry

Details Determining the Velocity and Density Structure of Circumstellar Envelopes by Spectropolarimetry Determining the Velocity and Density Structure of Circumstellar Envelopes by Spectropolarimetry

May 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995aas...186.2017w&link_type=abstract

American Astronomical Society, 186th AAS Meeting, #20.17; Bulletin of the American Astronomical Society, Vol. 27, p.837

Astronomy and Astrophysics

Astronomy

Scientific paper

We present theoretical continuum polarisation and spectropolarimetric line profiles calculated using a Monte Carlo computer code. The continuum polarisation provides information on the density structure of the envelope and the variations in the degree of polarisation and position angle with wavelength across spectral lines are signatures of line formation and scattering in a moving envelope. Analysis of such polarimetric line profile variations places constraints on the velocity of the circumstellar region and the location of the line forming regions. Analysing line effects in conjunction with continuum polarimetric variability (both temporal and spectral) provides a powerful diagnostic tool in determining the structure of circumstellar environments. We apply our results to data collected by the Wisconsin Ultraviolet Photopolarimeter Experiment (WUPPE) and the Pine Bluff Observatory (PBO) in Wisconsin. Provisional WUPPE data on Novae show evidence for polarimetric line effects, while PBO data on hot stars, in particular P-Cyg and Zeta-Tau, show the signatures of rotating and expanding circumstellar geometries.

Affiliated with

Also associated with

No associations

Rating

Determining the Velocity and Density Structure of Circumstellar Envelopes by Spectropolarimetry does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Determining the Velocity and Density Structure of Circumstellar Envelopes by Spectropolarimetry, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Determining the Velocity and Density Structure of Circumstellar Envelopes by Spectropolarimetry will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1057280