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Mass-loss of hot stars studied with spectro-polarimetric interferometry (SPIN)

Chesneau, O. and Wolff, S. and Rousselet-Perraut, K. and Mourard, D. and Stehle, C. and Vakili, F. (2003) Mass-loss of hot stars studied with spectro-polarimetric interferometry (SPIN). In: Polarimetry in Astronomy. Proceedings of SPIE. No.4843. Society of Photo-optical Instrumentation Engineers (SPIE) , Bellingham, WA, pp. 484-491. ISBN 9780819446220.

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We describe the prospective work undertaken on an interferometric technique using polarimetry called SPIN (Spectro-Polarimetric INterferometry). The polarizing phenomena described in this work have to be taken into account by any stellar interferometer in order to control the fringe signal. Adding a polarimetric device at their combined focus represents no technical difficulty. The use of SPIN can extend interferometry by an important complementary tool for locating and quantizing the mass loss from early type stars since these stars are subject to strong Thomson scattering in their vicinity. As an illustration of the potential of SPIN, we present the results of Monte-Carlo simulations showing the expected signal for realistic hot star environment. Radiative winds ranging from A supergiants to earliest O stars are considered. In particular, the results show the strong expected signal from spherical winds for which no detection of polarization is achievable by classical technics.

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Additional Information:© 2003 Society of Photo-Optical Instrumentation Engineers (SPIE). The authors thanks J.P. Aufdenberg for having provided a numerical detailed model of Deneb. O.C. is grateful to the "Max-Planck Institut für Astronomie" for a postdoctoral grant. S.W. acknowledges financial supported through the NASA grant NAG5-11645, and through the grant DP.10633 (project 101555).
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Max Planck Institute for Astronomy (MPIA)UNSPECIFIED
Subject Keywords:Polarimetry, long baseline interferometry, hot stars
Series Name:Proceedings of SPIE
Issue or Number:4843
Record Number:CaltechAUTHORS:20181213-143635171
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Official Citation:Olivier Chesneau, S. Wolf, Karine Rousselet-Perraut, Denis Mourard, Chantal Stehle, Farrokh Vakili, "Mass-loss of hot stars studied with spectropolarimetric interferometry (SPIN)," Proc. SPIE 4843, Polarimetry in Astronomy, (14 February 2003); doi: 10.1117/12.458618
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:91836
Deposited By: George Porter
Deposited On:13 Dec 2018 22:56
Last Modified:16 Nov 2021 03:44

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