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Understanding structure in line-driven stellar winds using ultraviolet spectropolarimetry in the time domain

Nazé, Yaël; Ignace, Richard; Scowen, Paul A. +13 more

The most massive stars are thought to lose a significant fraction of their mass in a steady wind during the main-sequence and blue supergiant phases. This in turn sets the stage for their further evolution and eventual supernova, and preconditions the surrounding medium for all following events, with consequences for ISM energization, chemical enr…

Ultraviolet spectropolarimetry with Polstar: using Polstar to test magnetospheric mass-loss quenching

Cheung, M. C. M.; Wade, G. A.; Nazé, Y. +17 more

Polstar is a proposed NASA MIDEX space telescope that will provide high-resolution, simultaneous full-Stokes spectropolarimetry in the far ultraviolet, together with low-resolution linear polarimetry in the near ultraviolet. This observatory offers unprecedented capabilities to obtain unique information on the magnetic and plasma properties of the…