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- Title
Ultraviolet spectropolarimetry with Polstar: using Polstar to test magnetospheric mass-loss quenching.
- Authors
Shultz, M. E.; Casini, R.; Cheung, M. C. M.; David-Uraz, A.; del Pino Alemán, T.; Erba, C.; Folsom, C. P.; Gayley, K.; Ignace, R.; Keszthelyi, Z.; Kochukhov, O.; Nazé, Y.; Neiner, C.; Oksala, M.; Petit, V.; Scowen, P. A.; Sudnik, N.; ud-Doula, A.; Vink, J. S.; Wade, G. A.
- Abstract
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 magnetospheres of hot stars. We describe an observing program making use of the known population of magnetic hot stars to test the fundamental hypothesis that magnetospheres should act to rapidly drain angular momentum, thereby spinning the star down, whilst simultaneously reducing the net mass-loss rate. Both effects are expected to lead to dramatic differences in the evolution of magnetic vs. non-magnetic stars.
- Subjects
UNITED States. National Aeronautics &; Space Administration; SPACE telescopes; EARLY stars; ANGULAR momentum (Mechanics); POLARIMETRY; CIRCUMSTELLAR matter; STELLAR rotation; STELLAR magnetic fields
- Publication
Astrophysics & Space Science, 2022, Vol 367, Issue 12, p1
- ISSN
0004-640X
- Publication type
Article
- DOI
10.1007/s10509-022-04113-x