Winds of planet hosting stars
Paper
Paper/Presentation Title | Winds of planet hosting stars |
---|---|
Presentation Type | Paper |
Authors | Nicholson, B. A. (Author), Mengel, M. W. (Author), Brookshaw, L. (Author), Vidotto, A. A. (Author), Carter, B. D. (Author), Marsden, S. C. (Author), Soutter, J. (Author), Waite, I. A. (Author) and Horner, J. (Author) |
Editors | Short, Wayne and Cairns, Iver |
Journal or Proceedings Title | Proceedings of the 14th Australian Space Research Conference (ASRC 2014) |
Number of Pages | 8 |
Year | 2015 |
Place of Publication | Sydney, Australia |
ISBN | 9780977574087 |
Web Address (URL) of Paper | http://www.nssa.com.au/14asrc/ |
Conference/Event | 14th Australian Space Research Conference (ASRC 2014) |
Event Details | 14th Australian Space Research Conference (ASRC 2014) Parent Australian Space Science Conference (ASSC) Delivery In person Event Date 29 Sep 2014 to end of 01 Oct 2014 Event Location Adelaide, Australia |
Abstract | The field of exoplanetary science is one of the most rapidly growing areas of astrophysical research. As more planets are discovered around other stars, new techniques have been developed that have allowed astronomers to begin to characterise them. Two of the most important factors in understanding the evolution of these planets, and potentially determining whether they are habitable, are the behaviour of the winds of the host star and the way in which they interact with the planet. The purpose of this project is to reconstruct the magnetic fields of planet hosting stars from spectropolarimetric observations, and to use these magnetic field maps to inform simulations of the stellar winds in those systems using the Block Adaptive Tree Solar-wind Roe Upwind Scheme (BATS-R-US) code. The BATS-RUS code was originally written to investigate the behaviour of the Solar wind, and so has been altered to be used in the context of other stellar systems. These simulations will give information about the velocity, pressure and density of the wind outward from the host star. They will also allow us to determine what influence the winds will have on the space weather environment of the planet. This paper presents the preliminary results of these simulations for the star τ Bootis, using a newly reconstructed magnetic field map based on previously ¨ published observations. These simulations show interesting structures in the wind velocity around the star, consistent with the complex topology of its magnetic field. |
Keywords | stellar winds; stellar magnetic fields; stellar evolution; planetary evolution; habitability; astrobiology |
ANZSRC Field of Research 2020 | 510109. Stellar astronomy and planetary systems |
Public Notes | Copyright © 2015 National Space Society of Australia Ltd. |
Byline Affiliations | Computational Engineering and Science Research Centre |
University of Geneva, Switzerland | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q3499/winds-of-planet-hosting-stars
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