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The effects of stellar winds and magnetic fields on exoplanets

Published online by Cambridge University Press:  07 August 2014

A. A. Vidotto
A. A. Vidotto*
Affiliation:
SUPA, University of St Andrews, North Haugh, KY16 9SS, UK email: [email protected]
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Abstract

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The great majority of exoplanets discovered so far are orbiting cool, low-mass stars whose properties are relatively similar to the Sun. However, the stellar magnetism of these stars can be significantly different from the solar one, both in topology and intensity. In addition, due to the present-day technology used in exoplanetary searches, most of the currently known exoplanets are found orbiting at extremely close distances to their host stars (< 0.1 au). The dramatic differences in stellar magnetism and orbital radius can make the interplanetary medium of exoplanetary systems remarkably distinct from that of the Solar System. To constrain interactions between exoplanets and their host-star's magnetised winds and to characterise the interplanetary medium that surrounds exoplanets, more realistic stellar wind models, which account for factors such as stellar rotation and the complex stellar magnetic field configurations of cool stars, must be employed. Here, I briefly review the latest progress made in data-driven modelling of magnetised stellar winds. I also show that the interaction of the stellar winds with exoplanets can lead to several observable signatures, some of which that are absent in our own Solar System.

Keywords

MHDstars: magnetic fieldsstars: mass lossstars: planetary systemsstars: rotationstars: windsoutflows
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 9 , Symposium S302: Magnetic Fields throughout Stellar Evolution , August 2013 , pp. 228 - 236
Copyright
Copyright © International Astronomical Union 2014 

References

Bouvier, J., Forestini, M., & Allain, S., 1997, A&A 326, 1023Google Scholar
Catala, C., Donati, J.-F., Shkolnik, E., Bohlender, D., & Alecian, E., 2007, MNRAS 374, L42Google Scholar
Cranmer, S. R., 2008, ApJ 689, 316CrossRefGoogle Scholar
Cranmer, S. R. & Saar, S. H., 2011, ApJ 741, 54CrossRefGoogle Scholar
Donati, J. & Landstreet, J. D., 2009, ARA&A 47, 333Google Scholar
Donati, J., Morin, J., Petit, P., Delfosse, X., Forveille, T., Aurière, M., Cabanac, R., Dintrans, B., Fares, R., Gastine, T., Jardine, M. M., Lignières, F., Paletou, F., Velez, J. C. R., & Théado, S., 2008a, MNRAS 390, 545Google Scholar
Donati, J.-F. & Brown, S. F., 1997, A&A 326, 1135Google Scholar
Donati, J.-F., Moutou, C., Farès, R., Bohlender, D., Catala, C., Deleuil, M., Shkolnik, E., Collier Cameron, A., Jardine, M. M., & Walker, G. A. H., 2008b, MNRAS 385, 1179CrossRefGoogle Scholar
Falceta-Gonçalves, D., Vidotto, A. A. & Jatenco-Pereira, V., 2006, MNRAS 368, 1145Google Scholar
Fares, R., Donati, J., Moutou, C., Bohlender, D., Catala, C., Deleuil, M., Shkolnik, E., Cameron, A. C., Jardine, M. M., & Walker, G. A. H., 2009, MNRAS 398, 1383Google Scholar
Fares, R., Moutou, C., Donati, J.-F., Catala, C., Shkolnik, E., Jardine, M., Cameron, A., & Deleuil, M., 2013, MNRAS in press (arXiv:1307.6091)Google Scholar
Fossati, L., Bagnulo, S., Elmasli, A., Haswell, C. A., Holmes, S., Kochukhov, O., Shkolnik, E. L., Shulyak, D. V., Bohlender, D., Albayrak, B., Froning, C., & Hebb, L., 2010a, ApJ 720, 872Google Scholar
Fossati, L., Haswell, C. A., Froning, C. S., Hebb, L., Holmes, S., Kolb, U., Helling, C., Carter, A., Wheatley, P., Cameron, A. C., Loeillet, B., Pollacco, D., Street, R., Stempels, H. C., Simpson, E., Udry, S., Joshi, Y. C., West, R. G., Skillen, I., & Wilson, D., 2010b, ApJ 714, L222Google Scholar
Guedel, M., 2004, A&A Rev. 12, 71Google Scholar
Hartmann, L. & MacGregor, K. B., 1980, ApJ 242, 260Google Scholar
Hollweg, J. V., 1973, ApJ 181, 547CrossRefGoogle Scholar
Holzer, T. E., Fla, T., & Leer, E., 1983, ApJ 275, 808Google Scholar
Jardine, M., Vidotto, A. A., van Ballegooijen, A., Donati, J.-F., Morin, J., Fares, R., & Gombosi, T. I., 2013, MNRAS 431, 528Google Scholar
Jatenco-Pereira, V. & Opher, R., 1989, A&A 209, 327Google Scholar
Jones, G. H., Balogh, A., & Forsyth, R. J., 1998, Geophys. Res. Lett. 25, 3109Google Scholar
Keppens, R. & Goedbloed, J. P., 2000, ApJ 530, 1036Google Scholar
Lai, D., Helling, C., & van den Heuvel, E. P. J., 2010, ApJ 721, 923Google Scholar
Lazio, T. J. W., Carmichael, S., Clark, J., Elkins, E., Gudmundsen, P., Mott, Z., Szwajkowski, M., & Hennig, L. A., 2010, AJ 139, 96CrossRefGoogle Scholar
Lecavelier des Etangs, A., Sirothia, S. K., & Gopal-Krishna, , and Zarka, P., 2013, A&A 552, A65Google Scholar
Lim, J. & White, S. M., 1996, ApJ 462, L91CrossRefGoogle Scholar
Lima, J. J. G., Priest, E. R., & Tsinganos, K., 2001, A&A 371, 240Google Scholar
Llama, J., Vidotto, A. A., Jardine, M., Wood, K., Fares, R., & Gombosi, T. I., 2013, MNRAS, in press (arXiv: 1309.2938)Google Scholar
Llama, J., Wood, K., Jardine, M., Vidotto, A. A., Helling, C., Fossati, L., & Haswell, C. A., 2011, MNRAS 416, L41Google Scholar
McComas, D. J., Barraclough, B. L., Gosling, J. T., Hammond, C. M., Phillips, J. L., Neugebauer, M., Balogh, A., & Forsyth, R. J., 1995, J. Geophys. Res. 100, 19893CrossRefGoogle Scholar
McComas, D. J., Ebert, R. W., Elliott, H. A., Goldstein, B. E., Gosling, J. T., Schwadron, N. A., & Skoug, R. M., 2008, Geophys. Res. Lett. 35, 18103Google Scholar
Mestel, L., 1968, MNRAS 138, 359Google Scholar
Morin, J., Donati, J., Petit, P., Delfosse, X., Forveille, T., Albert, L., Aurière, M., Cabanac, R., Dintrans, B., Fares, R., Gastine, T., Jardine, M. M., Lignières, F., Paletou, F., Ramirez Velez, J. C., & Théado, S., 2008, MNRAS 390, 567Google Scholar
Parker, E. N., 1958, ApJ 128, 664CrossRefGoogle Scholar
Petit, P., Dintrans, B., Solanki, S. K., Donati, J.-F., Aurière, M., Lignières, F., Morin, J., Paletou, F., Ramirez Velez, J., Catala, C., & Fares, R., 2008, MNRAS 388, 80Google Scholar
Pinto, R. F., Brun, A. S., Jouve, L., & Grappin, R., 2011, ApJ 737, 72Google Scholar
Pneuman, G. W. & Kopp, R. A., 1971, Sol. Phys. 18, 258Google Scholar
Smith, A. M. S., Collier Cameron, A., Greaves, J., Jardine, M., Langston, G., & Backer, D., 2009, MNRAS 395, 335Google Scholar
Suess, S. T. & Smith, E. J., 1996, Geophys. Res. Lett. 23, 3267Google Scholar
Suzuki, T. K., Imada, S., Kataoka, R., Kato, Y., Matsumoto, T., Miyahara, H., & Tsuneta, S., 2012, PASJ in press (arXiv:1212.6713)Google Scholar
Tsinganos, K. & Low, B. C., 1989, ApJ 342, 1028Google Scholar
Vidotto, A., 2013, Astronomy and Geophysics 54 (1), 010001CrossRefGoogle Scholar
Vidotto, A. A., Fares, R., Jardine, M., Donati, J.-F., Opher, M., Moutou, C., Catala, C., & Gombosi, T. I., 2012, MNRAS 423, 3285CrossRefGoogle Scholar
Vidotto, A. A., Jardine, M., & Helling, C., 2010a, ApJ 722, L168CrossRefGoogle Scholar
Vidotto, A. A., Jardine, M., & Helling, C., 2011a, MNRAS 411, L46CrossRefGoogle Scholar
Vidotto, A. A., Jardine, M., & Helling, C., 2011b, MNRAS 414, 1573Google Scholar
Vidotto, A. A. & Jatenco-Pereira, V., 2006, ApJ 639, 416Google Scholar
Vidotto, A. A., Opher, M., Jatenco-Pereira, V., & Gombosi, T. I., 2009a, ApJ 703, 1734Google Scholar
Vidotto, A. A., Opher, M., Jatenco-Pereira, V., & Gombosi, T. I., 2009b, ApJ 699, 441CrossRefGoogle Scholar
Vidotto, A. A., Opher, M., Jatenco-Pereira, V., & Gombosi, T. I., 2010b, ApJ 720, 1262Google Scholar
Wargelin, B. J. & Drake, J. J., 2002, ApJ 578, 503Google Scholar
Washimi, H. & Shibata, S., 1993, MNRAS 262, 936Google Scholar
Wilhelm, K., 2006, A&A 455, 697Google Scholar
Wood, B. E., Linsky, J. L., Müller, H., & Zank, G. P., 2001, ApJ 547, L49Google Scholar
Zarka, P., 2007, Planet. Space Sci. 55, 598Google Scholar