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Can we predict the magnetic properties of PMS stars from their H-R diagram location?

Published online by Cambridge University Press:  07 August 2014

S. G. Gregory ,
J.-F. Donati ,
J. Morin ,
G. A. J. Hussain ,
N. J. Mayne ,
L. A. Hillenbrand  and
M. Jardine
S. G. Gregory
Affiliation:
School of Physics & Astronomy, University of St Andrews, St Andrews, KY16 9SS, U.K. email: [email protected]
J.-F. Donati
Affiliation:
UPS-Toulouse/CNRS-INSU, IRAP UMR 5277, Toulouse, F31400France
J. Morin
Affiliation:
Inst. für Astrophysik, Univ. Göttingen, Friedrich-Hund-Platz 1, D-37077 Göttingen, Germany
G. A. J. Hussain
Affiliation:
ESO, Karl-Schwarzschild-Str. 2, D-85748 Garching, Germany
N. J. Mayne
Affiliation:
School of Physics, University of Exeter, Exeter EX4 4QL, U.K.
L. A. Hillenbrand
Affiliation:
California Institute of Technology, MC 249-17, Pasadena, CA 91125, U.S.A.
M. Jardine
Affiliation:
School of Physics & Astronomy, University of St Andrews, St Andrews, KY16 9SS, U.K. email: [email protected]
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Abstract

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Spectropolarimetric observations combined with tomographic imaging techniques have revealed that all pre-main sequence (PMS) stars host multipolar magnetic fields, ranging from strong and globally axisymmetric with ≳kilo-Gauss dipole components, to complex and non-axisymmetric with weak dipole components (≲0.1 kG). Many host dominantly octupolar large-scale fields. We argue that the large-scale magnetic properties of a PMS star are related to its location in the Hertzsprung-Russell diagram. This conference paper is a synopsis of Gregory et al. (2012), updated to include the latest results from magnetic mapping studies of PMS stars.

Keywords

stars: evolutionstars: interiorsstars: magnetic fieldstars: pre-main sequence
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 9 , Symposium S302: Magnetic Fields throughout Stellar Evolution , August 2013 , pp. 40 - 43
Copyright
Copyright © International Astronomical Union 2014 

References

Basri, G., Marcy, G. W., & Valenti, J. A. 1992, ApJ, 390, 622Google Scholar
Donati, J.-F., Gregory, S. G., Alencar, S. H. P., et al. 2013, MNRAS, in press [astro-ph/1308.5143]Google Scholar
Donati, J.-F., Gregory, S. G., Alencar, S. H. P., et al. 2012, MNRAS, 425, 2948Google Scholar
Donati, J.-F., Gregory, S. G., Alencar, S. H. P., et al. 2011c, MNRAS, 417, 472Google Scholar
Donati, J.-F., Gregory, S. G., Montmerle, T., et al. 2011b, MNRAS, 417, 1747Google Scholar
Donati, J.-F., Bouvier, J., Walter, F. M., et al. 2011a, MNRAS, 412, 2454Google Scholar
Donati, J.-F., Skelly, M. B., Bouvier, J., et al. 2010b, MNRAS, 409, 1347CrossRefGoogle Scholar
Donati, J.-F., Skelly, M. B., Bouvier, J., et al. 2010a, MNRAS, 402, 1426Google Scholar
Donati, J.-F., Jardine, M. M., Gregory, S. G., et al. 2008b, MNRAS, 386, 1234Google Scholar
Donati, J.-F., Morin, J., Petit, P., et al. 2008a, MNRAS, 390, 545CrossRefGoogle Scholar
Donati, J.-F., Jardine, M. M., Gregory, S. G., et al. 2007, MNRAS, 380, 1297CrossRefGoogle Scholar
Donati, J.-F., Semel, M., Carter, B. D., Rees, D. E., & Cameron, A. C. 1997, MNRAS, 291, 658CrossRefGoogle Scholar
Gregory, S. G., Donati, J.-F., Morin, J., et al. 2012, ApJ, 755, 97CrossRefGoogle Scholar
Gregory, S. G. & Donati, J.-F. 2011, AN, 332, 1027Google Scholar
Hussain, G. A. J., Collier Cameron, A., Jardine, M. M., et al. 2009, MNRAS, 398, 189Google Scholar
Johns-Krull, C. M. 2007, ApJ, 664, 975Google Scholar
Johns-Krull, C. M., Valenti, J. A., & Koresko, C. 1999, ApJ, 516, 900Google Scholar
Königl, A. 1991, ApJL, 370, L39Google Scholar
Morin, J., Dormy, E., Schrinner, M., & Donati, J.-F. 2011, MNRAS, 418, L133Google Scholar
Morin, J., Donati, J.-F., Petit, P., et al. 2008, MNRAS, 390, 567Google Scholar
Siess, L., Dufour, E., & Forestini, M. 2000, A&A, 358, 593Google Scholar
Yang, H. & Johns-Krull, C. M. 2011, ApJ, 729, 83Google Scholar