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Polarimetric & Spectropolarimetric Properties of FGK Type Stars and Extrasolar Systems

Published online by Cambridge University Press:  19 September 2017

S. Ortolani ,
F. Tamburini  and
A. Bianchini
S. Ortolani
Affiliation:
† Università di Padova, Dipartimento di Astronomia, Vicolo dell'Osservatorio 2, I-35122 Padova, Italy. emails: bianchini@pd.astro.it, ortolani@pd.astro.it
F. Tamburini
Affiliation:
‡ Institute of Cosmology and Gravitation, Univ. of Portsmouth, PO2 1EG, Portsmouth, UK email: fabrizio.tamburini@port.ac.uk
A. Bianchini
Affiliation:
† Università di Padova, Dipartimento di Astronomia, Vicolo dell'Osservatorio 2, I-35122 Padova, Italy. emails: bianchini@pd.astro.it, ortolani@pd.astro.it

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The study of extra solar planets represents a new exciting frontier for modern astronomy. Most of the results on extrasolar systems are obtained with Doppler surveys. Here we suggest a different approach aimed to study the polarimetric properties of the residual interplanetary dust. Dust can produce observable effects such as infrared emission excess (Beckwith & Sargent 1996; Spangler et al. 2001) and partial polarization of the star light via scattering (Mauron & Dole 1998; Yudin 2000), like in β Pictoris (Voshchinnikov & Krügel 1999). Some polarization could also be produced by a giant planet in a close orbit around the star (Saeger et al. 2000), but the resulting effect is too weak to be responsible for the polarizations actually observed.

Type
Extrasolar Planets
Information
Symposium - International Astronomical Union , Volume 213: Bioastronomy 2002: Life Among the stars , 2004 , pp. 69 - 72
Copyright
Copyright © Astronomical Society of the Pacific 2004 

References

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