EDP Sciences
Free access
Volume 394, Number 2, November I 2002
Page(s) 675 - 678
Section Formation and evolution of planetary systems
DOI http://dx.doi.org/10.1051/0004-6361:20021151

A&A 394, 675-678 (2002)
DOI: 10.1051/0004-6361:20021151

Polarization statistics of extra-solar systems

F. Tamburini1, S. Ortolani2 and A. Bianchini2

1  Institute of Cosmology and Gravitation, Univ. of Portsmouth, PO2 1EG, Portsmouth, UK
    e-mail: fabrizio.tamburini@port.ac.uk
2  Università di Padova, Dipartimento di Astronomia, Vicolo dell'Osservatorio 2, 35122 Padova, Italy emails: bianchini@pd.astro.it, ortolani@pd.astro.it

(Received 22 April 2002 / Accepted 27 July 2002)

We have analysed the optical polarimetric properties of nearby intermediate-late type MS stars and examined in some detail the pecularities displayed by those known to have planets. We find that i) the polarization degree is not strictly correlated with the presence of planets; ii) there is a lack of high eccentricity planets at high optical linear polarization levels; iii) no clear correlation is seen between metallicity and polarization amongst extra-solar systems; iv) the contribution to the polarization by the interstellar medium seems to become effective only after ~70 pc.

Key words: stars: planetary systems: protoplanetary disks -- polarization

Offprint request: A. Bianchini, bianchini@pd.astro.it

© ESO 2002