Optical polarimetry and photometry of young sun-like star LO Peg

Details Optical polarimetry and photometry of young sun-like star LO Peg Optical polarimetry and photometry of young sun-like star LO Peg

Aug 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011iaus..273..455p&link_type=abstract

The Physics of Sun and Star Spots, Proceedings of the International Astronomical Union, IAU Symposium, Volume 273, p. 455-459

Physics

Stars: Activity, Stars: Late-Type, Stars: Spots, Techniques: Photometric, Techniques: Polarimetric

Scientific paper

We have carried out the B,V and R-band polarimetric and V-band photometric study of the star LO Peg. Our analysis reveal that LO Peg is highly polarized among the sun-like stars. The degree of polarization and polarization position angle are found to be rotationally modulated. The levels of polarization observed in LO Peg could be the result of scattering of an anisotropic stellar radiation field by an optically thin circumstellar envelope or scattering of the stellar radiation by prominence-like structures. The long term photometric observations of LO Peg indicate three independent groups of spots are present on the surface of LO Peg.

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