Imaging polarimetry with the very large telescope: recent results on field brown dwarfs

Details Imaging polarimetry with the very large telescope: recent results on field brown dwarfs Imaging polarimetry with the very large telescope: recent results on field brown dwarfs

Feb 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003spie.4843..164m&link_type=abstract

Polarimetry in Astronomy. Edited by Silvano Fineschi . Proceedings of the SPIE, Volume 4843, pp. 164-169 (2003).

Astronomy and Astrophysics

Astronomy

Scientific paper

We present optical linear polarimetry of 9 ultra cool field dwarfs. The linear polarisation of each L dwarf we measured is less than 0.2 percent. Three dwarfs have polarisations compatible with zero, two are marginal detections, and three have significant polarisation. Due to their small distance, an insterstellar origin for the detected polarisation can be safely ruled out. Our detections confirm that dust is present in the atmosphere of these L dwarfs and that the scattering geometry is not symmetric.

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