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Proceedings Paper

Imaging polarimetry with the Very Large Telescope: recent results on field brown dwarfs
Author(s): Francois Menard; Xavier Delfosse; Jean-Louis Monin; Nicholas Peretto
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Paper Abstract

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.

Paper Details

Date Published: 14 February 2003
PDF: 6 pages
Proc. SPIE 4843, Polarimetry in Astronomy, (14 February 2003); doi: 10.1117/12.459359
Show Author Affiliations
Francois Menard, Observatoire de Grenoble (France)
Xavier Delfosse, Observatoire de Grenoble (France)
Jean-Louis Monin, Observatoire de Grenoble (France)
Nicholas Peretto, CEA-Saclay (France)


Published in SPIE Proceedings Vol. 4843:
Polarimetry in Astronomy
Silvano Fineschi, Editor(s)

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