The linear polarisation of southern bright stars measured at the parts-per-million level

  title={The linear polarisation of southern bright stars measured at the parts-per-million level},
  author={Daniel V. Cotton and Jeremy Bailey and Lucyna Kedziora-Chudczer and Kimberly Bott and Philip W. Lucas and James Hough and Jonathan P. Marshall},
We report observations of the linear polarisation of a sample of 50 nearby southern bright stars measured to a median sensitivity of ∼4.4 ×10−6. We find larger polarisations and more highly polarised stars than in the previous PlanetPol survey of northern bright stars. This is attributed to a dustier interstellar medium in the mid-plane of the Galaxy, together with a population containing more B-type stars leading to more intrinsically polarised stars, as well as using a wavelength more… 
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