Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997a%26a...318...37b&link_type=abstract
Astronomy and Astrophysics, v.318, p.37-39
Astronomy and Astrophysics
Astrophysics
11
Polarization, Dust, Extinction, Solar Neighbourhood
Scientific paper
We have measured linear polarization for 20 distant high latitude A and F stars, as a first step to extend our previous study (Berdyugin et al. 1995A&A...294..568B: Paper I) of the North Galactic polar cap to distances larger than 600pc. The results give tentative evidence for depolarization starting to be seen around Z=~500pc, possibly indicating that there is a significant change in the magnetic field direction. Depolarization requires that there is still light-polarizing dust in the Z range 500-1000pc and the lower limit to extinction inferred in Paper I (A_B_>0.11mag) must be increased by a yet undetermined amount.
Berdyugin Andrei
Teerikorpi Pekka
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