A Study of the Wavelength Dependence of Interstellar Polarization Using a Scanning Spectropolarimeter

Details A Study of the Wavelength Dependence of Interstellar Polarization Using a Scanning Spectropolarimeter A Study of the Wavelength Dependence of Interstellar Polarization Using a Scanning Spectropolarimeter

Jul 1971

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1971ap%26ss..12..158w&link_type=abstract

Astrophysics and Space Science, Volume 12, Issue 1, pp.158-164

Astronomy and Astrophysics

Astrophysics

Scientific paper

A scanning spectropolarimeter has been constructed and used in a preliminary search for conspicuous features of the interstellar polarization curve betweenλ -1 = 1.58μ -1 and 2.50μ -1. The instrument was used at thef/4.5 prime focus of the 36″ telescope of the Cambridge University Observatories. Scans were made on HD2905, HD21389, α And and β Tau with slitwidths of 50 Å and 100 Å. The commonly adopted method of correcting for instrumental polarisation by using observations of unpolarized stars has been applied. The normalized polarization curves corrected for instrumental polarization for HD2905 and HD21389 reveal a feature nearλ -1 = 1.68μ -1 which is most probably of insterstellar rather than instrumental origin.

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