The wavelength dependence of interstellar polarization in M31

Details The wavelength dependence of interstellar polarization in M31 The wavelength dependence of interstellar polarization in M31

Jul 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979apj...231l..57m&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor, vol. 231, July 15, 1979, p. L57-L59. Research supported by the National S

Astronomy and Astrophysics

Astrophysics

15

Andromeda Galaxy, Globular Clusters, Interstellar Extinction, Interstellar Matter, Polarization (Waves), Astronomical Photometry, Wavelengths

Scientific paper

The wavelength dependence of interstellar polarization has been measured at one position in M31. The low value of the wavelength of maximum polarization (0.43 + or - 0.06 micron) suggests a small particle size and is consistent with the low value of the ratio of total to selective extinction (2.5 + or - 0.14) found in previous photometric determinations. Baade 327 was found to have a high polarization, 6.3%, and hence has an unexpectedly high alignment efficiency (5%/mag) for such a highly reddened cluster.

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