Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981apj...251..108m&link_type=abstract
Astrophysical Journal, Part 1, vol. 251, Dec. 1, 1981, p. 108-112. Research supported by the Natural Sciences and Engineering R
Astronomy and Astrophysics
Astrophysics
17
Globular Clusters, Light Scattering, Optical Polarization, Rayleigh Scattering, Astronomical Models, Galactic Clusters, Optical Thickness, Polarization Characteristics
Scientific paper
It is shown by a simple model that the polarization of light scattered from Rayleigh scatterers such as dust particles, in patches in globular clusters, should under certain circumstances be observable. A search for such polarization of radiation from the dark patches in M3, M13 and M15 led to a tentative detection of the phenomenon in M15, at a value of 0.22% + or - 0.06%. The model calculations examine scattering by a small, optically thin cloud of dust embedded in a spherically symmetric cluster, in that plane perpendicular to the line of sight which contains the cluster center.
Martin Peter G.
Shawl Stephen J.
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