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A DIGITAL ANALYSIS OF THE COLOR STRUCTURE WITHIN MESSIER 51

SIMON P. WORDEN
Publications of the Astronomical Society of the Pacific
Vol. 86, No. 509 (February 1974), pp. 92-98
Stable URL: http://www.jstor.org/stable/40675503
Page Count: 7
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
A DIGITAL ANALYSIS OF THE COLOR STRUCTURE WITHIN MESSIER 51
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Abstract

Blue and visual photographic plates of Messier 51 have been digitally analyzed to give computer produced (B— V) maps of M51. The technique used to accomplish this is described and this material is compared with the preliminary Westerbork 21-cm neutral hydrogen data. The indication of a ring of blue stars in the nucleus of M51 is reported.

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