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Paper: The Petersen Diagram for RR Lyrae Stars in the Magellanic Clouds
Volume: 203, The Impact of Large-Scale Surveys on Pulsating Star Research, IAU Colloquium 176
Page: 276
Authors: Popielski, B. L.; Dziembowski, W. A.
Abstract: We show that the spread of the Magellanic Cloud RRd stars in the Petersen diagram may be explained in terms of spread in metallicity by one order of magnitude.
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