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1 Introduction
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2 Infrared and optical B-V/V-K radial color gradients and QBVK combined color indices
of the Cartwheel galaxy
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3 Theoretical modelling of the Cartwheel's color properties:
Orbit crowded density wave plus a Schmidt law of star formation
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4 Model B-V/V-K radial color gradients and QBVK indices of the Cartwheel
galaxy
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5 The inner ring and the nucleus
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6 Conclusions
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References
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