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An Improved Proper-motion Catalog Combining USNO-B and the Sloan Digital Sky Survey

出版	American Astronomical Society, 2004
URL	http://books.google.com.hk/books?id=wfUYtwAACAAJ&hl=&source=gbs_api

註釋Erratum: 'an Improved Proper-Motion Catalog Combining Usno-B and the Sloan Digital Sky Survey' (2004, AJ, 127, 3034) Abstract: The authors have discovered an error in the calculation of the proper motions in right ascension (the proper motions in declination were not affected by the error, and are thus correct). The error involves the use of an incorrect sign when interpreting the residuals in right ascension in the USNO-B catalog. The results of the error are as follows. For users working with samples of stars chosen to have significantly detected proper motions, the impact of the error should be small. However, for users working closer to the statistical error limit, or averaging over many stars to determine small mean motions, the additional errors are clearly significant. A corrected version of the catalog has been generated. The corrected motions will be available in Data Release 7 of the Sloan Digital Sky Survey Catalog Archive Server, due out in October 2008. Until then, corrected motions may be obtained by contacting the first author.