论文标题
幅度前星目录中幅度的准确性
Accuracy of magnitudes in pre-telescopic star catalogues
论文作者
论文摘要
Ptolemy（公元137），As-Sufi（964）和Tycho Brahe（1602/27）的目录中的历史恒星大幅面被转换为Johnson V-MAG量表，并将其与河马目录中的现代价值进行了比较。测试了对三种不同观察力影响的依赖性的偏差（或“错误”）。 Hearnshaw（1999）在所有三个目录中发现了历史和现代幅度之间的关系在所有三个目录中都是线性的。在整个数据集和AS-SUFI以及Brahe的数据中显示了对颜色指数（B-V）的略有依赖性（B-V），这也使高潮高度（表明灭绝）的恒星具有淡淡的值。在所有三个目录中，一颗恒星的估计幅度都受到周围环境的亮度的影响。校正这三个效果后，幅度误差内的剩余方差可以视为te镜前幅度估计的近似精度。最终转换和更正的大小可通过Vizier目录访问工具（Ochsenbein，Bauer和Marcout，2000年）获得。
Historical star magnitudes from catalogues by Ptolemy (137 AD), as-Sufi (964) and Tycho Brahe (1602/27) are converted to the Johnson V-mag scale and compared to modern day values from the HIPPARCOS catalogue. The deviations (or "errors") are tested for dependencies on three different observational influences. The relation between historical and modern magnitudes is found to be linear in all three catalogues as it had previously been shown for the Almagest data by Hearnshaw (1999). A slight dependency on the colour index (B-V) is shown throughout the data sets and as-Sufi's as well as Brahe's data also give fainter values for stars of lower culmination height (indicating extinction). In all three catalogues, a star's estimated magnitude is influenced by the brightness of its immediate surroundings. After correction for the three effects, the remaining variance within the magnitude errors can be considered as approximate accuracy of the pre-telescopic magnitude estimates. The final converted and corrected magnitudes are available via the Vizier catalogue access tool (Ochsenbein, Bauer, & Marcout, 2000).
