连接紫外区和光学区:{ \it GALEX }和{ \it UBV }光度系统之间的转换方程
Bridging the Ultraviolet and Optical Regions: Transformation Equations between {\it GALEX} and {\it UBV} Photometric Systems
摘要:
利用556颗恒星的可靠数据,推导出了GALEX和UBV颜色之间的转换方程。我们提出了两组方程,作为(仅)光度类的函数,以及作为光度类和金属丰度的函数。金属丰度是从文献中提供的,而光度类是通过使用PARSEC质量轨迹在这项研究中确定的。小的颜色残差和高的平方相关系数保证了精确的颜色。应用该转换方程对70颗有可靠数据的恒星进行了计算,结果表明,金属丰度在更精确的颜色估计中起着重要作用。
英文摘要:
We derive transformation equations between GALEX and UBV colours by using the reliable data of 556 stars. We present two sets of equations; as a function of (only) luminosity class, and as a function of both luminosity class and metallicity. The metallicities are provided from the literature, while the luminosity classes are determined by using the PARSEC mass tracks in this study. Small colour residuals and high squared correlation coefficients promise accurate derived colours. The application of the transformation equations to 70 stars with reliable data shows that the metallicity plays an important role in estimation of more accurate colours.
机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。