IDL routines to compute XYZ and UVW coordinates

These IDL routines can be used to transform ra, dec, distance and the error on distance for any number of stars to XYZ coordinates and their errors, as well as ra, dec, distance, proper motion and radial velocity to UVW coordinates and their errors. This package includes a modification on the glactc.pro astrolib routine that is significantly faster with large sets of objects (see individual .pro files for more details). Please refer to Gagné et al. 2014 (see link) when using these routines.

本套交互式数据语言（Interactive Data Language，IDL）程序可将任意数量恒星的赤经（Right Ascension，RA）、赤纬（Declination，Dec）、距离及其距离误差转换为XYZ坐标及其对应误差；同时支持将恒星的赤经、赤纬、距离、自行与视向速度转换为UVW坐标及其对应误差。本工具包对glactc.pro天文库（astrolib）程序进行了优化改进，针对大样本天体集的处理速度显著提升，详细信息请参见各独立.pro文件。使用本套程序时，请引用Gagné等人2014年的研究成果（详见链接）。