一种新的多三角形星图识别算法

针对星敏感器星图识别算法只能处理少数目恒星的问题,结合天文观测相机进行星图识别的具体要求,提出了一种适合天文观测相机的多三角形星图识别算法.首先,选用欧洲空间局2000年2月发布的第谷2天文星表作为原始导航星表;其次,采用交叠矩形法分天区后建立导航星数据库;最后,根据天文观测相机拍摄的实际星图建立了观测星数据库;并应用多三角形星图识别算法进行星图识别的验证,实验结果表明：针对天文观测相机多三角形星图识别算法是可行的,也是可靠的.     

Computer identification of celestial objects and its problems: the case of optical identification of X-ray sources

Summary When a new celestial source is detected in an energy range, for example X-rays, where the total number of known sources is relatively small, attempts will be made to identify it with objects already known in other energy ranges. We discuss the problems that we encountered in trying to identify a number of X-ray sources, detected by the Imaging Proportional Counter of the Einstein Observatory, with catalogued extragalactic objects. The main problem is the lack of precision in the coordinates of the less recent catalogues. To speed up publication, the proofs were not sent to the authors and were supervised by the Scientific Committee.     

A complete data base of kinematical data for early-type galaxies

Summary As a result of an exhaustive bibliographical search covering the period 1975–1988, a complete catalogue of kinematical data for early-type galaxies (ellipticals and lenticulars) has been compiled. The catalogue contains all data—both in tabular and in plotted form—appeared in specialized literature before December 1988 and includes central velocity dispersions, rotation curves, and velocity dispersion profiles for 846, 174 and 108 objects, respectively. The catalogue is also available on magnetic tape—made available to the astronomical community through the Strasbourg Data Center—and will be updated yearly. To speed up publication, the proofs were not sent to the authors and were supervised by the Scientific Committee.