Collinder 261 Chandra X-Ray Source Optical Counterparts Catalog
收藏NASA Open Data Portal2025-06-14 收录
下载链接：
https://data.nasa.gov/dataset/collinder-261-chandra-x-ray-source-optical-counterparts-catalog
下载链接
链接失效反馈官方服务：
资源简介：
This table contains some of the results from the first X-ray study of Collinder 261 (Cr 261), which at an age of 7 Gyr is one of the oldest open clusters known in the Galaxy....
