2XMMi/SDSS Galaxy Cluster Survey

The authors have compiled a sample of X-ray-selected galaxy groups and clusters from the XMM-Newton Serendipitous Source Catalog (2XMMi-DR3) with optical confirmation...本文作者从XMM-牛顿望远镜（XMM-Newton）偶然源目录（2XMMi-DR3）中汇编得到一组经X射线筛选的星系群与星系团样本，并完成了光学证认……