Radial velocity curve of RBS 490

RBS (ROSAT Bright Source) 0490 is a cataclysmic variable star (CV) with unusually strong emission lines. The strength of the emission lines has led to a suggestion that the...RBS 0490（ROSAT亮源，ROSAT Bright Source）是一颗拥有异常强烈发射线的激变变星（cataclysmic variable star, CV）。其发射线的强度之高，促使研究者提出了……这一假说。