Through the optical cross identifications made by the 2.16 m telescope, OMR Spectrograph and TEK 1024 CCD camera at Beijing Astronomical Observatory, five ROSAT-VLA selected X-ray sources, 0110+415, 0115+252, 0123+342, 0136+390, 0159+104 were found to be new BL Lac objects.
Acta Astrophysica Sinica
- Pub Date:
- July 1997
- BL Lacertae Objects: Discoveries;
- BL Lacertae Objects: X-Ray Sources