摘要
We present time resolved optical light curves in R bands obtained from differential photometry on sequential CCD frams of 4 new discovered high galactic latitude CVs, which are discovered by our spectroscopic observations of the optical identification of ROSAT X ray sources. The analysis of the light curves shows repeatable periodicity in these objects. J020348 7+295921 exhibits 0 5m variation with orbital period of 258 min. J062518 2+733433 reveals a 0 3 mag modulation with orbital period of 254min. J230949 6+213523 shows probably both orbital period of 207 min and WD spin period of 25 min. J232953 9+062814 present short period of 32min, indicating a magnetic system.
We present time resolved optical light curves in R bands obtained from differential photometry on sequential CCD frams of 4 new discovered high galactic latitude CVs, which are discovered by our spectroscopic observations of the optical identification of ROSAT X ray sources. The analysis of the light curves shows repeatable periodicity in these objects. J020348 7+295921 exhibits 0 5m variation with orbital period of 258 min. J062518 2+733433 reveals a 0 3 mag modulation with orbital period of 254min. J230949 6+213523 shows probably both orbital period of 207 min and WD spin period of 25 min. J232953 9+062814 present short period of 32min, indicating a magnetic system.
出处
《天文研究与技术》
CSCD
1999年第S1期387-391,共5页
Astronomical Research & Technology