Abstract:
We present photometric observations of four stars that are
optical counterparts of soft X-ray/EUV sources, namely 1ES 0829+15.9,
1ES0920-13.6, 2RE J110159+223509 and 1ES 1737+61.2. We have dis-
covered periodic variability in two of the stars, viz., MCC 527 (1ES
0829+15.9; Period = 0ᵈ .828 ± 0.0047) and HD 81032 (1ES 0920-13.6;
Period = ∼ 57.02 ± 0.560 days). HD 95559 (2RE J110159+223509) is
found to show a period of 3ᵈ . HD 160934 (1ES1737+61.2) also shows
photometric variability but needs to be monitored further for finding its
period. These stars most likely belong to the class of chromospherically
active stars.