We are back looking at a light curve this week. The image above shows the V, R, and I-band data we have for the star V594Ori. It is situated to the South East of the Orion Nebula in the L1641N target region of HOYS.
The object is classified as an Orion Variable. Those who read theses posts regularly will know it basically means the source varies stochastically. And indeed the data show a number of outbursting events. Some of these are quite long, others are very short, of the order of days. Furthermore, there are als a number of dimming events in the light curve.
If one zooms-into the data near the time of MJD=60200d then one finds that the object shows a clear periodic light curve with a period of about 7.85d. In other parts we find brief episodes (1-2months) of semi-periodic behaviour with slightly different periods. Thus, while one of these could be the rotation period, made visible by a temporarily spotted surface, it seems more likely that the changing periods are caused material orbiting in the in the inner part of the disk.
So indeed, this object has it all, burst, dimming events and periodic phases ….