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This paper reports results from our long-term $BV(RI)_{c}$ photometric CCDobservations of eight pre-main-sequence stars collected from June 2008 toOctober 2022. These stars are located in the young open cluster Trumpler 37, inthe field of GM Cephei. The observational data indicate that all stars from ourstudy exhibit variability in all-optical passbands, typical for young stars. Inthis paper, we describe and discuss the photometric behavior of the stars andthe possible reasons for their variability. For two of the objects, weidentified periodicity in their light variation.

Study of the long-term $BVR_{c}I_{c}$ photometric variability of eight PMS stars in the young open cluster Trumpler 37