BV(RI)c photometric study of three variable PMS stars in the field of V733 Cephei

TL;DR

This study presents long-term BV(RI)c photometric observations of three variable pre-main-sequence stars near V733 Cep, revealing rapid variability and periodicity in two stars, contributing to understanding their photometric behavior.

Contribution

First long-term CCD photometric study of these PMS stars, identifying rapid variability and periodicity, enhancing knowledge of their photometric characteristics.

Findings

All stars show rapid variability in all passbands.

Two stars exhibit periodic light variations.

The study discusses possible causes of variability.

Abstract

This paper report results from the first long-term BV(RI)c photometric CCD observations of three variable pre-main-sequence stars collected during the period from February 2007 to January 2020. The investigated stars are located in the field of the PMS star V733 Cep within the Cepheus OB3 association. All stars from our study show rapid photometric variability in all-optical passbands. In this paper, we describe and discuss the photometric behavior of these stars and the possible reasons for their variability. In the light variation of two of the stars we found periodicity.