Long-term Photometric Study of the Pre-main Sequence Star V1180 Cas

Abstract

In this paper results from the optical photometric observations of the pre-main-sequence star V1180 Cas are reported. The star is a young variable associated with the dark cloud Lynds 1340, located at a distance of 600 pc from the Sun in the star forming region in Cassiopeia. V1180 Cas shows a large amplitude variability interpretated as a combination of accretion-induced and extinction-driven effects. Our data from VRI CCD photometric observations of the star are collected from September 2011 to February 2022. During our monitoring, we recorded several brightness dips with large amplitudes of up to 5 mag. (I-band). At the same time, increases in brightness over periods of several weeks have also been recorded. In this paper, we compare the photometric data obtained for V1180 Cas with observations of other low-mass pre-main sequence objects.

Photometric monitoring of PMS stars with the telescopes at Rozhen Observatory

“…Mainly the 2-m RCC and the Schmidt telescope of the Rozhen Observatory were used for the photometric observations of PMS stars. Additional information on the procedure for obtaining and analyzing the photometric data, as well as on the technical parameters of the CCD cameras used, can be found in Mutafov et al (2022). In order to construct the historical light curves of the studied objects, we have also used data from archival photographic observations where possible.…”