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

TL;DR

This study presents a decade-long optical photometric monitoring of the young variable star V1180 Cas, revealing significant brightness variations due to accretion and extinction effects, and compares its behavior with similar pre-main sequence stars.

Contribution

It provides the first long-term optical photometric dataset for V1180 Cas, highlighting its variability patterns and contributing to understanding young stellar object behaviors.

Findings

Recorded brightness dips up to 5 mag in I-band.

Observed brightness increases over several weeks.

Compared V1180 Cas variability with other low-mass pre-main sequence stars.

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 interpreted 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.