Photometric study of the short-period RS CVn eclipsing binary DV Psc

TL;DR

This study provides new photometric and spectroscopic data on the short-period RS CVn binary DV Psc, detecting potential flare events, analyzing starspot parameters, and estimating its magnetic cycle duration.

Contribution

It offers the first detection of flare-like events in DV Psc and estimates its magnetic cycle using new observational data and modeling.

Findings

Flare rate of about 0.017 flares per hour.

Detection of three potential flare events.

Magnetic cycle estimated at approximately 9.26 years.

Abstract

We present our new photometry of DV Psc obtained in 2010 and 2011, and new spectroscopic observation on Feb. 14, 2012. During our observations, three flare-like events might be detected firstly in one period on DV Psc. The flare rate of DV Psc is about 0.017 flares per hour. Using Wilson-Devinney program, we derived the preliminary starspot parameters. Moreover, the magnetic cycle is 9.26(+/-0.78) year analyzed by variabilities of Max.I - Max.II.