Does the RR Lyrae variable DY And show the Blazhko effect?

TL;DR

This study combines observational data to refine the light curve and period of the RR Lyrae star DY And, providing evidence that suggests the presence of the Blazhko effect, a modulation phenomenon in variable stars.

Contribution

It presents a more accurate period and light curve for DY And and offers evidence indicating the Blazhko effect in this star, based on combined observational data.

Findings

Refined the period of DY And to 0.6030897 days.

Provided a new time of maximum for DY And.

Presented evidence suggesting the Blazhko effect in DY And.

Abstract

Data taken on the University of Sussex 0.46-m telescope in 2006 and 2007 are combined with previously published data to obtain a better defined light curve for the RRab-type variable DY And, a slightly improved period of 0.6030897 +0.0000006 -0.0000002 days and a new time of maximum. Evidence is presented that may indicate the Blazhko effect in this system. In addition, a new time of maximum has been obtained for VX Tri.