Light Curves of Galactic Eclipsing Double Periodic Variables

TL;DR

This study investigates the nature of Galactic eclipsing double periodic variables by analyzing their light curves across multiple wavelengths, revealing their binary structure and cyclic variability characteristics.

Contribution

The paper provides the first detailed multiwavelength photometric analysis of Galactic eclipsing DPVs, clarifying their binary nature and variability patterns.

Findings

Orbital light curves are consistent with semi-detached binaries.

Long cycle amplitude increases in redder bands.

Orbital and cyclic variabilities are decoupled.

Abstract

We present results of the investigation of the nature of double periodic variables (DPVs). We have selected a sample of Galactic eclipsing DPVs for a multiwavelength photometric study aimed to reveal their nature. The short orbital periodicity and the cyclic variability are decoupled and separately investigated. Shapes of orbital light curves are consistent with semi-detached binaries. The amplitude of the long cycle is always larger in redder bandpasses.