First frequency analysis for three new members of the group of eclipsing binaries with a pulsating component

TL;DR

This study presents the first light curves and pulsation analysis of three eclipsing binary systems, revealing multiperiodic pulsations in their components and providing initial models and parameters for these systems.

Contribution

It introduces the first detailed pulsation analysis and light curve modeling for three new eclipsing binaries with pulsating components, including frequency detection and evolutionary estimates.

Findings

Primary components pulsate in multiperiodic modes within delta Scuti range

USNO-A2.0 1200-03937339 shows gamma Dor frequencies

Photometric models and rough parameters estimated for the systems

Abstract

We present the first light curves and pulsation analysis results for V729 Aql and two newly discovered eclipsing binaries, namely USNO-A2.0 0975-17281677 and USNO-A2.0 1200-03937339. Frequency search was applied on the residuals of their light curves and the results showed that their primary components pulsate in multiperiodic modes and lie well inside the frequency and temperature range of ? delta Scuti stars. Moreover, for USNO-A2.0 1200-03937339 two frequencies inside the gamma Dor frequency range were also detected, but their origin is discussed. The photometric models of USNO-A2.0 1200-03937339 and V729 Aql are also presented, while their absolute parameters as well as the evolutionary status of their components were roughly estimated.