AY Peg, a large amplitude Algol-type star

TL;DR

This paper presents new observational data and analysis of the variable star AY Peg, revealing a refined ephemeris and a deeper primary minimum amplitude than previously recorded, based on visual, CCD, and survey data.

Contribution

It provides updated light variation elements and a revised ephemeris for AY Peg, highlighting a deeper primary eclipse amplitude than prior catalogs.

Findings

Refined ephemeris with quadratic term

Deeper primary minimum amplitude observed

Brightness varies between 13.1 and 15.6 magnitude

Abstract

The present paper gives new elements for the light variations of the EA variable star AY Peg, on the basis of new times of minimum performed visually and with ccd by members of GEOS between 1985 and 2018, and the ASAS-SN set of data available. On one hand, we can establish a new ephemeris with a possible quadratic term, and on the other hand, the amplitude of the primary minimum appears much deeper than the one given in GCVS. AY Peg varies between 13.1 and 15.6 magnitude at its primary eclipse.