New Semiregular Variable Star Near The Wizard Nebula -- Evolution of the Red Giant MACOMP_V1

TL;DR

This paper studies the semiregular variable red giant star MaCoMP_V1 near the Wizard Nebula, analyzing its light curve, physical parameters, and evolutionary status using observational data and Fourier analysis.

Contribution

It provides the first detailed physical characterization and evolutionary analysis of the red giant MaCoMP_V1, including its period, mass, radius, and temperature.

Findings

Period of 24.75 days determined from Fourier analysis.

Mass estimated at approximately 5 solar masses.

Radius estimated at about 40.5 solar radii.

Abstract

The red giant MaCoMP_V1 in Cepheus at coordinates RA (J2000) 22:49:05:49 and DEC (J2000) +57:52:41:6 is a semiregular variable star classified as SRS, number 2225960 in the AAVSO VSX database. Using the Fourier transform, the period P = 24.751(0.062)d was evaluated and, with the support of the ASAS-SN and ZTF surveys, a well-defined light curve was made. The analysis resulted in the fundamental physical parameters of MaCoMP_V1, such as the mass M = 4.97(0.38)M(Sun) and radius R = 40.5(6.7)R(Sun), with consistent values suggesting the characteristics of a semiregular red giant. In addition, the effective temperature Teff = 4500(135)K from the Gaia catalog and the stellar evolution based on the Schoenberg-Chandraskehar limit was estimated.