Study of the $\mu$ Cet Binary with Speckle Interferometric, Photometric and Spectroscopic Techniques

TL;DR

This study refines the orbit of the $$ Cet binary system using speckle interferometry, and characterizes the main component as a non-peculiar main sequence star exhibiting $b4$ Dor pulsations based on photometric and spectroscopic data.

Contribution

The paper provides a refined speckle-interferometric orbit and reclassifies the main component as a non-peculiar main sequence star with pulsations, correcting previous classifications.

Findings

Refined the binary orbit of $$ Cet using speckle interferometry.

Reclassified the main component as a non-peculiar main sequence star.

Detected $b4$ Dor pulsations in the primary star.

Abstract

We present a refined speckle-interferometric orbit of a binary system $\mu$ Cet, with the main component studied based on the analysis of photometric and spectroscopic data, obtained at the SAO RAS 6-m telescope. The object was initially classified as a giant with chemical composition anomalies. As a result of our analysis, we conclude that the star belongs to the Main Sequence, to the class of non-peculiar stars. Analysis of photometric data from the TESS mission indicates that the main component of the system belongs to the $\gamma$ Dor pulsators.