Staying star gamma Equ

TL;DR

This paper reports the discovery of an extremely long rotational period of approximately 97 years for the star gamma Equ, which is vastly longer than typical for similar stars, and explores potential mechanisms behind this anomaly.

Contribution

It presents the first measurement of such an extraordinarily long rotational period for gamma Equ and discusses possible explanations for this unique phenomenon.

Findings

Rotational period of gamma Equ is approximately 97 years.

The star's rotation is practically nonrotating.

The period is about 35,000 times longer than typical for similar stars.

Abstract

We determined rotational period of practically nonrotating Ap star gamma Equ and claim $P_{\rm rot}= 97$ years. This period is about 35000 times larger than the average rotational period among stars of the same spectral class. Paper discusses possible mechanism explaining the origin of this phenomenon.