A catalogue and statistical analysis for magnetic stars

TL;DR

This paper compiles a detailed catalogue of 1784 magnetic stars across various spectral types and analyzes their statistical magnetic properties, revealing that A and B-type stars have the strongest mean magnetic fields.

Contribution

It provides the first comprehensive catalogue of magnetic stars with detailed data and statistical analysis of their magnetic field distributions, highlighting spectral type differences.

Findings

Magnetic fields follow an exponential distribution function.

A and B-type stars exhibit the strongest mean magnetic fields.

Magnetic field detection is easier in A and B-type stars.

Abstract

Magnetic fields are significant in the structure and evolution of stars. We present a comprehensive catalogue of 1784 known magnetic stars, detailing their identifications, HD numbers, precise locations, spectral types, and averaged quadratic effective magnetic fields among other important information. The group comprises 177 O-type stars, 551 B-type stars, 520 A-type stars, 91 F-type stars, 53 G-type stars, 61 K-type stars, 31 M-type stars, and an additional 300 stars whose spectral classification remains indeterminate. Our analysis examines the statistical properties of these magnetic stars. The relative integrated distribution function and number distribution function for all magnetic stars of the same spectral type can be effectively approximated using an exponential function of the averaged quadratic effective magnetic field. The analysis further reveals that A and B-type stars possess the strongest mean magnetic fields, indicating an easier detection of their magnetic fields.