An overview of the properties of a sample of newly-identified magnetic chemically peculiar stars in the Kepler field

TL;DR

This paper provides a detailed overview of 41 newly identified magnetic chemically peculiar stars in the Kepler field, highlighting their properties, variability, and potential for advancing understanding of CP star physics.

Contribution

It introduces a new sample of mCP stars with detailed light curves, revealing complex surface structures and variability patterns, expanding knowledge of CP star characteristics.

Findings

Many stars show complex surface structures in light curves

Monoperiodic variability and stability are key for candidate selection

Sample spans a wide age and mass range, from zero-age to terminal-age main sequence

Abstract

We present a comprehensive overview of the properties of a sample of 41 magnetic chemically peculiar stars that have been recently identified in the Kepler field by our team (H\"{u}mmerich et al. 2018). The stars populate the whole age range from zero-age to terminal-age main sequence in the mass interval from 1.5 to 4 Ms. Several of the studied objects exhibit a hitherto unobserved wealth of detail in their light curves indicative of persisting complex surface structures. Monoperiodic variability and light curve stability were identified as cardinal criteria for selecting mCP star candidates among early-type objects in photometric surveys. Subsequent studies will be concerned with an exhaustive follow-up analysis of the new mCP stars, which we expect to lead to new insights on the physics of the CP star phenomenon.