Magnetic stars from a FEROS cool Ap star survey
V. G. Elkin, D. W. Kurtz, C. Nitschelm

TL;DR
This paper reports the discovery and analysis of 15 new magnetic Ap stars with strong magnetic fields, using FEROS spectroscopic data, and discusses the relationship between magnetic field strength and stellar rotation.
Contribution
It introduces new magnetic Ap stars with measured strong magnetic fields and provides insights into their physical parameters and magnetic field-rotation relationship.
Findings
Discovery of 15 new magnetic Ap stars.
Identification of stars with magnetic fields up to 16.5 kG.
Analysis of the correlation between magnetic field strength and rotation period.
Abstract
New magnetic Ap stars with split Zeeman components are presented. These stars were discovered from observations with the FEROS spectrograph at the ESO 2.2-m telescope. Fifteen new magnetic stars are analysed here. Several stars with very strong magnetic fields were found, including HD\,70702 with a 15-kG, and HD\,168767 with a 16.5-kG magnetic field strength measured using split Zeeman components of spectral lines and by comparison with synthetic calculations. The physical parameters of the stars were estimated from photometric and spectroscopic data. Together with previously published results for stars with strong magnetic fields, the relationship between magnetic field strength and rotation period is discussed.
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