6245 20230127145310.0 10.1093/mnras/stac279 DOI SCART-2023-0100 Kobzar, O. Analysis of eight magnetic chemically peculiar stars with rotational modulation 2022 eprint: arXiv:2208.03301 Since the end of 2018, the Transiting Exoplanet Survey Satellite (TESS) has provided stellar photometry to the astronomical community. We have used TESS data to study rotational modulation in the light curves of a sample of chemically peculiar stars with measured large-scale magnetic fields (mCP stars). In general, mCP stars show inhomogeneous distributions of elements in their atmospheres that lead to spectroscopic (line profile) and photometric (light curve) variations commensurate with the rotational period. We analyzed the available TESS data from 50 sectors for eight targets after post-processing them in order to minimize systematic instrumental trends. Analysis of the light curves allowed us to determine rotational periods for all eight of our targets. For each star, we provide a phase diagram calculated using the derived period from the light curves and from the available measurements of the disc-averaged longitudinal magnetic field. In most cases, the phased light curve and z measurements show consistent variability. Using our rotation periods, and global stellar parameters derived from fitting Balmer line profiles, and from Geneva and Stroemgren-Crawford photometry, we determined the equatorial rotational velocities and calculated the respective critical rotational fractions v_eq/v_crit. We have shown from our sample that the critical rotational fraction decreases with stellar age, at a rate consistent with the magnetic braking observed in the larger population of mCP stars. NO Stars: chemically peculiar stars: fundamental parameters stars: individual: HD 10840; HD 22920; HD 24712; HD 38170; HD 63401; HD 74521; HD 77314; HD 86592 stars: magnetic field stars: rotation Astrophysics - Solar and Stellar Astrophysics Khalack, V. Bohlender, D. Mathys, G. Shultz, M. E. Bowman, D. M. Paunzen, E. Lovekin, C. David-Uraz, A. Sikora, J. Lampens, P. Richard, O. Monthly Notices of the Royal Astronomical Society 517 2022 5340 - 5357 patricia.lampens@observatoire.be https://ui.adsabs.harvard.edu/abs/2022MNRAS.517.5340K published in REFERD