Published February 26, 2021 | Version v1
Poster Open

A very misinclined magnetic field: The case of the T Tauri star DK Tau

  • 1. Dublin Institute for Advanced Studies
  • 2. Tartu Observatory




We analyzed nine circularly polarized spectra of DK Tau (a classical T Tauri star), spanning over one rotation cycle and collected in 2010 with the spectropolarimeter ESPaDOnS (at the CFHT). We present a preliminary study of DK Tau's large-scale magnetic field configuration and the distribution of relative brightness across its surface, as well as the variability of its veiling (a signature of accretion). We find that the magnetic dipole is nearly perpendicular to the stellar rotation axis. We also find an anti-correlation of the veiling and the average magnetic field in the line-of-sight, Blos, showing the connection between the accretion and the magnetic field.



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Additional details


EASY – Ejection Accretion Structures in YSOs (EASY) 743029
European Commission


  • Donati, J. -F. et al. (1997). Spectropolarimetric observations of active stars.
  • Donati, J. -F. et al. (1997). Zeeman-Doppler imaging of active stars. V. Sensitivity of maximum entropy magnetic maps to field orientation.
  • Folsom, C. P. et al. (2018). The evolution of surface magnetic fields in young solar-type stars II: the early main sequence (250-650 Myr).
  • Manara, C. F. et al. (2019). Observational constraints on dust disk sizes in tidally truncated protoplanetary disks in multiple systems in the Taurus region.