The magnetosphere of the close accreting PMS binary V4046 Sgr

TY - JOUR

T1 - The magnetosphere of the close accreting PMS binary V4046 Sgr

AU - Gregory, S. G.

AU - Holzwarth, V. R.

AU - Donati, J. -F.

AU - Hussain, G. A. J.

AU - Montmerle, T.

AU - Alecian, E.

AU - Alencar, S. H. P.

AU - Argiroffi, C.

AU - Audard, M.

AU - Bouvier, J.

AU - Damiani, F.

AU - Güdel, M.

AU - Huenemoerder, D. P.

AU - Kastner, J. H.

AU - Maggio, A.

AU - Sacco, G. G.

AU - Wade, G. A.

PY - 2014/1

Y1 - 2014/1

N2 - V4046 Sagittarii AB is a close short-period classical T Tauri binary. It is a circularised and synchronised system accreting from a circumbinary disk. In 2009 it was observed as part of a coordinated program involving near-simultaneous spectropolarimetric observations with ESPaDOnS at the Canada-France-Hawai'i Telescope and high-resolution X-ray observations with XMM-Newton. Magnetic maps of each star were derived from Zeeman-Doppler imaging. After briefly highlighting the most significant observational findings, we present a preliminary 3D model of the binary magnetosphere constructed from the magnetic maps using a newly developed binary magnetic field extrapolation code. The large-scale fields (the dipole components) of both stars are highly tilted with respect to their rotation axes, and their magnetic fields are linked.

AB - V4046 Sagittarii AB is a close short-period classical T Tauri binary. It is a circularised and synchronised system accreting from a circumbinary disk. In 2009 it was observed as part of a coordinated program involving near-simultaneous spectropolarimetric observations with ESPaDOnS at the Canada-France-Hawai'i Telescope and high-resolution X-ray observations with XMM-Newton. Magnetic maps of each star were derived from Zeeman-Doppler imaging. After briefly highlighting the most significant observational findings, we present a preliminary 3D model of the binary magnetosphere constructed from the magnetic maps using a newly developed binary magnetic field extrapolation code. The large-scale fields (the dipole components) of both stars are highly tilted with respect to their rotation axes, and their magnetic fields are linked.

UR - https://ui.adsabs.harvard.edu/#abs/2014EPJWC..6408009G

UR - https://arxiv.org/abs/1309.0103

U2 - 10.1051/epjconf/20136408009

DO - 10.1051/epjconf/20136408009

M3 - Article

SN - 2101-6275

VL - 64

JO - EPJ Web of Conferences

JF - EPJ Web of Conferences

M1 - 08009

ER -