EPJ Web of Conferences
Volume 64, 2014Physics at the Magnetospheric Boundary
|Number of page(s)||4|
|Section||Observations of Young Stellar Objects|
|Published online||08 January 2014|
The magnetosphere of the close accreting PMS binary V4046 Sgr
1 School of Physics & Astronomy, University of St Andrews, St Andrews, KY16 9SS U.K.
2 Freytagstr. 7, D-79114 Freiburg i.Br., Germany
3 UPS-Toulouse/CNRS-INSU, Inst. de Recherche en Astro. et Planétologie, F-31400 Toulouse, France
4 ESO, Karl-Schwarzschild-Str. 2, D-85748 Garching, Germany
5 Institut d’Astrophysique de Paris, 98bis bd Arago, FR-75014 Paris, France
6 Obs. de Paris, LESIA, 5, place Jules Janssen, F-92195 Meudon Principal Cedex, France
7 Dept. de Fìsica - UFMG, Av. Antônio Carlos, 6627 30270-901 Belo Horizonte MG, Brazil
8 INAF-Osservatorio Astronomico di Palermo, Piazza del Parlamento 1, I-90134 Palermo Italy
9 ISDC Data Center for Astrophysics Univ. of Geneva, CH-1290 Versoix Switzerland
10 UJF-Grenoble 1/CNRS-INSU, IPAG, UMR 5274, F-38041, Grenoble, France
11 Dept. of Astrophysics, University of Vienna, Türkenschanzstrasse 17, A-1180, Vienna, Austria
12 MIT, Kavli Inst. for Astrophysics & Space Research, Cambridge, MA 02139, U.S.A.
13 CIS, Rochester Inst. of Technology, 54 Lomb Memorial Drive, Rochester, MA 02139, U.S.A.
14 INAF-Arcetri Astrophysical Observatory, Largo Enrico Fermi 5, I - 50125, Florence, Italy
15 Dept. of Physics, Royal Military College of Canada, Kingston, K7K 7B4, Canada
a e-mail: email@example.com
Published online: 8 January 2014
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.
© Owned by the authors, published by EDP Sciences, 2014
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 2.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.