Magnetic fields and accretion flows on the classical T Tauri star V2129 Oph*
J.-F. DonatiLATT, CNRS-UMR 5572, Obs. Midi-Pyrnes, 14 Av. E. Belin, F-31400 Toulouse, FranceM. M. JardineS. G. GregoryP. PetitJ. BouvierC. DougadosF. MénardA. C. CameronT. J. HarriesS.V. JeffersF. PaletouLATT, CNRS-UMR 5572, Obs. Midi-Pyrnes, 14 Av. E. Belin, F-31400 Toulouse, France
2007en
ABI
Abstract
From observations collected with the ESPaDOnS spectropolarimeter, we report the discovery of magnetic fields at the surface of the mildly accreting classical T Tauri star (cTTS) V2129 Oph. Zeeman signatures are detected, both in photospheric lines and in the emission lines formed at the base of the accretion funnels linking the disc to the protostar, and monitored over the whole rotation cycle of V2129 Oph. We observe that rotational modulation dominates the temporal variations of both unpolarized and circularly polarized line profiles.
Identifiers
Citations and references
Cited by 30 references