6533b829fe1ef96bd1289678
RESEARCH PRODUCT
Surface and Atmospheric Structure on the T Tauri Star V2129 Oph
F. M. WalterE. FalccomioS. AlencarCostanza ArgiroffiJ. BouvierJ. -F DonatiK. GetmanS. G. GregoryG. A. J. HussainM. IbrahimovM. M. JardineM. B. Skellysubject
spectroscopySettore FIS/05 - Astronomia E AstrofisicaaccretionT Tauridescription
We provide an overview of a multi-wavelength observing campaign focusing on the accretion and coronal processes in the young star V2129 Oph. V2129 Oph is a classical T Tauri star with a 6.5 day rotation period in the ρ Oph star forming region. On 27-29 June 2009 we obtained two 100 ksec Chandra HETG exposures, aiming at opposite hemispheres of the star. We discuss the X-ray data elsewhere. In order to place the coronal X-ray emission in context, we obtained contemporaneous optical and near-IR photometry and high dispersion optical spectroscopy. The photometry shows the existence of dark photospheric spots. The Hα line profiles show a modulation of the mean Hα velocity and the presence of red-shifted absorption, probably from the accretion stream, at certain phases. Zeeman Doppler images reveal the presence of both a cool spot and an accreting region at similar longitudes.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2011-01-01 |