Surface and Atmospheric Structure on the T Tauri Star V2129 Oph

F. M. Walter, E. Falccomio, S. Alencar, C. Argiroffi, J. Bouvier, J.-F. Donati, K. Getman, S. G. Gregory, G. A. J. Hussain, M. Ibrahimov, M. M. Jardine, M. B. Skelly

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

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.
Original languageEnglish
Title of host publication16th Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun
EditorsChristopher Johns-Krull, Matthew Browning, Andrew West
PublisherAstronomical Society of the Pacific
PagesE755-E760
Number of pages6
Volume448
ISBN (Electronic)9781583817773
ISBN (Print)9781583817766
Publication statusPublished - Dec 2011

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    Walter, F. M., Falccomio, E., Alencar, S., Argiroffi, C., Bouvier, J., Donati, J-F., Getman, K., Gregory, S. G., Hussain, G. A. J., Ibrahimov, M., Jardine, M. M., & Skelly, M. B. (2011). Surface and Atmospheric Structure on the T Tauri Star V2129 Oph. In C. Johns-Krull, M. Browning, & A. West (Eds.), 16th Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun (Vol. 448, pp. E755-E760). Astronomical Society of the Pacific.