Site Map
Contacts
Follow us on Facebook Follow us on Twitter YouTube channel
Centro de Astrofísica da Universidade do Porto

Preliminary MUSICOS 96 results on Balmer line variability on the T Tauri star SU Aurigae

J. Marques Oliveira, Y. C. Unruh, B. H. Foing, The MUSICOS Collaboration

Abstract
The study of young stellar objects is essential for the further understanding of the early evolutionary stages of the Sun and similar low-mass stars. In this context, T Tauri stars supply valuable information on their pre-main sequence evolution. SU Aur is a classical T Tauri star that shows little veiling and few emission lines. The Balmer line profiles are extremely variable, even on short time scales. We present results from the analysis of the variability of these spectral lines, based on a data set obtained during the world-wide multi-site spectroscopic MUSICOS 1996 campaign. We attempt to describe the interaction of the stellar magnetosphere and the accretion disk, and search for the signatures of mass inflow and ejection.

Advances in Space Research
Volume 26, Page 1747
January 2001

>> ADS>> DOI

Institute of Astrophysics and Space Sciences

Institute of Astrophysics and Space Sciences (IA) is a new but long anticipated research infrastructure with a national dimension. It embodies a bold but feasible vision for the development of Astronomy, Astrophysics and Space Sciences in Portugal, taking full advantage and fully realizing the potential created by the national membership of the European Space Agency (ESA) and the European Southern Observatory (ESO). IA resulted from the merging the two most prominent research units in the field in Portugal: the Centre for Astrophysics of the University of Porto (CAUP) and the Center for Astronomy and Astrophysics of the University of Lisbon (CAAUL). It currently hosts more than two-thirds of all active researchers working in Space Sciences in Portugal, and is responsible for an even greater fraction of the national productivity in international ISI journals in the area of Space Sciences. This is the scientific area with the highest relative impact factor (1.65 times above the international average) and the field with the highest average number of citations per article for Portugal.

Proceed on CAUP's website|Go to IA website