A multi-wavelength study of T Tauri stars

• Type: Article in International Conference Proceedings Book
• Date: 2001

Authors

Costa, VM (Author) Other; Brooks, DH (Author) Other; Gameiro, JF (Author) FCUP; Lago, MTVT (Author) FCUP

Conference proceedings International

Title: FROM DARKNESS TO LIGHT: ORIGIN AND EVOLUTION OF YOUNG STELLAR CLUSTERS

Pages: 615-620

3rd 3-Island European Conference on Stellar Clusters and Associations - From Darkness to Light

CARGESE, FRANCE, APR 03-08, 2000

Indexing

ISI Web of Knowledge - 0 Citations

Scientific classification

FOS: Natural sciences > Physical sciences

Other information

Authenticus ID: P-000-X4M

Abstract (EN): We present results from a multi-wavelength study of T Tauri stars (TTS). This study is important for understanding the activity and evolution of young stars of different ages. Optical observations of blue/red-shifted absorption features are indicative of out/in-flows suggesting the presence of stellar winds and/or accretion. Constraints on the modelling are provided by the analysis of variability in the spectral features. The associated timescales have been used to differentiate between wind and infall regions and to help understand the boundary between out/in-flows around TTS. In addition, the UV spectroscopic analysis has recently been improved using collisional-radiative atomic models, resulting in more accurate determination of the atmospheric structure and physical properties of TTS and highlighting potential problems with the analysis methods. Our study of X-ray data has also revealed the connection between UV and X-ray emission which might be explained by solar-like coronal activity at a much higher level. Upcoming observations from XMM will allow a more complete examination of the detailed spectra.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 6