A multi-wavelength study of T Tauri stars

• Tipo: Artigo em Livro de Atas de Conferência Internacional
• Data: 2001

Autores

Costa, VM (Autor) Outra; Brooks, DH (Autor) Outra; Gameiro, JF (Autor) FCUP; Lago, MTVT (Autor) FCUP

Ata de Conferência Internacional

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

Páginas: 615-620

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

CARGESE, FRANCE, APR 03-08, 2000

Indexação

ISI Web of Knowledge - 0 Citações

Classificação Científica

FOS: Ciências exactas e naturais > Física

Outras Informações

ID Authenticus: 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.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 6