Astronomy and Astrophysics – Astrophysics
Scientific paper
Nov 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990esasp.315...43g&link_type=abstract
In ESA, Formation of Stars and Planets, and the Evolution of the Solar System p 43-51 (SEE N91-18922 10-90)
Astronomy and Astrophysics
Astrophysics
5
Star Formation, Stellar Flares, Stellar Mass Accretion, T Tauri Stars, Astrophysics, Chronology, Cooling Flows (Astrophysics), Cosmology, Early Stars, Star Formation Rate
Scientific paper
The properties of young low mass stars are discussed in relation to the formation of the solar system. The temporal evolution of young stars, like T Tauri stars and post T Tauri stars is discussed. Methods for age determination are reviewed. For comparisons with ideas about the early solar system it is of interest to map how certain parameters derived from observations depend on age and also the observed range at a given age. This may be used to find constraints on cosmogonic theories. The most important parameters available in this context are stellar luminosity, radius and rotation together with masses derived for what appears to be circumstellar disks. The remarkable eruptive process known as the FU Orion phenomenon is discussed as well as the radiative history of the stars. The significance of intensive flare like activity to planetary atmospheres is recognized.
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