Skip to main content Accessibility help
×
Home

Importance of very Accurate Luminosities for Stellar Formation and Evolution

  • O. Bienaymé, C. Turon and A. Maeder (a1)

Abstract

We show that there is a wide range of problems, where high accuracy astrometry can bring new information in stellar evolution, not limited to the classical applications in the HR diagram, such as the determinations of the helium and metal contents and of the size of the convective core. In particular, we show some new applications to the study of star formation. The accurate measurement of the luminosity of the observed birthline in the HR diagram is a key information very sensitive to the mass accretion rates. These rates determine all the properties of the pre-MS models. For the evolution of massive stars with mass loss and rotational mixing, strong constraints can be obtained from the combination of astrometric data and abundance determinations obtained by high resolution spectroscopy. We also emphasize that a better knowledge of the luminosity distribution of WR stars is strongly constraining the final masses at the time of supernova explosions as well as the nucleosynthetic yields.

Copyright

Importance of very Accurate Luminosities for Stellar Formation and Evolution

  • O. Bienaymé, C. Turon and A. Maeder (a1)

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed