Asteroseismic Tests of Heavy Element Diffusion in Low- Mass Stars

Details Asteroseismic Tests of Heavy Element Diffusion in Low- Mass Stars Asteroseismic Tests of Heavy Element Diffusion in Low- Mass Stars

Dec 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aspc..416..415g&link_type=abstract

Solar-Stellar Dynamos as Revealed by Helio- and Asteroseismology: GONG 2008/SOHO 21 ASP Conference Series, Vol. 416, proceedings

Astronomy and Astrophysics

Astronomy

Scientific paper

Element diffusion is a basic physical element transport mechanism which is driven by gravitational settling and thermal diffusion. Considering heavy element (including helium and metal elements) diffusion, we construct a grid of low-mass models. We found that the element diffusion can speed up the evolution of the star, especially in the main sequence. Using an asteroseismic method, we study the effects of heavy element diffusion on the internal structure. The results show that it could enlarge the convective core and deepen the convective envelope. Thus, we can not neglect the effect of heavy element diffusion in low-mass stars. In addition, we also construct models with poor metallicity and found that the diffusion was restrained in the case of no surface convection zone.

Affiliated with

Also associated with

No associations

Rating

Asteroseismic Tests of Heavy Element Diffusion in Low- Mass Stars does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Asteroseismic Tests of Heavy Element Diffusion in Low- Mass Stars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Asteroseismic Tests of Heavy Element Diffusion in Low- Mass Stars will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1111132