Using High Precision Stellar Observations to Constrain the Physics of Convection in Stars

Details Using High Precision Stellar Observations to Constrain the Physics of Convection in Stars Using High Precision Stellar Observations to Constrain the Physics of Convection in Stars

May 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21812501c&link_type=abstract

American Astronomical Society, AAS Meeting #218, #125.01; Bulletin of the American Astronomical Society, Vol. 43, 2011

Astronomy and Astrophysics

Astrophysics

Scientific paper

Arguably the most significant barrier to our full comprehension of stellar structure and evolution is the uncertainty in our understanding of stellar convection and its attendant mixing. Our current understanding of stellar convection, mixing length theory (MLT), describes convection as a process in which warmer pockets of fluid flow to the surface through a temperature gradient. The efficiency at which this transfers heat is dependent on the ratio of the surface area to the volume of the globule, gml. We use the stellar evolution simulation package MESA (Modules for Experiments in Stellar Astrophysics) together with new high precision observations of non-interacting binaries to constrain convection physics in low mass stars (M<1.2 Msun), specifically gml. Our data set contains 45 stars with precision mass, temperature and luminosity measurements (uncertainties at the few percent level) as well as observed relationships between turbulent surface velocity, surface gravity, and luminosity. This research was supported by the Arizona Space Grant Consortium.

Affiliated with

Also associated with

No associations

Rating

Using High Precision Stellar Observations to Constrain the Physics of Convection in 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 Using High Precision Stellar Observations to Constrain the Physics of Convection in Stars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Using High Precision Stellar Observations to Constrain the Physics of Convection in Stars will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1737083