Astronomy and Astrophysics – Astrophysics – Solar and Stellar Astrophysics
Scientific paper
2011-08-25
Astronomy and Astrophysics
Astrophysics
Solar and Stellar Astrophysics
Proc. of the workshop "Red Giants as Probes of the Structure and Evolution of the Milky Way" (Roma, 15-17 Nov 2010), Astrophys
Scientific paper
The influence of rotational mixing on the global parameters and asteroseismic properties of red giant stars is reviewed. While red giants are generally characterised by low surface rotational velocities, they may have been rotating much more rapidly during the main sequence, so that the rotational history of a star has a large impact on its properties during the red giant phase. For stars massive enough to ignite helium burning in non-degenerate conditions, rotational mixing leads to a significant increase of the stellar luminosity and shifts the location of the core helium burning phase to a higher luminosity in the HR diagram. This results in a change of the seismic properties of red giants and of the fundamental parameters of a red giant star as determined by performing an asteroseismic calibration. For red giants with a lower mass that undergo the helium flash, rotational mixing decreases the luminosity of the bump at solar metallicity changing thereby the global and asteroseismic properties of these stars.
Charbonnel Corinne
Eggenberger Patrick
Lagarde Nadege
No associations
LandOfFree
Impact of rotational mixing on the global and asteroseismic properties of red giants 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 Impact of rotational mixing on the global and asteroseismic properties of red giants, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Impact of rotational mixing on the global and asteroseismic properties of red giants will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-319191