Heavy element diffusion and globular cluster ages

Details Heavy element diffusion and globular cluster ages Heavy element diffusion and globular cluster ages

1997-05-06

arxiv.org/abs/astro-ph/9705035v1

Astron. astrophys. 123 (1997) 449

Astronomy and Astrophysics

Astrophysics

15 pages, Tex, 3 latex tables, postscript figures, in publication on Astronomy and Astrophysics

Scientific paper

This paper discusses low mass, metal poor stars, presenting new evolutionary computations which take into account the inward diffusion of both He and heavy elements during the H burning phase. The investigation has been extended to He burning models, discussing the luminosity of the Zero Age Horizontal Branch (ZAHB) models originated from progenitors with efficient element diffusion. We find that diffusion of heavy elements plays a non-negligible role in the evolutionary paths of the model. One finds that element diffusion has a sensitive influence on evolutionary models, a less significant effect on the isochrone turn off and, finally, a rather marginal impact on the difference in luminosity between the ZAHB and the isochrone Turn-Off (TO). The consequences of these results on current evaluations of globular cluster ages are discussed in connection with possible sources of errors.

Affiliated with

Also associated with

No associations

Rating

Heavy element diffusion and globular cluster ages 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 Heavy element diffusion and globular cluster ages, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Heavy element diffusion and globular cluster ages will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-640893