The surface carbon and nitrogen abundances in models of ultra metal-poor stars

Details The surface carbon and nitrogen abundances in models of ultra metal-poor stars The surface carbon and nitrogen abundances in models of ultra metal-poor stars

2002-05-20

arxiv.org/abs/astro-ph/0205326v1

Astron.Astrophys. 395 (2002) 77-84

Astronomy and Astrophysics

Astrophysics

8 pages, 4 figures, submitted to A&A

Scientific paper

10.1051/0004-6361:20020813

We investigate whether the observed high number of carbon- and nitrogen-enhanced extremely metal-poor stars could be explained by peculiar evolutionary properties during the core He flash at the tip of the red giant branch. For this purpose we compute a series of detailed stellar models expanding upon our previous work; in particular, we investigate if during the major He flash the penetration of the helium convective zone into the overlying hydrogen-rich layers can produce carbon- and nitrogen-rich abundances in agreement with current spectroscopic observations. The dependence of this phenomenon on selected model input parameters, such as initial metallicity and treatment of convection is examined in detail.

Affiliated with

Also associated with

No associations

Rating

The surface carbon and nitrogen abundances in models of ultra metal-poor 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 The surface carbon and nitrogen abundances in models of ultra metal-poor stars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The surface carbon and nitrogen abundances in models of ultra metal-poor stars will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-242006