SIMBAD references

2002A&A...395..515B - Astronomy and Astrophysics, volume 395, 515-518 (2002/11-4)

On the lithium content of the globular cluster M 92.


Abstract (from CDS):

I use literature data and a new temperature calibration to determine the Li abundances in the globular cluster M 92. Based on the same data, Boesgaard et al. have claimed that there is a dispersion in Li abundances in excess of observational errors. This result has been brought as evidence for Li depletion in metal-poor dwarfs. In the present note I argue that there is no strong evidence for intrinsic dispersion in Li abundances, although a dispersion as large as 0.18 dex is possible. The mean Li abundance, A(Li)=2.36, is in good agreement with recent results for field stars and TO stars in the metal-poor globular cluster NGC 6397. The simplest interpretation is that this constant value represents the primordial Li abundance.

Abstract Copyright:

Journal keyword(s): diffusion - stars: abundances - stars: atmospheres - stars: population II - Galaxy: globular clusters: individual: M 92 - cosmology: observations

Simbad objects: 19

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