New Abundances for Old Stars – Atomic Diffusion at Work in NGC 6397
2006 (English)In: The Messenger, ISSN 0722-6691, Vol. 125, 6-10 p.Article, review/survey (Other (popular scientific, debate etc.)) Published
A homogeneous spectroscopic analysis of unevolved and evolved stars in the metal-poor globular cluster NGC 6397 with FLAMES-UVES reveals systematic trends of stellar surface abundances that are likely caused by atomic diffu-sion. This finding helps to understand, among other issues, why the lithium abundances of old halo stars are sig-nificantly lower than the abundance found to be produced shortly after the Big Bang.
Place, publisher, year, edition, pages
2006. Vol. 125, 6-10 p.
IdentifiersURN: urn:nbn:se:uu:diva-25397OAI: oai:DiVA.org:uu-25397DiVA: diva2:53171