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Chemical similarities between the Galactic bulge and local thick disk red giant stars: analysis from optical data

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Autor(es):
Alves-Brito, Alan ; Melendez, Jorge ; Asplund, Martin ; Cunha, K ; Spite, M ; Barbuy, B
Número total de Autores: 6
Tipo de documento: Artigo Científico
Fonte: COSMIC MAGNETIC FIELDS: FROM PLANETS, TO STARS AND GALAXIES; v. N/A, n. 265, p. 2-pg., 2010-01-01.
Resumo

The Galactic structure and composition remain as one of the greatest open problems in modern astrophysics. We show here that there are chemical similarities between the Galactic bulge and local thick disk red giant stars. This finding puts strong constraints on the IMF, SFR. and chemical enrichment timescale of the bulge and thick disk. Our results are based upon a detailed elemental abundance analysis of 80 high S/N and high resolution optical spectra of giant stars, in the range -1.5 < [Fe/H] < +0.5. (AU)

Processo FAPESP: 04/00287-9 - Síntese de populações em galáxias próximas
Beneficiário:Alan Alves Brito
Modalidade de apoio: Bolsas no Brasil - Doutorado