Planetary nebulae in the inner Milky Way: new abundances

Autor(es)

Cavichia, O. ^[1] ; Costa, R. D. D. ^[1] ; Maciel, W. J. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Dept Astron, Inst Astron Geofis & Ciencias Atmosfer, BR-05508900 Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: REVISTA MEXICANA DE ASTRONOMIA Y ASTROFISICA; v. 46, n. 1, p. 159-177, APR 2010.
• Citações Web of Science: 17

Resumo

The study of planetary nebulae in the inner-disk and bulge gives important information on the chemical abundances of elements such as He, N, O, Ar, Ne, and on the evolution of these abundances, which is associated with the evolution of intermediate-mass stars and the chemical evolution of the Galaxy. We present accurate abundances of the elements He, N, S, O, Ar, and Ne for a sample of 54 planetary nebulae located towards the bulge of the Galaxy, for 33 of which the abundances are derived here for the first time. The abundances are obtained based on observations in the optical domain made at the National Laboratory for Astrophysics (LNA, Brazil). The data show a good agreement with other results in the literature, in the sense that the distribution of the abundances is similar to that of those works. (AU)

• Processo FAPESP: 07/07704-2 - Populações e evolução do bojo e região central da Galáxia
• Beneficiário: Oscar Cavichia de Moraes
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 05/03194-4 - Abundâncias químicas de nebulosas planetárias na conexão bojo-disco
• Beneficiário: Oscar Cavichia de Moraes
• Modalidade de apoio: Bolsas no Brasil - Mestrado