Oxygen and helium abundances in galactic h II regions: abundance gradients

Absolute integrated uxes have been obtained for 34 H II regions, with Galactocentricdistances RG in the 6.6{17.7 kpc range, in the emission lines [O II] 3726and 3729, [O III] 4363 and 5007, He I 5876, H and H. These uxes are analyzedto derive the physical parameters, the ionic abundances O+/H+, O++...

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Bibliographic Details
Published in:Revista Mexicana de Astronomía y Astrofísica
Main Authors: R. Costero, M. Peña, L. Deharveng
Format: Artigo
Language:Inglês
Published: Universidad Nacional Autónoma de México 2000
Subjects:
Física, Astronomía y Matemáticas
H II REGIONS
ISM: ABUNDANCES
GALAXY: ABUNDANCES
Online Access:https://www.redalyc.org/articulo.oa?id=57100945
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