164 citations · 368 across the 6 of their papers we have counts for
4 papers · 1 filter
Bayesian posterior classification of planetary nebulae according to the Peimbert types
C. Quireza, H. J. Rocha-Pinto, W. J. Maciel
In this paper we present a re-analysis of the criteria used to characterize the Peimbert classes I, IIa, IIb, III and IV, through a statistical study of a large sample of planetary…
Time variation of radial gradients in the galactic disk: electron temperatures and abundances
W. J. Maciel, C. Quireza, R. D. D. Costa
We investigate the electron temperature gradient in the galactic disk as measured by young HII regions on the basis of radio recombination lines and the corresponding gradient in p…
The Electron Temperature Gradient in the Galactic Disk
C. Quireza, R. T. Rood, T. M. Bania +2
We derive the electron temperature gradient in the Galactic disk using a sample of HII regions that spans Galactocentric distances 0--17 kpc. The electron temperature was calculate…
Radio Recombination Lines in Galactic HII Regions
Cintia Quireza, Robert T. Rood, Dana S. Balser +1
We report radio recombination line (RRL) and continuum observations of a sample of 106 Galactic HII regions made with the NRAO 140 Foot radio telescope in Green Bank, WV. We believ…