71 citations · 326 across the 12 of their papers we have counts for
7 papers · 1 filter
The impact of spectra quality on nebular abundances
Mónica Rodríguez
I explore the effects of observational errors on nebular chemical abundances using a sample of 179 optical spectra of 42 planetary nebulae (PNe) observed by different authors. The…
The impact of atomic data selection on nebular abundance determinations
Leticia Juan de Dios, Mónica Rodríguez
Atomic data are an important source of systematic uncertainty in our determinations of nebular chemical abundances. However, we do not have good estimates of these uncertainties si…
C/O Abundance Ratios and Dust Features in Galactic Planetary Nebulae
G. Delgado-Inglada, M. Rodríguez
The iron depletion factors found in Galactic planetary nebulae (PNe) span over two orders of magnitude, suggesting that there are differences in the grain formation and destruction…
Chlorine and Sulfur in Nearby Planetary Nebulae and H II Regions
Mónica Rodríguez, Gloria Delgado-Inglada
We derive the chlorine abundances in a sample of nearby planetary nebulae (PNe) and H II regions that have some of the best available spectra. We use a nearly homogeneous procedure…
The Oxygen Abundance in the Solar Neighborhood
Mónica Rodríguez, Gloria Delgado-Inglada
We present a homogeneous analysis of the oxygen abundance in five H II regions and eight planetary nebulae (PNe) located at distances lower than 2 kpc and with available spectra of…
An overabundance of oxygen in planetary nebulae of the solar neighborhood
Mónica Rodríguez, Gloria Delgado-Inglada
We study the oxygen abundance in five H II regions and seven planetary nebulae (PNe) located within 2 kpc from the Sun that have available spectra of high quality. Our analysis use…
Temperature Structure and Metallicity in H II Regions
Mónica Rodríguez, Jorge García-Rojas
The metallicities implied by collisionally excited lines (CELs) of heavy elements in H II regions are systematically lower than those implied by recombination lines (RLs) by factor…