71 citations · 326 across the 12 of their papers we have counts for
12 papers
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…
C/O ratios in planetary nebulae with dual-dust chemistry from faint optical recombination lines
J. García-Rojas, G. Delgado-Inglada, D. A. García-Hernández +4
We present deep high-resolution (R~15,000) and high-quality UVES optical spectrophotometry of nine planetary nebulae with dual-dust chemistry. We compute physical conditions from s…
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…
Oxygen enrichment in carbon-rich planetary nebulae
Gloria Delgado-Inglada, Mónica Rodríguez, Manuel Peimbert +2
We study the relation between the chemical composition and the type of dust present in a group of 20 Galactic planetary nebulae (PNe) that have high quality optical and infrared sp…
Faint Extended OH Emission from the Local Interstellar Medium in the Direction l \approx 108\circ, b \approx 5\circ
Ronald J. Allen, Mónica Ivette Rodríguez, John H. Black +1
We have mapped faint 1667 OH line emission (TA \approx 20 - 40 mK in our \approx 30' beam) along many lines of sight in the Galaxy covering an area of \approx 4\circ \times 4\circ…
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…
Enrichment of the ISM by metal-rich droplets and the abundance bias in HII regions
Grazyna Stasinska, Guillermo Tenorio-Tagle, Monica Rodriguez +1
We critically examine a scenario for the enrichment of the interstellar medium (ISM) in which supernova ejecta follow a long (10^8 yr) journey before falling back onto the galactic…
Massive star formation and tidal structures in HCG 31
Angel R. López-Sánchez, César Esteban, Mónica Rodríguez
We present new broad-band optical and near-infrared CCD imaging together with deep optical intermediate-resolution spectroscopy of the Hickson Compact Group 31. We analyze the morp…