297 citations · 2.9k across the 51 of their papers we have counts for
51 papers
Density biases and temperature relations for DESIRED HII regions
J. E. Méndez-Delgado, C. Esteban, J. García-Rojas +6
We present a first study based on the analysis of the DEep Spectra of Ionized REgions Database (DESIRED). This is a compilation of 190 high signal-to-noise ratio optical spectra of…
Temperature inhomogeneities cause the abundance discrepancy in H II regions
J. Eduardo Méndez-Delgado, César Esteban, Jorge García-Rojas +2
HII regions, ionized nebulae where massive star formation has taken place, exhibit a wealth of emission lines that are the fundamental basis for estimating the chemical composition…
The homogeneity of chemical abundances in H II regions of the Magellanic Clouds
G. Domínguez-Guzmán, M. Rodríguez, J. García-Rojas +3
We use very deep spectra obtained with the Ultraviolet-Visual Echelle Spectrograph at the Very Large Telescope to derive physical conditions and chemical abundances of four H II re…
Photoionized Herbig-Haro objects in the Orion Nebula through deep high-spectral resolution spectroscopy III: HH514
J. E. Méndez-Delgado, C. Esteban, J. García-Rojas +2
We analyze the physical conditions and chemical composition of the photoionized Herbig-Haro object HH~514, which emerges from the proplyd 170-337 in the core of the Orion Nebula. W…
About Metallicity Variations in the Local Galactic Interstellar Medium
C. Esteban, J. E. Méndez-Delgado, J. García-Rojas +1
In this paper we discuss and confront recent results on metallicity variations in the local interstellar medium, obtained from observations of HII regions and neutral clouds of the…
Gradients of chemical abundances in the Milky Way from HII regions: distances derived from Gaia EDR3 parallaxes and temperature inhomogeneities
J. E. Méndez-Delgado, A. Amayo, K. Z. Arellano-Córdova +4
We present a reassessment of the radial abundance gradients of He, C, N, O, Ne, S, Cl, and Ar in the Milky Way using the deep optical spectra of 42 HII regions presented in Arellan…