33 citations · 70 across the 9 of their papers we have counts for
9 papers
Sulphur abundances in star-forming regions from optical emission lines: A new approach based on photoionization models consistent with the direct method
Enrique Pérez-Montero, Borja Pérez-Díaz, José M. Vílchez +5
The derivation of sulphur chemical abundances in the gas-phase of star-forming galaxies is explored in this work, using the emission lines produced in these regions in the optical…
Deriving the abundance distribution of HII galaxies using sulphur as tracer: Exploring the high-metallicity end
Marta Gavilán, Ángeles I. Díaz, Sandra Zamora
The main objective of this work is to derive the distribution of the the metal content of HII galaxies using sulphur as an abundance tracer. This increases the metallicity range th…
Physical properties of circumnuclear ionising clusters. II. NGC 7469
S. Zamora, Ángeles I. Díaz
Circumnuclear star forming regions (CNSFR) are massive clusters found close to galactic nuclei. These entities give us an excellent opportunity to study star formation in environme…
Physical properties of circumnuclear ionizing clusters: NGC 7742
S. Zamora, Ángeles I. Díaz
We have analyzed the circumnuclear ring of the spiral galaxy NGC7742 in order to understand its formation and evolution. We have obtained gaseous abundances, characterized the inte…
Using Sulfur as metallicity tracer in galaxies
Ángeles I. Díaz
We review the present methodology for the use of Sulfur as global metallicity tracer in galaxies, which allows performing a complete abundance analysis using mainly the red to near…
Interstellar reddening correction using He I lines
S. Zamora, Ángeles I. Díaz, Elena Terlevich +1
We present a method to derive the logarithmic extinction coefficient in optical wavelengths using the emission lines of HeI. Using this procedure we can avoid selection biases when…
2D-Galactic chemical evolution: the role of the spiral density wave
Mercedes Mollá, Sheillah Wekesa, Oscar Cavichia +6
We present a 2-dimensional chemical evolution code applied to a Milky Way type galaxy, incorporating the role of spiral arms in shaping azimuthal abundance variations, and confront…
The time evolution of the Milky Way's oxygen abundance gradient
M. Mollá, Á. I. Díaz, O. Cavichia +5
We study the evolution of oxygen abundance radial gradients as a function of time for the Milky Way Galaxy obtained with our {\sc Mulchem} chemical evolution model. We review the r…
A comprehensive approach to analyzing the XMM-Newton data of Seyfert 1 galaxies
Mónica V. Cardaci, María Santos-Lleó, Guillermo F. Hägele +3
Aims. We seek a comprehensive analysis of all the information provided by the XMM-Newton satellite of the four Seyfert 1 galaxies ESO 359-G19, HE 1143-1810, CTS A08.12, and Mrk 110…