272 citations · 772 across the 32 of their papers we have counts for
26 papers · 1 filter
Recalibration of the H surface brightness-radius relation for planetary nebulae using Gaia DR3: new distances and the Milky Way oxygen radial gradient
Oscar Cavichia, Hektor Monteiro, Miguel Cerviño +3
The spatial distribution of chemical elements in the Galactic disk provides key constraints on models of galaxy evolution. However, studies using planetary nebulae (PNe) as tracers…
Analysis of the Internal Radial Gradient of Chemical Abundances in Spiral Galaxies from CALIFA
A. F. S. Cardoso, O. Cavichia, M. Mollá +1
The study of chemical evolution is of paramount importance for understanding the galaxies evolution. Models and observations propose an inside-out mechanism in the formation of spi…
Chemical evolution models: the role of type Ia supernovae in the -elements over Iron relative abundances and their variations in time and space
O. Cavichia, M. Mollá, J. J. Bazán +6
The role of type Ia supernovae (SN Ia), mainly the Delay Time Distributions (DTDs) determined by the binary systems, and the yields of elements created by different explosion mecha…
The multi-zone chemical evolution of the Galactic bulge: predicting abundances for different radial zones
Oscar Cavichia, Mercedes Mollá, Juanjo J. Bazán
Due to its proximity, the stellar populations of the Galactic bulge (GB) can be resolved and can be studied in detail. This allows tracing the bulge metallicity distribution functi…
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…
A spectrophotometric study of planetary nebulae and HII regions in the M83 galaxy
Monique M. de Brito, Oscar Cavichia
Low and intermediate mass stars (0.8-8M) in the end of their evolution pass through a series of events of mass loss, which contributes for the enrichment of the interstellar…
The formation of the Galactic bulge in an inside-out scenario
O. Cavichia, M. Mollá
Chemical evolution models (CEM) are important tools to understand the formation and evolution of the components of the Milky Way Galaxy and other galaxies in the universe. The Gala…
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…
Modelling the formation of the galactic bulge
O. Cavichia, M. Mollá
In this work we have assumed a Hernquist model with an inside-out formation for the Galactic bulge and, using a chemical evolution model, we were able obtain the bulge metallicity…
Arm and interarm abundance gradients in CALIFA spiral galaxies
L. Sánchez-Menguiano, S. F. Sánchez, I. Pérez +23
Spiral arms are the most singular features in disc galaxies. These structures can exhibit different patterns, namely grand design and flocculent arms, with easily distinguishable c…
Abundances in photoionized nebulae of the Local Group and nucleosynthesis of intermediate mass stars
W. J. Maciel, R. D. D. Costa, O. Cavichia
Photoionized nebulae, comprising HII regions and planetary nebulae, are excellent laboratories to investigate the nucleosynthesis and chemical evolution of several elements in the…
Chemical abundances of photoionized nebulae in the Local Group
W. J. Maciel, R. D. D. Costa, O. Cavichia
Photoionized nebulae comprise basically HII regions and planetary nebulae, and their abundances give important clues on the nucleosynthesis and chemical evolution of their host gal…
The evolution of the radial gradient of Oxygen abundance in spiral galaxies
M. Mollá, A. I. Díaz, Y. Ascasibar +4
The aim of this work is to present our new series of chemical evolution models computed for spiral and low mass galaxies of different total masses and star formation efficiencies.…
The evolution of the Oxygen abundance radial gradient in the Milky Way Galaxy disk
M. Mollá, O. Cavichia, R. D. D Costa +3
We review the state of our chemical evolution models for spiral and low mass galaxies. We analyze the consequences of using different stellar yields, infall rate laws and star form…
Galactic Chemical Evolution
M. Mollá, O. Cavichia, R. da Costa +2
We analyze the evolution of oxygen abundance radial gradients resulting from our chemical evolution models calculated with different prescriptions for the star formation rate (SFR)…
Properties of the outer regions of spiral disks: abundances, colors and ages
Mercedes Mollá, Angeles I. Díaz, Brad K. Gibson +2
We summarize the results obtained from our suite of chemical evolution models for spiral disks, computed for different total masses and star formation efficiencies. Once the gas, s…
The role of gas infall in the evolution of disc galaxies
Mercedes Mollá, Ángeles I. Díaz, Brad K. Gibson +2
Spiral galaxies are thought to acquire their gas through a protracted infall phase resulting in the inside-out growth of their associated discs. For field spirals, this infall occu…
CALIFA, the Calar Alto Legacy Integral Field Area survey: IV. Third Public data release
S. F. Sánchez, R. García-Benito, S. Zibetti +60
This paper describes the Third Public Data Release (DR3) of the Calar Alto Legacy Integral Field Area (CALIFA) survey. Science-grade quality data for 667 galaxies are made public,…
Shape of the oxygen abundance profiles in CALIFA face-on spiral galaxies
L. Sánchez-Menguiano, S. F. Sánchez, I. Pérez +25
We measured the gas abundance profiles in a sample of 122 face-on spiral galaxies observed by the CALIFA survey and included all spaxels whose line emission was consistent with sta…
Radial abundance gradients from planetary nebulae at different distances from the galactic plane
W. J. Maciel, R. D. D. Costa, O. Cavichia
We investigate the variations of the radial O/H abundance gradients from planetary nebulae (PN) located at different distances from the galactic plane. In particular, we determine…
Galactic Chemical Evolution: Stellar Yields and the Initial Mass Function
Mercedes Mollá, Oscar Cavichia, Marta Gavilán +1
We present a set of 144 galactic chemical evolution models applied to a Milky Way analogue, computed using four sets of low and intermediate star nucleosynthetic yields, six massiv…
The role of the Galactic bar in the chemical evolution of the Milky Way
O. Cavichia, M. Mollá, R. D. D. Costa +1
In the absence of an interaction, central bars might be the most effective mechanism for radial motions of gas in barred spiral galaxies, which represent two-thirds of disc galaxie…
Planetary nebulae and the chemical evolution of the galactic bulge: new abundances of older objects
O. Cavichia, R. D. D. Costa, M. Mollá +1
In view of their nature, planetary nebulae have very short lifetimes, and the chemical abundances derived so far have a natural bias favoring younger objects. In this work, we repo…
Planetary nebulae in the inner Milky Way II: the Bulge-Disk transition
O. Cavichia, R. D. D. Costa, W. J. Maciel
In this work, a sample of planetary nebulae located in the inner-disk and bulge of the Galaxy is used in order to find the galactocentric distance which better separates these two…