212 citations · 595 across the 13 of their papers we have counts for
8 papers · 1 filter
The chemical composition of metal-poor emission-line galaxies in the Data Release 3 of the Sloan Digital Sky Survey
Y. I. Izotov, G. Stasinska, G. Meynet +2
We have re-evaluated empirical expressions for the abundance determination of N, O, Ne, S, Cl, Ar and Fe taking into account the latest atomic data and constructing an appropriate…
Semi-empirical analysis of Sloan Digital Sky Survey galaxies: II. The bimodality of the galaxy population revisited
Abilio Mateus, Laerte Sodre, Roberto Cid Fernandes +3
We revisit the bimodal distribution of the galaxy population commonly seen in the local universe. Here we address the bimodality observed in galaxy properties in terms of spectral…
On the most metal-poor PN and its binary central star
R. Napiwotzki, G. Tovmassian, M. G. Richer +5
PN G135.9+55.9 is the most metal-poor PN known in our Galaxy. The central star resides in a short-period binary system with a compact component, probably a white dwarf. We describe…
NEBU_3D: A fast pseudo-3D photoionization code for aspherical planetary nebulae and HII regions
C. Morisset, G. Stasinska, M. Pena
We describe a pseudo-3D photoionization code, NEBU_3D and its associated visualization tool, VIS_NEB3D, which are able to easily and rapidly treat a wide variety of nebular geometr…
Spectral Synthesis of SDSS Galaxies
L. Sodre, R. Cid Fernandes, A. Mateus +2
We investigate the power of spectral synthesis as a mean to estimate physical properties of galaxies. Spectral synthesis is nothing more than the decomposition of an observed spect…
A VLT study of metal-rich extragalactic H II regions. I. Observations and empirical abundances
Fabio Bresolin, Daniel Schaerer, Rosa Gonzalez Delgado +1
We have obtained spectroscopic observations from 3600 Angstrom to 9200 Angstrom with FORS at the Very Large Telescope for approximately 70 H II regions located in the spiral galaxi…