3 papers
astro-ph2006
The metallicity of circumnuclear star forming regions
A. I. Diaz, E. Terlevich, M. Castellanos +1
We present a spectrophotometric study of circumnuclear star forming regions (CNSFR) in the early type spiral galaxies: NGC 2903, NGC 3351 and NGC 3504, all of them of over solar me…
astro-ph2001
On the large escape of ionizing radiation from GEHRs
M. Castellanos, A. I. Diaz, G. Tenorio-Tagle
A thorough analysis of well studied giant HII regions on galactic discs for which we know the ionizing stellar population, the gas metallicity and the Wolf-Rayet population, leads…
astro-ph2000
Models for the interpretation of CaT and the blue Spectral Indices in Elliptical Nuclei
M. Molla, M. L. Garcia-Vargas
We present a grid of theoretical models where the calculation of absorption line spectral indices in both the blue and red wavelength ranges is done with the same evolutionary synt…