9 citations · 11 across the 5 of their papers we have counts for
7 papers
Physical conditions in NGC 6543 from ISO and HST data and the pitfalls of temperature maps
V. Luridiana, E. Perez, M. Cervino
We determine the physical conditions in NGC 6543, obtaining two different estimates of the electron temperature (T_e) and one estimate of the electron density (N_e). The electron t…
Photoionization Models of Metal-poor Extragalactic HII Regions and the Primordial Helium Abundance
V. Luridiana, A. Peimbert, M. Peimbert
We discuss the effects of collisional enhancement of Balmer lines on the determination of the primordial helium abundance. To this aim, we present a photoionization model of the me…
Statistical Synthesis Models
M. Cervino, V. Luridiana
In this contribution we evaluate the minimal cluster mass for which the effects of an incomplete sampling of the Initial Mass Function (IMF) cannot be neglected. This minimal clust…
The primordial Helium abundance
V. Luridiana
The primordial abundance of 4He, Y_P, is one of the hottest themes in present-day astronomy, mostly due to its cosmological relevance. The disagreement between different determinat…
Chemical Abundances of NGC 5461 and NGC 5471 derived from Echelle Spectrophotometry
V. Luridiana, C. Esteban, M. Peimbert +1
We present high resolution spectroscopic data of the two giant extragalactic H II regions NGC 5461 and NGC 5471 in M101, which have been obtained with the 2.1-m telescope of the Ob…
Confidence levels of evolutionary synthesis models
M. Cervino, V. Luridiana, F. J. Castander
The stochastic nature of the IMF in young stellar clusters implies that clusters of the same mass and age do not present the same unique values of their observed parameters. Instea…