|
1 Introduction
|
|
2 The photoionization models
|
|
3 The sample of blue compact galaxies confronted to the
model grid
|
|
4 Model predictions for the collisional excitation of hydrogen lines
|
|
5 The effect of H collisional excitation on the derived helium
abundances for a few selected blue compact galaxies
|
|
6 Conclusion and prospects
|
|
References
|