Hα luminosity function of H II regions: preliminary calibration of a powerful standard candle
We propose the use of the H II region luminosity function (LF) as a refined powerful standard candle for extragalactic distances. We have found evidence of a change in the properties of H II regions in spirals at a fixed luminosity in Hα which we term the Strömgren luminosity (LHα = 3.39×1038 erg s-1). The key piece of evidence is the presence in
Rozas, Maite et al.
Fecha de publicación:
0
2002