664 citations · 2k across the 51 of their papers we have counts for
3 papers · 1 filter
Measurements of 4He in Metal-Poor Extragalactic HII Regions: the Primordial Helium Abundance and the Delta Y / Delta O Ratio
M. Peimbert, A. Peimbert, L. Carigi +1
We present a review on the determination of the primordial helium abundance Yp, based on the study of hydrogen and helium recombination lines in extragalactic HII regions. We also…
The distance to the C component of I Zw 18 and its star formation history: A probabilistic approach
Luc Jamet, Miguel Cervino, Valentina Luridiana +2
We analyzed the resolved stellar population of the C component of the extremely metal-poor dwarf galaxy Izw18 in order to evaluate its distance and star formation history as accura…
Properties of the ionized gas in HH202. II: Results from echelle spectrophotometry with UVES
A. Mesa-Delgado, C. Esteban, J. García-Rojas +5
We present results of deep echelle spectrophotometry of the brightest knot of the HH202 in the Orion Nebula --HH202-S-- using the ultraviolet Visual Echelle Spectrograph (UVES). Th…