W. J. Maciel -
Abstract #38
NEW RESULTS ON THE DETERMINATION OF THE PREGALACTIC HELIUM ABUNDANCE
W. J. Maciel, C. C. M. Leite
Rev. Mexicana Astron. Astrofis. 21, 197-201 (1990) A sample containing 58 objects comprising blue compact galaxies, galactic HII regions, and planetary nebulae is considered in order to determine the pregalactic helium abundance Yp and the enrichment ratio of helium relative to heavy elements dY/dZ.
