La abundancia primordial del Hielo

Abstract

THE FIRST STARS FORMED CONTAINED ONLY HYDROGEN AND HELIUM. THE OTHER ELEMENTS IN THE PERIODIC TABLE WERE FORMED FROM NUCLEAR REACTIONS IN THE STARS€™ INTERIOR. THIS ARTICLE PRESENTS THE RESULTS OF A STUDY OF HELIUM ABUNDANCE BY UNIT OF MASS, WHICH IS FUNDAMENTAL TO THE STUDY OF COSMOGONY AND THE CHEMICAL EVOLUTION OF GALAXIES