Abstract
The4He abundance of the Nova Delphini 1967 is determined, using their nebular stage spectra, which is of the order 0.18 by number and 0.39 by mass. Our results and similar measurements on other novae show that the4He abundance in novae is about twice the amount predicted by the Big-Bang theory. The binary structure is the main cause of4He overabundance in novae.
Similar content being viewed by others
References
Aller, L. H.: 1987,Physics of Thermal Gaseous Nebulae, D. Reidel Publ. Co., Dordrecht, Holland, p. 293.
Clegg, R. E. S.: 1987,Monthly Notices Roy. Astron. Soc. 229, 31P.
Collin-Soufrin, S.: 1977, in M. Friedjung (ed.),Novae and Related Stars, D. Reidel Publ. Co., Dordrecht, Holland, p. 123.
Ferland, G. J.: 1979,Astrophys. J. 231, 781.
Malakpour, I.: 1974,Astron. J. 88, 251.
Malakpour, I.: 1977,Astrophys. Space Sci. 47, 3.
Schramm, D. N. and Steigman, G.: 1988,Sci. Amer. 258(6), 44.
Seaton, M. J.: 1960,Monthly Notices Roy. Astron. Soc. 120, 327.
Seaton, M. J.: 1968,Adv. Atomic Molecular Phys. 4, 331.
Tylendan, R.: 1978,Acta Astron. 28, 333.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Malakpour, I. Helium abundance in Novae. Astrophys Space Sci 193, 47–50 (1992). https://doi.org/10.1007/BF01070199
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF01070199