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Gamma-ray constraints on Na-22 yields in nova explosionsThe longitudinal distribution of diffuse 1.275 MeV emission produced by the decay of interstellar Na-22 generated by a limited class of energetic novae-accreting ONeMg white dwarfs is modeled. The probability distributions for the locations of disk novae are derived as functions of Galactocentric cylindrical coordinates. The occurrence rate for novae of all classes in the Galactic disk is about 30/yr. An occurrence rate of about 16/yr is found for spheroid novae of all classes. By comparing these simulation results with HEAO 3 upper limits on diffuse 1.275 MeV emission, upper limits of (3-5.6) x 10 to the -7th solar mass are determined for the mean Na-22 yield for energetic novae generated by accreting ONeMg white dwarfs. These Na-22 limits constrain future models of explosive nucleosynthesis in energetic nova explosions.
Document ID
19870057343
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Higdon, J. C.
(California Institute of Technology Jet Propulsion Laboratory, Pasadena, United States)
Fowler, William A.
(California Institute of Technology Pasadena, United States)
Date Acquired
August 13, 2013
Publication Date
June 15, 1987
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 317
ISSN: 0004-637X
Subject Category
Astrophysics
Accession Number
87A44617
Funding Number(s)
CONTRACT_GRANT: NSF PHY-82-15500
Distribution Limits
Public
Copyright
Other

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