New results on 26Al production in classical novae

Details New results on 26Al production in classical novae New results on 26Al production in classical novae

1997-01-23

arxiv.org/abs/astro-ph/9701181v1

Astrophys.J.479:L55-L58,1997

Astronomy and Astrophysics

Astrophysics

Accepted for publication in ApJ Letters (16 pages, 1 figure, aasms4)

Scientific paper

10.1086/310575

The production of 26Al by explosions of classical novae has been computed by means of a hydrodynamic code that follows both the accretion and the explosion stages. A special emphasis has been put on the analysis of the influence of the initial abundances of the accreted envelope, as well as on the nuclear reaction rates involved. With the most recent values of chemical composition and reaction rates available, 26Al production is lowered with respect to previous computations. According to our results, the final contribution of novae to the galactic 26Al is at most 0.4 M_sun, which is a small part of the estimated 26Al in the Galaxy derived from COMPTEL observations of the 1809 keV emission.

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