TY - JOUR
T1 - 22Na and 26Al production in nova outbursts
AU - Starrfield, Sumner
AU - Truran, J. W.
AU - Politano, M.
AU - Sparks, W. M.
AU - Nofar, I.
AU - Shaviv, G.
N1 - Funding Information:
We are grateful to a number of our colleagues for valuable discussions and assistance. We would especially like to thank S. Shore and G. Sonneborn for allowing us to display IUE spectra of Nova Her 1991 prior to publication and providing us with the programs that prepared the montage of spectra. S. Starrfield is grateful to G. Wasserburg for a number of useful discussions and continuing encouragement. We would also like to thank P. Hauschildt, J. Krautter, C. Shrader, and R. Wehrse for their help. This work was supported in part by NSF and NASA grants to the University of Illinois and Arizona State University and by the DOE.
PY - 1993/5
Y1 - 1993/5
N2 - The consequences of accretion of hydrogen rich material onto ONeMg white dwarfs with masses of 1.0, 1.25, and 1.35 M⊙ are examined. Our results demonstrate that novae produce both 22na and 26Al in astrophysically interesting amounts. Hot hydrogen burning on ONeMg white dwarfs can produce as much as 2% of the ejected material as 26Al and 3% as 22Na. The largest amount of 22Na is produced by the highest mass ONeMg white dwarf nova systems which are predicted to be the fastest and most luminous of all types of nova. The largest amount of 26Al is produced in the lowest mass white dwarfs, which according to our evolutionary calculations, should eject the largest amount of material. In support of this prediction, the observations of QU Vul, a slow ONeMg nova, indicate that it has ejected about 10-3 M⊙. However, such a large amount of ejected mass is inconsistent with a typical ONeMg white dwarf mass > 1.25 M⊙.
AB - The consequences of accretion of hydrogen rich material onto ONeMg white dwarfs with masses of 1.0, 1.25, and 1.35 M⊙ are examined. Our results demonstrate that novae produce both 22na and 26Al in astrophysically interesting amounts. Hot hydrogen burning on ONeMg white dwarfs can produce as much as 2% of the ejected material as 26Al and 3% as 22Na. The largest amount of 22Na is produced by the highest mass ONeMg white dwarf nova systems which are predicted to be the fastest and most luminous of all types of nova. The largest amount of 26Al is produced in the lowest mass white dwarfs, which according to our evolutionary calculations, should eject the largest amount of material. In support of this prediction, the observations of QU Vul, a slow ONeMg nova, indicate that it has ejected about 10-3 M⊙. However, such a large amount of ejected mass is inconsistent with a typical ONeMg white dwarf mass > 1.25 M⊙.
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U2 - 10.1016/0370-1573(93)90067-N
DO - 10.1016/0370-1573(93)90067-N
M3 - Article
AN - SCOPUS:0000477792
SN - 0370-1573
VL - 227
SP - 223
EP - 234
JO - Physics Reports
JF - Physics Reports
IS - 1-5
ER -