Astronomy and Astrophysics – Astrophysics
Scientific paper
2003-06-09
Astrophys.J. 595 (2003) 1148-1153
Astronomy and Astrophysics
Astrophysics
9 pages, 1 figure; Accepted for publication in the Astrophysical Journal
Scientific paper
10.1086/377449
We present a new abundance analysis of the super Li-rich star J37 and a comparison star in NGC 6633. We confirm the result of Deliyannis et al. that J37 has a Li abundance well above the meteoritic value, and we also confirm that Al, S, Si, Ca, Fe and Ni are super-solar, and C is sub-solar. We additionally find that Na, Sc, Ti are super-solar, while O is sub-solar. The abundance pattern of metals in J37 is generally consistent with the bulk composition of the Earth. We propose that accretion of circumstellar matter is the best explanation for these abundance anomalies, although we cannot rule out a secondary contribution from diffusion.
González Gabriel
Laws Chris
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