SIMBAD references

2008ApJ...682L.105O - Astrophys. J., 682, L105-L108 (2008/August-1)

Detection of fluorine in the halo planetary nebula BoBn 1: evidence for a binary progenitor star.


Abstract (from CDS):

We have found the fluorine lines [F IV] λλ3996.92, 4059.90 in the extremely metal-poor ([Ar/H] = -2.10±0.21) halo planetary nebula (PN) BoBn 1 in high-dispersion spectra from the 8.2 m VLT UVES archive. Chemical abundance analysis shows that the fluorine abundance is [F/H] = +1.06±0.08, making BoBn 1 the most fluorine-enhanced and metal-poor PN among fluorine-detected PNe and providing new evidence that fluorine is enhanced by nucleosynthesis in low-mass metal-poor stars. A comparison with the abundances of carbon-enhanced metal-poor (CEMP) stars suggests that BoBn 1 shares their origin and evolution with CEMP-s stars such as HE 1305+0132. BoBn 1 might have evolved from a binary consisting of ∼2 M primary and ∼0.8 M secondary stars.

Abstract Copyright:

Journal keyword(s): ISM: Abundances - planetary nebulae: individual (BoBn 1)

Simbad objects: 19

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