SIMBAD references

2002ApJS..138..285M - Astrophys. J., Suppl. Ser., 138, 285-296 (2002/February-0)

Sulfur, chlorine, and argon abundances in planetary nebulae. IIB. Abundances in a southern sample.


Abstract (from CDS):

We have undertaken a large spectroscopic survey of over 80 planetary nebulae with the goal of providing a homogeneous spectroscopic database between 3600 and 9600 Å, as well as a set of consistently determined abundances, especially for oxygen, sulfur, chlorine, and argon. In the current paper we calculate and report the S/O, Cl/O, and Ar/O abundance ratios for 45 southern planetary nebulae (predominantly type II), using our own recently observed line strengths published in a companion paper. One of the salient features of our work is the use of the near-IR lines of [S III] λλ9069, 9532 coupled with the [S III] temperature, to determine the S+2 ionic abundance. We find the following average abundances for these objects: S/O=0.011±0.0064, Cl/O=0.00031±0.00012, and Ar/O=0.0051±0.0020.

Abstract Copyright:

Journal keyword(s): ISM: Abundances - Nuclear Reactions, Nucleosynthesis, Abundances - ISM: Planetary Nebulae: General - Stars: Evolution

Status at CDS:  

Simbad objects: 45

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