The physical conditions in SwSt 1 - The central star and the nebula

Details The physical conditions in SwSt 1 - The central star and the nebula The physical conditions in SwSt 1 - The central star and the nebula

Aug 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987mnras.227..773d&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 227, Aug. 1, 1987, p. 773-782.

Astronomy and Astrophysics

Astronomy

26

Late Stars, Planetary Nebulae, Carbon, Chlorine, Electron Density (Concentration), Nitrogen, Oxygen, Stellar Mass Ejection, Stellar Spectra, Stellar Temperature, Sulfur

Scientific paper

The authors present new optical observations on SwSt 1. They estimate a reddening of E(B-V) = 0.41 mag and a distance D = 1.2±0.2 kpc to the nebula. From their data the authors derive an electron density of (1.0±0.2)×105 cm-3 and a temperature of 11400±500K. Carbon, nitrogen, oxygen, chlorine and sulphur are underabundant more or less by a factor of 2 with respect to the "cosmic" values. The central star has an effective temperature of 32000K and is losing mass at a rate of (6 - 7)×10-8M_sun;yr-1.

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