A quantitative analysis of the prototype [WCL] star CPD-56° 8032

Paul A. Crowther*, Orsola De Marco, M. J. Barlow, P. J. Storey

*Corresponding author for this work

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Abstract

We present a detailed, quantitative study of the standard [WC10] Wolf-Rayet central star CPD-56° 8032 based on new high resolution AAT UCLES observations and the Hillier (1990) WR standard model. Our analysis of CPD-56° 8032 gives the wind properties (T*=34 500K, lg (L/L) = 3.8, lg (Ṁ/Ma-1) = -5.4, υ = 225 km s-1) and chemistry (C/He=0.5, O/He=0.1, by number), the latter suggesting an intimate relationship with the O VI PN central stars and the PG 1159-035 objects. A comparison between the wind properties of CPD-56° 8032 and Sk-66° 40 (WN10) indicates that low excitation, low wind velocity WR winds are common to both low mass PN central stars (WC sequence) and high mass post-LBV's (WN sequence).

Original languageEnglish
Pages (from-to)119-123
Number of pages5
JournalAstrophysics and Space Science
Volume238
Issue number1
Publication statusPublished - 1996
Externally publishedYes

Keywords

  • Planetary nebulae: individual
  • Stars: Wolf-Rayet, mass loss, atmospheres

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    Crowther, P. A., De Marco, O., Barlow, M. J., & Storey, P. J. (1996). A quantitative analysis of the prototype [WCL] star CPD-56° 8032. Astrophysics and Space Science, 238(1), 119-123.