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

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

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

Research output: Contribution to journal › Article › peer-review

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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/M_⊙a^-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 language	English
Pages (from-to)	119-123
Number of pages	5
Journal	Astrophysics and Space Science
Volume	238
Issue number	1
Publication status	Published - 1996
Externally published	Yes

Keywords

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

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title = "A quantitative analysis of the prototype [WCL] star CPD-56° 8032",

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/M⊙a-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).",

keywords = "Planetary nebulae: individual, Stars: Wolf-Rayet, mass loss, atmospheres",

author = "Crowther, {Paul A.} and {De Marco}, Orsola and Barlow, {M. J.} and Storey, {P. J.}",

year = "1996",

language = "English",

volume = "238",

pages = "119--123",

journal = "Astrophysics and Space Science",

issn = "0004-640X",

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TY - JOUR

T1 - A quantitative analysis of the prototype [WCL] star CPD-56° 8032

AU - Crowther, Paul A.

AU - De Marco, Orsola

AU - Barlow, M. J.

AU - Storey, P. J.

PY - 1996

Y1 - 1996

N2 - 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/M⊙a-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).

AB - 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/M⊙a-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).

KW - Planetary nebulae: individual

KW - Stars: Wolf-Rayet, mass loss, atmospheres

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M3 - Article

AN - SCOPUS:0040798099

VL - 238

SP - 119

EP - 123

JO - Astrophysics and Space Science

JF - Astrophysics and Space Science

SN - 0004-640X

IS - 1

ER -

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

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Keywords

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