TY  - CHAP
A1  - Urbaneja, M. A.
A1  - Kudritzki, R.-P.
A1  - Puls, Joachim
T1  - Clumping in the winds of O-type CSPNs
N2  - Recent studies of massive O-type stars present clear evidences of inhomogeneous and clumped winds. O-type (H-rich) central stars of planetary nebulae (CSPNs) are in some ways the low mass–low luminosity analogous of those massive stars. In this contribution, we present preliminary results of our on-going multi-wavelength (FUV, UV and optical) study of the winds of Galactic CSPNs. Particular emphasis will be given to the clumping factors derived by means of optical lines (Hα and Heii 4686) and “classic” FUV (and UV) lines.
Y1  - 2007
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-17801
ER  - 
TY  - CHAP
A1  - Puls, Joachim
T1  - Discussion : X-rays
N2  - Clumping in hot-star winds : proceedings of an international workshop held in Potsdam, Germany, 18. - 22. June 2007
Y1  - 2007
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-18000
ER  - 
TY  - CHAP
A1  - Puls, Joachim
A1  - Markova, N.
A1  - Najarro, F.
A1  - Hanson, M. M.
T1  - Clumping in O-star winds
N2  - We review various diagnostics of clumping in O-star winds, with special emphasis on its radial stratification. Implications and problems are discussed, and promising NIR methods are presented.
Y1  - 2007
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-17683
ER  - 
TY  - CHAP
A1  - Najarro, F.
A1  - Puls, Joachim
A1  - Herrero, A.
A1  - Hanson, M. M.
A1  - Martín-Pintado, J.
A1  - Hillier, D. J.
T1  - Tracking the Clumping in OB Stars from UV to radio
N2  - We review different line and continua diagnostics from the UV to radio, which can be utilized to simultaneously constrain the clumping structure throughout the stellar wind of massive OB stars.
Y1  - 2007
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-17701
ER  - 
TY  - CHAP
A1  - Krtička, Jiri
A1  - Puls, Joachim
A1  - Kubát, Jiří
T1  - The influence of clumping on predicted O star wind parameters
N2  - We study the influence of clumping on the predicted wind structure of O-type stars. For this purpose we artificially include clumping into our stationary wind models. When the clumps are assumed to be optically thin, the radiative line force increases compared to corresponding unclumped models, with a similar effect on either the mass-loss rate or the terminal velocity (depending on the onset of clumping). Optically thick clumps, alternatively, might be able to decrease the radiative force.
Y1  - 2007
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-17969
ER  -