A FUSE View of Winds from the Central Stars of Planetary Nebulae

Publications of the Astronomical Society of Australia

Martín A. Guerrero¹ 

[1] Gerardo Ramos-Larios

关键词: line: profiles;    planetary nebulae;    stars: winds;    outflows;    ultraviolet: stars;   

DOI  :  10.1071/AS09024

学科分类：天文学(综合)

来源: CSIRO

【 摘 要 】

Since the IUE satellite produced a vast collection of high-resolution UV spectra of the central stars of planetary nebulae (CSPNe), there has not been any further systematic study of the stellar winds of these stars. The high spectral resolution, sensitivity and large number of archival observations in the FUSE archive allow the study of the stellar winds of CSPNe in the far-UV domain where lines of species spanning a wide excitation range can be observed. We present here a preliminary analysis of the P Cygni profiles of a sample of ∼60 CSPNe observed by FUSE. P Cygni profiles providing evidence for fast stellar winds with velocities between 200 and 4300 km s−1 have been found in 40 CSPNe. In many cases, this is the first time that fast stellar winds have been reported for these planetary nebulae (PNe). A detailed study of these far-UV spectra is on-going.

【 授权许可】

Unknown