The complex wind of the central star of the planetary nebula Abell 78

Details The complex wind of the central star of the planetary nebula Abell 78 The complex wind of the central star of the planetary nebula Abell 78

Jan 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...324..528k&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 324, Jan. 1, 1988, p. 528-537.

Astronomy and Astrophysics

Astrophysics

17

Planetary Nebulae, Spectral Line Width, Stellar Mass Ejection, Stellar Spectrophotometry, Stellar Winds, Ultraviolet Spectra, Absorption Spectra, Density Distribution, Iue, Mass Flow Rate, Wind Velocity

Scientific paper

The authors have observed with the high-dispersion camera of the IUE the broad P Cygni profiles of C IV, N V, and O V that arise from Abell 78's nucleus. They find a terminal velocity to the wind that is close to 3670±30 km s-1, a positive velocity gradient, and an approximate mass loss rate of ≡4×10-9M_sun;yr-1. Superposed upon these high-velocity features are low-velocity absorption lines that may arise from a density enhancement in the wind as it brakes and builds up against the inner edge of the nebula.

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