Terminal velocity of wind, mass loss, and absorption lines of the central star of the planetary nebula 75 + 35. 1 deg
- NASA, Goddard Space Flight Center, Greenbelt, MD (USA) Catholic Univ. of America, Washington, DC (USA)
The high-galactic latitude planetary nebula 75 + 35.1 deg was observed in the high-dispersion mode of the International Ultraviolet Explorer (IUE) satellite in the wavelength range 1150-1950 A. The N V resonance doublet at 1240 A and O V subordinate line at 1371 A exhibit strong stellar P Cygni profiles with absorption extending to -2150 km/s and -1000 km/s, respectively. Application of the first moment method implies a mass-loss rate of M = (1-3) x 10 to the -8th solar mass/yr. The high ionization of the wind lines and the presence of strong Fe VI and Fe V lines in the stellar photosphere support that this object is quite hot. A Teff of 75,000 + or - 10,000 K was adopted, although Tc = 94,000 K was found previously from low-resolution IUE data. 18 refs.
- OSTI ID:
- 6967111
- Journal Information:
- Astrophysical Journal; (USA), Vol. 347; ISSN 0004-637X
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
GENERAL PHYSICS
PLANETARY NEBULAE
WHITE DWARF STARS
MASS TRANSFER
STELLAR WINDS
ABSORPTION SPECTRA
IONIZATION
SPECTRA
SPECTROSCOPY
STELLAR ATMOSPHERES
ULTRAVIOLET SPECTRA
ATMOSPHERES
DWARF STARS
NEBULAE
STARS
STELLAR ACTIVITY
640102* - Astrophysics & Cosmology- Stars & Quasi-Stellar
Radio & X-Ray Sources