Galactic ring nebulae associated with Wolf-Rayet stars. V. The stellar wind blown bubbles

Journal Article · Mon Mar 15 04:00:00 EST 1982 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/159767· OSTI ID:5201355

Treffers, R R; Chu, Y

Fabry-Perot observations at h..cap alpha.. and (O III) lambda5007 are presented for the Wolf-Rayet ring nebulae NGC 2359, NGC 6888, and the nebulae around MR 100. The measured expansion velocity of these nebuale are 18, 75, and 50 km s/sup -1/, respectively. The kinetic energy of the shells is 1% or less of the kinetic energy from the wind over the lifetime of the shell. This energy is more than a factor of 20 less than expected from the theory of stellar wind blown bubbles. The observed dynamics agrees better with the momentum conserving expansion than the adiabatic stage of wind driven expansion. The origin and role of density inhomogeneities are discussed.

• Research Organization: Astronomy Department, University of California, Berkeley
• OSTI ID: 5201355
• Journal Information: Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 254:2; ISSN ASJOA
• Country of Publication: United States
• Language: English

Related Subjects

640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BALMER LINES
CHARGED PARTICLES
EXPANSION
INTERFEROMETRY
IONS
MAIN SEQUENCE STARS
NEBULAE
OXYGEN IONS
SPECTRA
STARS
STELLAR WINDS
VISIBLE SPECTRA
WOLF-RAYET STARS