Mass Loss and Evolution of O-Type Stars
P.S. Conti, C. de Loore
The organization of this Symposium had its beginnings at the International Astronomical Union General Assembly in Grenoble in 1976. The initial "rounding up" of the Scienti fic Organizing Committee was begun by Drs. Snow and Swings; most of us who became the eventual organizing committee met a few times during the Assembly and formulated the essential outlines of the meeting. Extensive correspondence with all the committee subsequently established the program. The idea was to bring together both observers and theoreticians to discuss the stellar winds and mass loss rates and their effects on evolutions of O-type stars. On the observational side, there are now spectroscopic data from the far UV to the near IR regions concerning the stellar winds. There is also information about the free-free emission in the wind from the IR and radio portions of the spectrum. Fortunately, these different detection methods give more or less the same mass loss rate for the one star, s Pup" which has been observed at all wavelengths. One of the intents of the first three sessions of this Symposium is to outline the eXisting data on mass loss rates as it per tains to the O-type stars.
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Contents
H alpha variations
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23 |
On the formation
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39 |
Stellar outflow relative motions
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55 |
Modelling of UV resonance lines 81
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63 |
0 VI in stellar winds
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93 |
Winds in hot subluminous stars
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99 |
Analysis
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109 |
INFRARED AND RADIO DATA
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117 |
The Ha profile in Zeta Puppis 249
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253 |
The Otype spectroscopic
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271 |
The spectroscopic binary
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287 |
F BISIACCHI L CARRASCO R COSTERO C FIRMANI
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301 |
Critical rates
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349 |
Supergiant mass loss and the Cassiopeia
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357 |
The role
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367 |
Mass conservation and rapid mass loss
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375 |
of O stars and related objects
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131 |
Infrared
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139 |
Radio emission from flows
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147 |
stars at two centimeters
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155 |
PANEL DISCUSSION ON STELLAR
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167 |
The warm wind model
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191 |
The thermodynamic requirements on
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214 |
THEORY AND MASS LOSS RATES
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235 |
common envelope binaries and mass loss 401
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400 |
Common envelope binaries and mass loss
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415 |
EVOLUTIONARY SCENARIO AND
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428 |
The galactic WN7WN8
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446 |
The chemical nature
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461 |
Observations of velocity fields in
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475 |
Summary of the conference
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491 |
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Common terms and phrases
Abbott absorption lines Ap.J Astron Astrophys atmosphere binary system C. W. H. de Loore calculations Cassinelli Castor Chiosi CIII close binaries component computations Conti and C. W. H. continuum convective Copyright 1979 core corona Cygni profiles density DISCUSSION FOLLOWING effective temperature emission lines Evolution of O-Type evolutionary tracks Figure flux He-burning helium HR diagram Hutchings hydrogen burning infrared initial mass ionization ions km/s Lamers Loore eds Loss and Evolution luminosity main sequence mass loss rates mass ratio massive stars Morton nebulae O-Type Stars OB stars observed orbital P. S. Conti parameters phase photospheric radial velocities radiation pressure radiative radio radius rate of mass region resonance lines Roche lobe rotation Snow spectral type spectroscopic spectrum stellar wind supergiants Teff terminal velocity thermal Underhill UW CMa values Vanbeveren variability velocity law wavelength wind model Wolf-Rayet stars WR stars X-ray binaries