Abstract
view Abstract Citations (4) References (22) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Hydrodynamic Cooling Effects in Ionized Stellar Winds Frank, Adam ; Noriega-Crespo, Alberto ; Balick, Bruce Abstract The calculation of ionized nonisothermal steady supersonic stellar winds is reported. It is argued that for nebulae created by the outflow of winds from a central star, mechanical cooling can dominate the energy budget, much as is the case for supernovae. It is shown that for reasonable mass loss rates (not greater than 10 exp -7 solar mass/yr), the mechanical cooling due to expansion can cause the temperature in the wind to drop dramatically. It is suggested that the cooling due to expansion is both observationally testable and significant. In cases where high excitation lines and nebular forbidden lines are remarkably weak (i.e., Sharpless 266), evidence of outflow velocities of approximately 20 km/s may be indicated. Publication: The Astronomical Journal Pub Date: August 1992 DOI: 10.1086/116278 Bibcode: 1992AJ....104..841F Keywords: Cooling Flows (Astrophysics); H Ii Regions; Hydrodynamic Equations; Ionized Gases; Planetary Nebulae; Stellar Winds; Computational Astrophysics; Forbidden Bands; Stellar Mass Ejection; Stellar Spectra; Astrophysics; HII REGIONS; PLANETARY NEBULA: GENERAL; ISM: KINEMATICS AND DYNAMICS full text sources ADS |
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