Abstract
view Abstract Citations (108) References (23) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS A stellar-wind focusing mecanism as an explanation for Herbig-Haro objects. Canto, J. ; Rodriguez, L. F. Abstract The steady state solution for the interaction of an isotropic stellar wind with a homogeneous, isothermal nebular environment is a spherical cavity, filled by unshocked stellar wind, and bounded by a shock. The radius of the shock is determined by the condition of balance between the ram pressure of the wind and the ambient gas pressure. In this paper, the interaction of an isotropic stellar wind with a nebular environment having a pressure gradient is considered. This situation is expected to apply for recently formed stars located at the edge of a dark cloud. The resulting static configurations are ovoid-shaped cavities with the star located near the tip closer to the high-density region. The stellar wind suffers a first shock against the oblique walls of the configuration and is refracted in the form of an annular stream toward the distant tip of the cavity. At this point a second shock occurs when the stream is forced to move away from the star. Upon cooling, this gas radiates with the characteristic parameters of an HH object. This model is applied to HH 1 and found to account satisfactorily for the observations. Publication: The Astrophysical Journal Pub Date: August 1980 DOI: 10.1086/158186 Bibcode: 1980ApJ...239..982C Keywords: Astrophysics; Celestial Mechanics; Herbig-Haro Objects; Stellar Winds; Focusing; Nebulae; Shock Waves; Space Density; Astrophysics full text sources ADS | data products SIMBAD (3)
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