On the shape of expanding supershells of neutral hydrogen
This paper draws attention to a feature of the ''supershells'' of neutral hydrogen, namely, the elongation of most of the expanding shells in the plane of the Galaxy, to propose a qualitative explanation of this fact in the framework of the model of a ''detonation'' wave of star formation sustained by a cascade of supernova explosions. The paper also aims to establish a possible connection between the observed shapes of the shells and the mechanisms of their formation. It is shown that in the case of a cascade of supernova explosions propagating in the galactic disk all shells with characteristic radii exceeding a critical value Z /sub c/ must be elongated along the plane of the Galaxy. Objects elongated in the direction perpendicular to this plane or spherical objects with radii exceeding Z /sub c/ must be due to other mechanisms.
- Research Organization:
- Principal Astronomical Observatory, Ukranian Academy of Sciences
- OSTI ID:
- 5446251
- Journal Information:
- Astrophysics (Engl. Transl.); (United States), Vol. 22:3
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
GENERAL PHYSICS
COSMIC GASES
EXPANSION
HYDROGEN
SUPERNOVAE
COSMOLOGICAL MODELS
STAR EVOLUTION
DETONATION WAVES
ELONGATION
EXPLOSIONS
GALACTIC EVOLUTION
SHAPE
SHOCK WAVES
SUPERNOVA REMNANTS
WAVE PROPAGATION
COSMIC RADIO SOURCES
ELEMENTS
ERUPTIVE VARIABLE STARS
FLUIDS
GASES
MATHEMATICAL MODELS
NONMETALS
STARS
VARIABLE STARS
640102* - Astrophysics & Cosmology- Stars & Quasi-Stellar
Radio & X-Ray Sources