Astronomy and Astrophysics – Astrophysics
Scientific paper
Nov 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994a%26a...291..743h&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 291, no. 3, p. 743-753
Astronomy and Astrophysics
Astrophysics
43
Galactic Evolution, Galactic Halos, Gas Dynamics, Interacting Galaxies, Kinematics, Magellanic Clouds, Orbital Mechanics, Boundary Value Problems, Equations Of Motion, Gravitation, Intergalactic Media, Kinetic Friction, Mass Distribution
Scientific paper
Orbital parameters of the magellanic cloud system describing it as a binary system of large magellanic cloud (LMC) and small magellanic cloud (SMC) that remained stable for the last 1010 years have been determined. All these orbits resulted in a close collision of LMC and SMC about 5 x 108 years ago which occurred at an orbital position which projects into a position close to the tip of the Magellanic Stream on the sphere. Gas clouds of LMC and SMC which then collided are now found in the bridge region of the intercloud area enclosing both clouds. Gas-dynamical interactions with the galactic halo extracts gas from the bridge region and now forms the Magellanic Stream. Due to the friction the orbital velocity of the stream is slowed down so that it sags towards the galactic center, the tip now having a galactocentric distance half of that of the Magellanic Clouds.
Heller P.
Rohlfs Kristen
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