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The Magellanic Stream and the Density of Coronal Gas in the Galactic Halo
2000
Astrophysical Journal
The properties of the Magellanic Stream constrain the density of coronal gas in the distant Galactic halo. We show that motion through ambient gas can strongly heat Stream clouds, driving mass loss and causing evaporation. If the ambient gas density is too high, then evaporation occurs on unreasonably short timescales. Since heating dominates drag, tidal stripping appears to be responsible for producing the Stream. Requiring the survival of the cloud MS IV for 500 Myr sets an upper limit on the
doi:10.1086/312462
pmid:10622760
fatcat:mfd52geruvdkpnxqb23gevtnjq