Scalloped disk galaxies - A Kelvin-Helmholtz instability?

Details Scalloped disk galaxies - A Kelvin-Helmholtz instability? Scalloped disk galaxies - A Kelvin-Helmholtz instability?

Jul 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...270..507f&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 270, July 15, 1983, p. 507-510. NASA-supported research.

Astronomy and Astrophysics

Astrophysics

3

Disk Galaxies, Galactic Structure, Kelvin-Helmholtz Instability, Milky Way Galaxy, Galactic Nuclei, Galactic Rotation, Wavelengths

Scientific paper

The scalloped outermost edge of the Galaxy may be driven by a
Kelvin-Helmholtz interface instability if the disk and halo components
of the Galaxy at large galactocentric distances do not corotate. The
range of unstable wavelengths is found to be 10 ⪉ Λ (kpc)
⪉ 23, in good agreement with the observed wavelength ≅ 19 kpc.

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