Modeling Asymmetric and Lopsided Galaxy Disks

Details Modeling Asymmetric and Lopsided Galaxy Disks Modeling Asymmetric and Lopsided Galaxy Disks

Sep 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999dda....31.0508l&link_type=abstract

American Astronomical Society, DDA meeting #31, #05.08

Astronomy and Astrophysics

Astronomy

Scientific paper

Lopsidedness is common in both dwarf galaxies and large spiral galaxies. Asymmtries are usually seen in the displacement of the bright inner parts of the disk with respect to the outermost isophotes, and are particularly common in small low-luminosity galaxies. If the galaxy has an extended dark halo with a soft core, and the disk rotation is retrograde relative to the disk's orbit in the halo, then a bulk asymmetry can survive for an extended period. The observational consequences include asymmetries in the distribution of light, and in the velocity fields of the stars and gas.

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