Modeling Lopsided Galactic Disks

Details Modeling Lopsided Galactic Disks Modeling Lopsided Galactic Disks

Dec 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aas...191.7703l&link_type=abstract

American Astronomical Society, 191st AAS Meeting, #77.03; Bulletin of the American Astronomical Society, Vol. 29, p.1332

Astronomy and Astrophysics

Astronomy

1

Scientific paper

Many disk galaxies are lopsided: their brightest inner parts are displaced from the center of the outer isophotes, or the outer contours of the Hi disk. This asymmetry is particularly common in small, low-luminosity galaxies. We argue here that long-lived lopsidedness is a consequence of the disk lying off-center in the potential of the galaxy's extended dark halo, and spinning in a sense retrograde to its orbit about the halo center. The predicted stellar velocity field is clearly asymmetric.

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