Minor-axis rotation in elliptical galaxies

Details Minor-axis rotation in elliptical galaxies Minor-axis rotation in elliptical galaxies

Jul 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989aj.....98..147j&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 98, July 1989, p. 147-165.

Astronomy and Astrophysics

Astronomy

64

Angular Velocity, Axes Of Rotation, Elliptical Galaxies, Galactic Rotation, Oblate Spheroids, Prolate Spheroids, Astronomical Photometry, Galactic Structure, Kinetic Energy

Scientific paper

Rotation velocities have been measured along the minor axes of 14 galaxies, all nominally classified E2, and along the major axes of 12 of these, with the goal of determining their degree of triaxiality. Two of these show no rotation along either axis at a level of 10 km/s. Two show so much rotation along their major axes that in spite of their E2 classification, it is suspected that they may be SOs. Of the remaining 10, five show no minor-axis rotation and four rotate more rapidly along their minor axes than along their major axes. While the sample is small, the data suggest that elliptical galaxies run the gamut from nearly oblate to nearly prolate.

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