Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986apj...303l..45d&link_type=abstract
Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 303, April 15, 1986, p. L45-L49.
Astronomy and Astrophysics
Astrophysics
47
Elliptical Galaxies, Galactic Rotation, Galactic Structure, Prolateness, Axes Of Rotation, Velocity Measurement
Scientific paper
Long-slit spectra for the E2 galaxy NGC 4261 show that its projected rotation axis lies only 6°±4° from its projected major axis. This observation suggests that the intrinsic figure of the galaxy is prolate: if the galaxy is oblate, then its rotation axis is almost perpendicular to its symmetry axis. The angular momentum vector of the stars may be parallel to either the shortest or the longest axis of the galaxy, so that NGC 4261 may be either a bar or a spindle.
Birkinshaw Mark
Davies Roger L.
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