Bar formation in disk galaxies, and the normalized angular momentum of the bulge

Details Bar formation in disk galaxies, and the normalized angular momentum of the bulge Bar formation in disk galaxies, and the normalized angular momentum of the bulge

Oct 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985pazh...11..658z&link_type=abstract

(Pis'ma v Astronomicheskii Zhurnal, vol. 11, Sept. 1985, p. 658-663) Soviet Astronomy Letters (ISSN 0360-0327), vol. 11, Sept.-O

Astronomy and Astrophysics

Astronomy

Angular Momentum, Barred Galaxies, Disk Galaxies, Galactic Bulge, Galactic Evolution, Galactic Rotation, Galactic Structure, Astrodynamics, Spheroids

Scientific paper

The proposal of Polyachenko et al. (1971) that the spheroidal component of a galaxy will be triaxial, and will develop a bar if it possesses a high normalized angular momentum is compared with observations. It is shown that the Polyachenko proposal is consistent with bulge rotational velocities observed in disk-type systems. The bar presumably represented a bulge component having a high mass. The method of evaluating the relative mass of a bar is briefly discussed, and a two-stage evolutionary history of the spheroidal part of an SB galaxy is suggested.

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