Evidence for dynamical subsystems in elliptical galaxies

Details Evidence for dynamical subsystems in elliptical galaxies Evidence for dynamical subsystems in elliptical galaxies

Jul 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...330l..87j&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 330, July 15, 1988, p. L87-L91.

Mathematics

Dynamical Systems

108

Absorption Spectra, Dynamical Systems, Elliptical Galaxies, Galactic Rotation, Angular Velocity, Astronomical Photometry, Charge Coupled Devices, Dynamic Characteristics, Line Spectra

Scientific paper

Observations of the absorption-line kinematics of three elliptical galaxies whose photometric properties show no indication of any peculiarities are reported. In each case, it is found that the major-axis rotation curves in the inner parts are very different in character from those outside. It is suggested that the anomalous dynamical properties are due to the ingestion of smaller, more compact companions, leaving a kinematic signature even when no photometric evidence might be present.

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