Non-equilibrium motions in galaxies and gravitational redshift

Details Non-equilibrium motions in galaxies and gravitational redshift Non-equilibrium motions in galaxies and gravitational redshift

Jun 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993mnras.262l..51s&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 262, no. 3, p. L51-L54.

Astronomy and Astrophysics

Astronomy

10

Elliptical Galaxies, Galactic Rotation, Gravitational Effects, Red Shift, Galactic Nuclei, Radial Velocity, Velocity Distribution

Scientific paper

We have attempted to detect nonequilibrium motions in the cores of elliptical galaxies by separating radial velocity profiles into their odd and even components, the latter being zero in equilibrium Newtonian systems. Our sample of 24 objects has been assembled by considering published radial velocity profiles with error bars smaller than 10 km/s. We detect such motions for 13 objects, but, surprisingly, in 12 of these cases the core is redshifted with respect to the outer parts. Although most individual cases have only a limited statistical significance, the significance for the complete sample is 99.9 percent. We suggest that this systematic redshift of cores is a result of gravitational redshift.

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