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Date and Time of the Query: 2019-03-21 T09:11:04 PDT
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For refcode 2001MNRAS.326..473H:
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NED Abstract

Copyright by Royal Astronomical Society. 2001MNRAS.326..473H Line-of-sight velocity distributions of low-luminosity elliptical galaxies C. Halliday, Roger L. Davies, Harald Kuntschner, M. Birkinshaw, Ralf Bender, R.P. Saglia and Glenn Baggley Accepted 2001 March 7. Received 2000 December 21; in original form 2000 December 21 ABSTRACT The shape of the line-of-sight velocity distribution (LOSVD) is measured for a sample of 14 elliptical galaxies, predominantly low-luminosity ellipticals. The sample is dominated by galaxies in the Virgo cluster but also contains ellipticals in nearby groups and low-density environments. The parametrization of the LOSVD given by Gerhard and van der Marel & Franx is adopted, which measures the asymmetrical and symmetrical deviations of the LOSVD from a Gaussian by the amplitudes h_3_ and h_4_ of the Gauss-Hermite series. Rotation, velocity dispersion, h_3_ and h_4_ are determined as a function of radius for both major and minor axes. Non-Gaussian LOSVDs are found for all galaxies along the major axes. Deviations from a Gaussian LOSVD along the minor axis are of much lower amplitude if present at all. Central decreases in velocity dispersion are found for three galaxies. Two galaxies have kinematically decoupled cores: NGC 4458 and the well-known case of NGC 3608. Keywords: galaxies: elliptical and lenticular, cD - galaxies: formation - galaxies: kinematics and dynamics.
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