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Stellar Kinematics for the Central Spheroid in the Polar Disk Galaxy NGC 4650A

Iodice, E; Arnaboldi, Magda; Saglia, R P; Sparke, L S; Gerhard, Ortwin; Gallagher, John S; Combes, F; Bournaud, F; Capaccioli, Massimo; Freeman, Kenneth

Description

We have obtained high angular resolution, high signal-to-noise ratio spectra of the calcium triplet absorption lines on the photometric axes of the stellar spheroid in the polar disk galaxy NGC 4650A. Along the major axis, the observed rotation and velocity dispersion measurements show the presence of a kinematically decoupled nucleus and a flat velocity dispersion profile. The minor-axis kinematics is determined for the first time: along this direction some rotation is measured, and the...[Show more]

CollectionsANU Research Publications
Date published: 2006
Type: Journal article
URI: http://hdl.handle.net/1885/23680
Source: Astrophysical Journal, The
DOI: 10.1086/501520

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