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Spatial kinematics of Brightest Cluster Galaxies and their close companions from Integral Field Unit spectroscopy

Brough, Sarah; Tran, Kim-Vy; Sharp, Robert; von der Linden, A; Couch, Warrick

Description

We present Integral Field Unit (IFU) spectroscopy of four brightest cluster galaxies (BCGs) at z ~ 0.1. Three of the BCGs have close companions within a projected radius of 20 kpc and one has no companion within that radius.We calculate the dynamical masses of the BCGs and their companions to be 1.4 × 1011 < Mdyn(M⊙) < 1.5 × 1012. We estimate the probability that the companions of the BCGs are bound using the observed masses and velocity offsets. We show that the lowest mass companion (1:4) is...[Show more]

CollectionsANU Research Publications
Date published: 2011
Type: Journal article
URI: http://hdl.handle.net/1885/78769
Source: Monthly Notices of the Royal Astronomical Society: Letters
DOI: 10.1111/j.1745-3933.2011.01060.x

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