Integral Field Unit spectroscopy of Brightest Cluster Galaxies and their companions: Angular Momentum and Dynamical Mass

Details Integral Field Unit spectroscopy of Brightest Cluster Galaxies and their companions: Angular Momentum and Dynamical Mass Integral Field Unit spectroscopy of Brightest Cluster Galaxies and their companions: Angular Momentum and Dynamical Mass

Jan 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21933830e&link_type=abstract

American Astronomical Society, AAS Meeting #219, #338.30

Astronomy and Astrophysics

Astronomy

Scientific paper

Using the VIMOS Integral Field Unit (IFU) spectrograph on the Very Large Telescope, we are able to map the kinematics of 6 different Brightest Cluster Galaxies (BCGs). These galaxies are likely to have formed after many mergers and are some of the most massive galaxies we can study. Our sample of BCGs are found at redshifts ranging from z=0.04 to z=0.09. By using velocity dispersion, we are able to measure the dynamical masses for these BCGs, which are on the order of 1012 M&sun;. Using the SAURON λR parameter as a measurement of angular momentum, we find the unexpected result that several of the galaxies are strongly rotating, with λR as high as 0.5.

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