SIMBAD references

2010ApJ...724..267F - Astrophys. J., 724, 267-284 (2010/November-3)

Optical IFU observations of the brightest cluster galaxy NGC 4696: the case for a minor merger and shock-excited filaments.


Abstract (from CDS):

We present deep optical integral-field spectroscopic observations of the nearby (z ∼ 0.01) brightest cluster galaxy NGC 4696 in the core of the Centaurus Cluster, made with the Wide Field Spectrograph on the Australian National University 2.3 m telescope at Siding Spring Observatory. We investigate the morphology, kinematics, and excitation of the emission-line filaments and discuss these in the context of a model of a minor merger. We suggest that the emission-line filaments in this object have their origin in the accretion of a gas-rich galaxy and that they are excited by v ∼ 100-200 km/s shocks driven into the cool filament gas by the ram pressure of the transonic passage of the merging system through the hot halo gas of NGC 4696.

Abstract Copyright:

Journal keyword(s): galaxies: elliptical and lenticular, cD - galaxies: individual: NGC 4696 - galaxies: interactions - galaxies: ISM - shock waves - techniques: imaging spectroscopy

Simbad objects: 18

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