Black Hole Masses and the Merger of High Velocity Dispersion Galaxy NGC6861 with NGC6868 in the AS0851 Galaxy Group

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Scientific paper

We propose to probe the connection between the shape of the high mass end of the black hole scaling relations and galaxy interactions, AGN feedback, and black hole growth using ACIS-I X-ray observations of the merger of high velocity dispersion galaxy NGC6861 with NGC6868 in the AS0851 galaxy group. We will measure the temperature rise in the inner 300 pc of NGC6861 to investigate the mass of its central black hole and test the black hole mass - velocity dispersion correlation. We will measure temperatures and densities across cold fronts, shocks, tails and cavities to constrain the orbital parameters, dynamical forces and AGN feedback in the merger of NGC681 with NGC6868 to resolve the order of magnitude discrepancy between the black hole scaling relations for NGC6861.

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