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Nuclear Brightness Profiles of Merger Remnants: Constraints on the Formation of Ellipticals by Mergers

1999/10/14 by Roeland P. van der Marel, R. P. van der Marel, van der Marel, R. P. +3
Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysics (astro-ph) #FOS: Physical sciences #Galaxies: Formation, Evolution, Phenomena #Gamma-ray bursts and supernovae #astro-ph

paper · pdf · doi:10.48550/arxiv.astro-ph/9910275

To appear in the proceedings of "Galaxy Dynamics: from the Early Universe to the Present", eds. F. Combes, G.A. Mamon and V. Charmandaris, ASP Conference Series; 4 pages, LaTeX with 2 PostScript figures, newpasp.sty included

arxiv created 1999/10/14 · openalex publication_date 1999/10/14 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We present preliminary results of an HST/NICMOS program to image merger remnants in the J, H and K bands. The nuclear brightness profiles for most sample galaxies are similar to those typical for elliptical galaxies, but some (including the well-studied NGC 3921 and 7252) have an unusually high luminosity density at small radii. This is consistent with the prediction of N-body simulations that gas flows to the center during a merger and forms new stars.

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