Studying Dynamical Models of the Core Galaxy NGC 1399 with Merging Remnants

Abstract

An investigation on the possible dynamical models of the core galaxy NGC 1399 is performed. Because early-type galaxies are likely to be formed through merging events, remnant rings are considered in the modeling process. A numerical survey over three parameters is employed to obtain the best-fit models that are completely consistent with observations. It is found that the inner slope of dark matter profile is a cuspy one for this core galaxy. The existence of remnant rings in best-fit models indicates a merging history. The remnant ring explains the flatten surface brightness, and thus could be the physical counterpart of the core structure of NGC 1399.

23 pages, accepted by RAA, the remnant ring proposed here might be traced by the dust rings modeled in arXiv:1804.10207

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Cited by in corpus (1)

• Tensorial solution of the Poisson equation and the dark matter amount and distribution of UGC 8490 and UGC 9753