Modeling the Mass Distribution in the Spiral Galaxy NGC 3198

5th Young Researcher Meeting, Trieste 2014

Karukes, E.V.^1,2 ; Salucci, P.^1,2

SISSA/ISAS, International School for Advanced Studies, Via Bonomea 265, Trieste

34136, Italy^1

INFN, Sezione di Trieste, Via Valerio 2, Trieste

34127, Italy^2

关键词: Dark matter;    Mass distribution;    Rotation curves;    Spiral galaxies;    Stellar disks;    Universal rotations;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/566/1/012008/pdf
DOI  :  10.1088/1742-6596/566/1/012008

来源: IOP

【 摘 要 】

We study the HI Rotation Curve of the spiral galaxy NGC 3198 in terms of mass decomposition. We model the Rotation Curve in the framework of different models for the Dark Matter distribution: the Burkert profile and NFW profile. We show that Universal Rotation Curve (Burkert halo+stellar disk+gas disk) fits data accurately. Instead, the NFW (NFW halo+stellar disk+gas disk) model gives non-physical values of NFW halo parameters.