Mapping the dark matter of NGC 2974: Combination of stellar & cold gas kinematics. Issue Volume 14:Issue S353(2019) (June 2019)

• Record Type: Journal Article
• Authors: Yang, M.; Zhu, L.; Weijmans, A.; van de Ven, G.; Boardman, N. F.; Morganti, R.; Oosterloo, T. A.
• Editors: Valluri, Monica; Sellwood, J. A.
• Is Part Of: Proceedings of the International Astronomical Union. Volume 14:Issue S353(2019)
• Page Start: 253
• Page End: 254
• Publication Date: 2019-06
• Subjects: galaxies: structure, -- galaxies: kinematics and dynamics, -- galaxies: halos, -- dark matter; Astronomy -- Congresses; Astronomy -- Periodicals; 520
• DOI: 10.1017/S1743921319008287
• Languages: English
• ISSNs: 1743-9213

Abstract

Abstract: We present a new method to combine cold gas kinematics with the stellar kinematics modelled with the Schwarzschild orbit-superposition technique, and its application to the lenticular galaxy NGC 2974. The combination of stellar and cold gas kinematics significantly improves the constraints on the measured dark matter profile: assuming a generalised NFW halo profile, we find a cuspy inner halo slope for NGC 2974.