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Resolving the Disc-Halo Degeneracy - II: NGC 6946

Aniyan, Suryashree; Ponomareva, Anastasia; Freeman, Kenneth; Arnaboldi, Magda; Gerhard, Ortwin; Coccato, L; Kuijken, Konrad; Merrifield, M R


The mass-to-light ratio (M/L) is a key parameter in decomposing galactic rotation curves into contributions from the baryonic components and the dark halo of a galaxy. One direct observational method to determine the disc M/L is by calculating the surface mass density of the disc from the stellar vertical velocity dispersion and the scale height of the disc. Usually, the scale height is obtained from near-IR studies of edge-on galaxies and pertains to the older, kinematically hotter stars in...[Show more]

CollectionsANU Research Publications
Date published: 2021
Type: Journal article
Source: Monthly Notices of the Royal Astronomical Society
DOI: 10.1093/mnras/staa3106
Access Rights: Open Access


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