A New Algorithm to Quantify Maximum Discs in Galaxies

Understand

Maximum disc decompositions of rotation curves place a dynamical upper limit to the mass attributable to stars in galaxies.

• The precise definition of this term, however, can be vague and varies in usage.
• We develop an algorithm to robustly quantify maximum-disc mass models and apply it to 153 galaxies from the SPARC database.
• Our automatic procedure recovers classic results from manual decompositions.