摘要：In a Λ CDM Universe, the specific stellar angular momentum (j*) and stellar mass (M*) of a galaxy are correlated as a consequence of the scaling existing for dark matter haloes (jh∝2∕3). The shape of this law is crucial to test galaxy formation models, which are currently discrepant especially at the lowest masses, allowing to constrain fundamental parameters, such as, for example, the retained fraction of angular momentum. In this study, we accurately determine the empiricalj*−M*relation (Fall relation) for 92 nearby spiral galaxies (from S0 to Irr) selected from theSpitzerPhotometry and Accurate Rotation Curves (SPARC) sample in the unprecedented mass range 7 ≲ logM*∕M⊙≲ 11.5. We significantly improve all previous estimates of the Fall relation by determiningj*profiles homogeneously for all galaxies, using extended HIrotation curves, and selecting only galaxies for which a robustj*could be measured (convergedj*(
关键词：Key wordsengalaxies: kinematics and dynamicsgalaxies: spiralgalaxies: structuregalaxies: formation
