TNG50 stellar disks are grouped into four j-types from sAM surface density maps, revealing a redshift-dependent sequence from irregular to barred forms driven by gas content and V/σ.
Angular Momentum and Galaxy Formation Revisited: Effects of Variable Mass-to-light Ratios
3 Pith papers cite this work. Polarity classification is still indexing.
3
Pith papers citing it
abstract
We rederive the relation between the specific angular momentum j_* and the mass M_* of the stellar matter in galaxies of different morphological types. This is a revision of the j_*--M_* diagram presented in our recent comprehensive study of galactic angular momentum. In that work, we estimated j_* from kinematic and photometric data that extended to large radii and M_* from near-infrared luminosities L_K with an assumed universal mass-to-light ratio M_*/L_K. However, recent stellar population models show large variations in M_*/L_K correlated with B-V color. In the present work, we use this correlation to estimate M_*/L_K and hence M_* from the measured B-V and L_K. Our revised j_*--M_* diagram is similar to our previous one; both disk-dominated and elliptical galaxies follow nearly parallel sequences with j_* \propto M_*^\alpha\ and \alpha = 0.6 +/- 0.1. However, the offset between the sequences is now a factor of about 5, some 30% larger than before (and close to the offset found by Fall in 1983). Thus, our new results place even tighter constraints on the loss of specific angular momentum by galactic disks over their lifetimes.
fields
astro-ph.GA 3years
2026 3verdicts
UNVERDICTED 3representative citing papers
New JWST data on 23 galaxies at 0.5<z<1.7 show median dark matter fraction of 0.63 at effective radius with 0.2 dex scatter, and a mix of rising, flat, and falling rotation curves.
Review of state-of-the-art cosmological galaxy formation models for HI, molecular gas and radio continuum in preparation for SKA, advocating coordinated multi-scale simulations, forward modelling and AI emulators.
citing papers explorer
-
IllustrisTNG50 angular momentum maps: tracing the morpho-kinematic evolution of galaxies
TNG50 stellar disks are grouped into four j-types from sAM surface density maps, revealing a redshift-dependent sequence from irregular to barred forms driven by gas content and V/σ.
-
MSA-3D: Rotation Curves and Dark Matter Fractions at z~0.5-1.7 with JWST/NIRSpec
New JWST data on 23 galaxies at 0.5<z<1.7 show median dark matter fraction of 0.63 at effective radius with 0.2 dex scatter, and a mix of rising, flat, and falling rotation curves.
-
Cosmological Galaxy Formation Modelling in the Era of the Square Kilometre Array
Review of state-of-the-art cosmological galaxy formation models for HI, molecular gas and radio continuum in preparation for SKA, advocating coordinated multi-scale simulations, forward modelling and AI emulators.