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NIHAO XIII: Clumpy discs or clumpy light in high redshift galaxies?
Tobias Buck, Andrea V. Macciò, Aura Obreja +3
Many massive star forming disc galaxies in the redshift range 3 to 0.5 are observed to have a clumpy morphology showing giant clumps of size 1 kpc and masses of about $10^7M_…
NIHAO XII: galactic uniformity in a ΛCDM universe
Aaron A. Dutton, Aura Obreja, Liang Wang +7
We use a sample of 83 high-resolution cosmological zoom-in simulations and a semi-analytic model (SAM) to study the stochasticity of galaxy formation in haloes ranging from dwarf t…
Dark-Matter Halo Profiles of a General Cusp/Core with Analytic Velocity and Potential
Avishai Dekel, Guy Ishai, Aaron A. Dutton +1
We present useful functions for the profiles of dark-matter (DM) haloes with a free inner slope, from cusps to cores, where the profiles of density, mass-velocity and potential are…
A spiral galaxy's mass distribution uncovered through lensing and dynamics
Wilma H. Trick, Glenn van de Ven, Aaron A. Dutton
We investigate the matter distribution of a spiral galaxy with a counter-rotating stellar core, SDSS J1331+3628 (J1331), independently with gravitational lensing and stellar dynami…
NIHAO XI: Formation of Ultra-Diffuse Galaxies by outflows
Arianna Di Cintio, Chris B. Brook, Aaron A. Dutton +3
We address the origin of Ultra-Diffuse Galaxies (UDGs), which have stellar masses typical of dwarf galaxies but effective radii of Milky Way-sized objects. Their formation mechanis…
NIHAO X: Reconciling the local galaxy velocity function with Cold Dark Matter via mock HI observations
Andrea V. Macciò, Silviu M. Udrescu, Aaron A. Dutton +4
We used 87 high resolution hydrodynamical cosmological simulations from the NIHAO suite to investigate the relation between the maximum circular velocity (Vmax) of a dark matter ha…