Baryonic solutions and challenges for cosmological models of dwarf galaxies

LV Sales, A Wetzel, A Fattahi - Nature Astronomy, 2022‏ - nature.com
Galaxies and their dark-matter haloes have posed several challenges to the dark energy
plus cold dark matter (Λ CDM) cosmological model. These discrepancies between …

Observational constraints on stellar feedback in dwarf galaxies

MLM Collins, JI Read - Nature astronomy, 2022‏ - nature.com
Feedback to the interstellar medium from ionizing radiation, stellar winds and supernovae is
central to regulating star formation in galaxies. Owing to their low mass (< 109 solar …

No need for dark matter: resolved kinematics of the ultra-diffuse galaxy AGC 114905

PE Mancera Piña, F Fraternali… - Monthly Notices of …, 2022‏ - academic.oup.com
We present new H i interferometric observations of the gas-rich ultra-diffuse galaxy AGC
114905, which previous work, based on low-resolution data, identified as an outlier of the …

Self-interacting dark matter can explain diverse galactic rotation curves

A Kamada, M Kaplinghat, AB Pace, HB Yu - Physical review letters, 2017‏ - APS
The rotation curves of spiral galaxies exhibit a diversity that has been difficult to understand
in the cold dark matter (CDM) paradigm. We show that the self-interacting dark matter …

Dark matter heats up in dwarf galaxies

JI Read, MG Walker, P Steger - Monthly Notices of the Royal …, 2019‏ - academic.oup.com
Gravitational potential fluctuations driven by bursty star formation can kinematically 'heat
up'dark matter at the centres of dwarf galaxies. A key prediction of such models is that, at a …

Be it therefore resolved: cosmological simulations of dwarf galaxies with 30 solar mass resolution

C Wheeler, PF Hopkins, AB Pace… - Monthly Notices of …, 2019‏ - academic.oup.com
We study a suite of extremely high-resolution cosmological Feedback in Realistic
Environments simulations of dwarf galaxies (), run to z= 0 with resolution, sufficient (for the …

The stellar mass–halo mass relation of isolated field dwarfs: a critical test of ΛCDM at the edge of galaxy formation

JI Read, G Iorio, O Agertz… - Monthly Notices of the …, 2017‏ - academic.oup.com
We fit the rotation curves of isolated dwarf galaxies to directly measure the stellar mass–halo
mass relation (M⋆–M 200) over the mass range 5× 105≲ M⋆/M⊙≲ 108. By accounting for …

Gas kinematics, morphology and angular momentum in the FIRE simulations

K El-Badry, E Quataert, A Wetzel… - Monthly Notices of …, 2018‏ - academic.oup.com
We study the z= 0 gas kinematics, morphology and angular momentum content of isolated
galaxies in a suite of cosmological zoom-in simulations from the FIRE project spanning M …

EDGE: the mass–metallicity relation as a critical test of galaxy formation physics

O Agertz, A Pontzen, JI Read, MP Rey… - Monthly Notices of …, 2020‏ - academic.oup.com
ABSTRACT We introduce the 'Engineering Dwarfs at Galaxy Formation's Edge'(EDGE)
project to study the cosmological formation and evolution of the smallest galaxies in the …

Origin and evolution of ultradiffuse galaxies in different environments

JA Benavides, LV Sales, MG Abadi… - Monthly Notices of …, 2023‏ - academic.oup.com
We study the formation of ultradiffuse galaxies (UDGs) using the cosmological
hydrodynamical simulation TNG50 of the Illustris-TNG suite. We define UDGs as dwarf …