In today’s paper, the authors use Cepheid distance moduli to study the structure of the SMC.
The authors of today’s paper created simulated galaxies, for which true properties are known. They then used synthetic observations to compare the true answers to the values observers would expect to recover.
Dark matter permeates the Universe and surrounds every galaxies in the form of dark matter halos. We don’t really know dark matter works, as predictions of standard cosmology, Lambda Cold Dark Matter (ΛCDM), are way off from observations. Is this the death of Cold Dark Matter, or there are something more to it?
Galaxies die—at least when measured by how vigorously they produce stars. What causes them to die?
Observations of dust near the remains of a supernova in the center of our galaxy could have implications for dust production in the earliest galaxies.
This paper reports the results of a cosmological simulation, and how smooth accretion and mergers affect three important aspects of galaxy formation: stellar mass growth, size increase, and morphology changes.