Galactic bars have long been associated with many processes affecting galactic evolution. This paper studies how bars affect the star formation rate, mass and structure of a large sample of morphologically classified galaxies.
In today’s “astrophysical classic”, we delve into the seminal paper behind the Kennicutt-Schmidt relation, the empirical correlation between the star formation rate and gas density.
The authors of this work report the discovery of the most distant, spectroscopically-confirmed galaxy found to date, which presently lies about 30 billion light years from Earth. The galaxy is being observed as it was at a time just 700 million years after the Big Bang, which is a mere 5% of the universe’s current age of 13.8 billion years.
Using the upcoming Gaia telescope to measure ripples in the Milky Way will allow us to detect the impact of clumps of dark matter on our host galaxy.
New results from stacked weak lensing measurements of over a hundred thousand galaxies show that, on large scales, light from stars appears to trace the dark matter distribution of the Universe remarkably well.
The densest galaxy in the local Universe may have been found. M60-UCD1 is most likely a tidally-stripped remnant of a more massive progenitor galaxy. Strader et al. predicts that the progenitor of M60-UCD1 was ~ 50-200 times more massive, suggesting that it was once an elliptical galaxy that has been stripped of most of its mass.
The authors seek to understand how two galaxies are interacting with each other.
The undergrad research posts continue! This month’s post discusses the orientation of galaxies in the Universe.
Measurements of the circular velocities in groups of galaxies can test whether our current cosmology is correct.