Early massive galaxies—those that formed in the three billion years following the Big Bang—should have contained large amounts of cold hydrogen gas, the fuel required to make stars. But scientists observing the early Universe with the Atacama Large Millimeter/submillimeter Array (ALMA) and the Hubble Space Telescope have spotted something strange: half a dozen early massive galaxies that ran out of fuel.
Tag: galaxies evolution
Scientists Observe Gas Re-accretion in Dying Galaxies for the First Time
A new study from scientists using the Atacama Large Millimeter/submillimeter Array (ALMA) suggests that previously displaced gases can re-accrete onto galaxies, potentially slowing down the process of galaxy death caused by ram pressure stripping, and creating unique structures more resistant to its effects.
University of Chicago undergrads discover bright lensed galaxy in the early universe, despite pandemic barriers
A class of undergraduate astrophysics students at the University of Chicago helped discover a galaxy that dates back to a time when the universe was only 1.2 billion years old, about one-tenth of its current age.
IMAGE RELEASE: A Galaxy’s Stop-and-Start Young Radio Jets
VLBA image shows details of a young jet emitted from the core of an active galaxy, revealing that the jet activity stopped, then restarted only a decade ago.
Slime Mold Simulations Used to Map the Dark Matter Holding the Universe Together
A team of researchers designed a computer algorithm based on slime mold behavior to generate a filamentary map of the universe, which they then confirmed with archival observations from the Hubble Space Telescope.
Astronomers Find Wandering Massive Black Holes in Dwarf Galaxies
Studies with the VLA indicate that roughly half of the massive black holes in dwarf galaxies are not in the centers of those galaxies. This gives astronomers new insights into the conditions in which similar black holes formed and grew in the early history of the Universe.