ALMA tagged posts

European astronomers have used the Atacama Large Millimeter Array (ALMA) and the James Webb Space Telescope (JWST) to observe a recently discovered giant disk galaxy known as ADF22.1. Results of the new observations, published April 8 on the arXiv preprint server, shed more light on the formation and evolution of this galaxy.

A unique laboratory
ADF22.1, also known as ADF22.A1, is a giant disk barred spiral galaxy residing in a protocluster known as SSA22 at a redshift of 3.09. It has an effective radius of some 22,800 light years and a stellar mass of about 100 billion solar masses...

Researchers have uncovered new insights into the early development of baby stars...

A team of 48 astronomers from 14 countries, led by the University of Massachusetts Amherst, has discovered a population of dusty, star-forming galaxies at the far edges of the universe that formed only a billion years after the Big Bang, believed to have occurred 13.7 billion years ago. The galaxies may represent a snapshot in the galactic life cycle, linking recently discovered ultradistant bright galaxies formed 13.3 billion years ago with early “quiescent” (dead) galaxies that stopped forming stars about two billion years after the Big Bang.

Challenging what we know about cosmos
The new discovery challenges current models of the universe, making the f...

Black holes are notorious for gobbling up everything that comes their way, but astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) have discovered that even supermassive black holes can be picky eaters, and this can have a significant impact on their growth.

This discovery, now published in The Astrophysical Journal, was made by an international team of astronomers led by Makoto A. Johnstone, a Ph.D. candidate with the University of Virginia. The team used ALMA to study seven nearby galaxy mergers hosting supermassive black holes separated by only a few thousand light-years.

How galaxy mergers affect black holes
When two massive, gas-rich galaxies merge, gravity drives vast amounts of cold molecular gas toward the centers of both systems, where supermassive ...