US EditionHigh-velocity molecular clouds in M83 provide new insight into how galaxies evolve
- Using the ALMA telescope, an international research team led by Jin Koda identified 10 molecular gas clouds traveling at unusually high speeds within the galaxy M83, also known as the Southern Pinwheel.
- This discovery arose from a molecular gas survey prompted by the need to understand gas inflows sustaining star formation over billions of years.
- The clouds move at speeds differing from M83's rotation and do not match known supernova remnants, suggesting external origin or ejection and fallback as possible causes.
- Nagata noted that most of these clouds cannot be linked to any previously identified supernova remnants in M83, while Koda suggested that these clouds are likely being accreted by M83 from outside the galaxy.
- The findings, published in The Astrophysical Journal and supported by NSF grant 2006600, offer new insight into galaxy evolution and star formation similar to processes in the Milky Way.
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39 Articles
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ALMA lets astronomers see building blocks of early galaxies
Chile's ALMA observatory, which houses some of the world's most powerful telescopes, has captured its most detailed images to date of the building blocks of the early universe -- primarily cold gases, dust and stellar light in 39 galaxies.
High-velocity molecular clouds in M83 provide new insight into how galaxies evolve
A new result from the molecular gas survey in the Southern Pinwheel Galaxy M83 using the Atacama Large Millimeter/submillimeter Array (ALMA) Telescope reveals a discovery of 10 high-velocity clouds composed of molecular gas, moving at velocities significantly different from M83's overall rotation, an indication that the influx of these gases—which help to form stars—are from outside the galaxy.
How spiral galaxies like M83 provide new material for billions of years – and what this has to do with our Milky Way. The article Fresh gas for new stars: M83 has galactic hunger first appeared on ingenieur.de - Job Market and news portal for engineers.
Study Provides New Insight to How Galaxies Evolve
A new result from the molecular gas survey in the Southern Pinwheel Galaxy M83 using the Atacama Large Millimeter/submillimeter Array (ALMA) Telescope reveals a discovery of 10 high-velocity clouds composed of molecular gas, moving at velocities significantly different from M83's overall rotation, an indication that the influx of these gases - which help to form stars - are from outside the galaxy.
“We have been able to observe – with an unprecedented level of detail – how stars, dust and gas are distributed and interacted in a sample of the first galaxies that formed in the cosmos,” explains Rodrigo Herrera-Camus, director of Mingal and astronomer at the University of Concepción, who directed this research. “For the first time, and thanks to the Alma observatory, we were able to study the cold gas of these galaxies, the raw material from …
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