A team of astronomers found that in typical galaxies, pressure from ionized gas generated by newly formed stars drives the expansion of star-forming regions. However, whether these regions continue to grow or stall depends strongly on their surrounding environment.
Recent News
NSF VLA and ALMA Reveal Hidden “Ring Factories” of Giant Star Clusters in Nearby Galaxies
Astronomers have used U.S. National Science Foundation National Radio Astronomy Observatory (NSF NRAO) radio telescopes in Chile and New Mexico to peer through cosmic smoke and haze, building one of the clearest pictures yet of how giant clusters of young stars are born in the hearts of nearby galaxies.
Radar Echoes From Europa Reveal Secrets Beneath the Ice
A team of scientists has used NASA’s Goldstone Solar System Radar and the U.S. National Science Foundation Green Bank Telescope (NSF GBT) to carry out the most extensive radar study to date of Europa, the ocean world orbiting Jupiter.
ALMA Spots Monstrous Baby Galaxies Cradled in Dark Matter
Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) have discovered a nest of monstrous baby galaxies 11.5 billion light-years away. These young galaxies seem to reside at the junction of gigantic filaments in a web of dark matter. These findings are important for understanding how monstrous galaxies like these form and how they evolve into huge elliptical galaxies.
A press release on these results was issued by The University of Tokyo in Japanese. The English version was translated by the National Astronomical Observatory of Japan. The full text is available here.
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This observation result was published as Umehata et al. “ALMA Deep Field in SSA22: A concentration of dusty starbursts in a z=3.09 protocluster core” in theAstrophysical Journal Letters, issued on December 4, 2015.
The Atacama Large Millimeter/submillimeter Array (ALMA), an international astronomy facility, is a partnership of the European Organisation for Astronomical Research in the Southern Hemisphere (ESO), the U.S. National Science Foundation (NSF) and the National Institutes of Natural Sciences (NINS) of Japan in cooperation with the Republic of Chile. ALMA is funded by ESO on behalf of its Member States, by NSF in cooperation with the National Research Council of Canada (NRC) and the National Science Council of Taiwan (NSC) and by NINS in cooperation with the Academia Sinica (AS) in Taiwan and the Korea Astronomy and Space Science Institute (KASI).
ALMA construction and operations are led by ESO on behalf of its Member States; by the National Radio Astronomy Observatory (NRAO), managed by Associated Universities, Inc. (AUI), on behalf of North America; and by the National Astronomical Observatory of Japan (NAOJ) on behalf of East Asia. The Joint ALMA Observatory (JAO) provides the unified leadership and management of the construction, commissioning and operation of ALMA.
Recent News
Young Stars Shape the Fate of Galaxies
A team of astronomers found that in typical galaxies, pressure from ionized gas generated by newly formed stars drives the expansion of star-forming regions. However, whether these regions continue to grow or stall depends strongly on their surrounding environment.
NSF VLA and ALMA Reveal Hidden “Ring Factories” of Giant Star Clusters in Nearby Galaxies
Astronomers have used U.S. National Science Foundation National Radio Astronomy Observatory (NSF NRAO) radio telescopes in Chile and New Mexico to peer through cosmic smoke and haze, building one of the clearest pictures yet of how giant clusters of young stars are born in the hearts of nearby galaxies.
Radar Echoes From Europa Reveal Secrets Beneath the Ice
A team of scientists has used NASA’s Goldstone Solar System Radar and the U.S. National Science Foundation Green Bank Telescope (NSF GBT) to carry out the most extensive radar study to date of Europa, the ocean world orbiting Jupiter.