The Atacama Large Millimetre/submillimetre Array is putting together an astronomical census of nearby stellar nurseries called the Physics at High Angular resolution in Nearby GalaxieS, or PHANGS. So far, about 100,000 such nurseries have been charted over the course of more than 750 hours of observation focused on 74 nearby galaxies. The goal is to eventually characterise some 300,000 stellar nurseries to help astronomers better understand why some star forming regions evolve gradually while others experience rapid, if not explosive, rates of star birth. The PHANGS study is expected to shed light on how a galaxy’s size, age and internal dynamics might influence star formation.
Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) have discovered an adolescent protostar that is undergoing a rapid-fire succession of growth spurts. Evidence for this fitful youth is seen in a pair of intermittent jets streaming away from the star’s poles. Known as CARMA-7, the protostar is one of dozens of similar objects in the Serpens South star cluster, which is located approximately 1,400 light-years from Earth.