News tagged with galaxy formation

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Minor mergers are major drivers of star formation

Around half of the star formation in the local Universe arises from minor mergers between galaxies, according to data from the Sloan Digital Sky Survey. The patch of sky called Stripe 82 is observed repeatedly to produce ...

dateJun 28, 2016 in Astronomy
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Image: Hubble uncovers a mysterious dwarf galaxy

The drizzle of stars scattered across this image forms a galaxy known as UGC 4879. UGC 4879 is an irregular dwarf galaxy—as the name suggests, galaxies of this type are a little smaller and messier than their cosmic cousins, ...

dateJun 13, 2016 in Astronomy
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Elliptical galaxies not formed by merging

Using an "intuitive" approach, a SISSA study confirms a recent hypothesis on the formation of galaxies, according to which the larger elliptical galaxies formed in very ancient times through a process of local (in situ) star ...

dateJun 01, 2016 in Astronomy
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Star formation in distant galaxy clusters

The first stars appeared about one hundred million years after the big bang, and ever since then stars and star formation processes have lit up the cosmos, producing heavy elements, planets, black holes, and arguably all ...

dateFeb 15, 2016 in Astronomy
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