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They are the sharpest images of our neighbouring galaxies ever produced.
Made using NASA's Hubble Space Telescope, an international team of astronomers today revealed the most comprehensive, high-resolution ultraviolet-light survey of nearby star-forming galaxies.
Team - Observations - Images - Spiral - Dwarf
The team combined new Hubble observations with archival Hubble images for 50 star-forming spiral and dwarf galaxies in the local universe.
The project, called the Legacy ExtraGalactic UV Survey (LEGUS), has amassed star catalogs for each of the LEGUS galaxies and cluster catalogs for 30 of the galaxies, as well as images of the galaxies themselves.
Catalogue - Click
To see the full catalogue, click here.
'There has never before been a star cluster and a stellar catalog that included observations in ultraviolet light,' said survey leader Daniela Calzetti of the University of Massachusetts, Amherst.
'Ultraviolet - Light - Tracer - Star - Populations
'Ultraviolet light is a major tracer of the youngest and hottest star populations, which astronomers need to derive the ages of stars and get a complete stellar history.
'The synergy of the two catalogs combined offers an unprecedented potential for understanding star formation.'
Stars - Question - Astronomy - Experts
How stars form is still a vexing question in astronomy, experts say.
'Much of the light we get from the universe comes from stars, and yet we still don't understand many aspects of how stars form,' said team member Elena Sabbi of the Space Telescope Science Institute in Baltimore, Maryland.
'This - Existence - Life - Star - Around
'This is even key to our existence — we know life wouldn't be here if we didn't have a star around.'
The star cluster catalogs contain about 8,000 young clusters whose ages range from 1 million to roughly 500 million years old.
Groupings - Times - Clusters - Milky - Way
These stellar groupings are as much as 10 times more massive than the largest clusters seen in our Milky Way galaxy.
The star catalogs comprise about 39 million stars that are at least five times more massive than our Sun.
Stars - Images
Stars in the visible-light images are between...
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