Oct 6, 2024
Westerlund 1, 12000 lys away l Webb
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Westerlund 1, 12000 lys away l Webb
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JWST on Westerlund 1
This open cluster is located in the constellation of Ara and is 12,000 light years from Earth.
As you'll see from the diverse colours in the image, Westerlund 1 has one of the most diverse group of giant stars and is unlike most open clusters in our Galaxy. It's estimated that the cluster is only 3-5 million years old.
The above taken by Hubble gives a clearer view of the number of stars, but maybe not the variation as does JWST.
Starry Westerlund 1 © ESA/Hubble
Westerlund 1 This is Westerlund 1, one of the largest open clusters of stars in the Milky Way Galaxy. Open Clusters are stars that all formed at about the same time, all of which are about the same distance from Earth, most likely formed from a single dense molecular cloud which in this case has now dissipated due to the flaring up of so many stars.
Westerlund 1 - Massive Stars
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Young Stars and Tails
Westerlund 1
Credit: ESA/Hubble & NASA
The Massive Stars in Westerlund 1 // NASA
Star cluster Westerlund 1 is home to some of the largest and most massive stars known. It is headlined by the star Westerlund 1-26, a red supergiant star so big that if placed in the center of our Solar System, it would extend out past the orbit of Jupiter. Additionally, the young star cluster is home to 3 other red supergiants, 6 yellow hypergiant stars, 24 Wolf-Rayet stars, and several even-more unusual stars that continue to be studied. Westerlund 1 is relatively close-by for a star cluster at a distance of 15,000 light years, giving astronomers a good laboratory to study the development of massive stars. The featured image of Westerlund 1 was taken by the Hubble Space Telescope toward the southern constellation of the Altar (Ara). Although presently classified as a “super” open cluster, Westerlund 1 may evolve into a low mass globular cluster over the next billion years.