by Using data from NASA’s Stratospheric Observatory for Infrared Astronomy (SOFIA) telescope, astronomers analyzed the movement of carbon atoms in an expanding bubble of gas surrounding the star cluster Westerlund 2.
The researchers found that a single bubble surrounds Westerlund 2 and disproved earlier studies suggesting there may be two bubbles surrounding the star cluster.
Discovered by the Swedish astronomer Bengt Westerlund in the 1960s, Westerlund 2 is a giant cluster of about 3,000 stars.
Also known as ESO 127-18, the cluster is located approximately 20,000 light-years away in the constellation of Carina.
Westerlund 2 is about 10 light-years across and resides in a giant stellar nursery called Gum 29 (RCW 49).
It is only 2 million years old, but contains some of the brightest, hottest and most massive stars ever discovered.
Source
The researchers found that a single bubble surrounds Westerlund 2 and disproved earlier studies suggesting there may be two bubbles surrounding the star cluster.
Discovered by the Swedish astronomer Bengt Westerlund in the 1960s, Westerlund 2 is a giant cluster of about 3,000 stars.
Also known as ESO 127-18, the cluster is located approximately 20,000 light-years away in the constellation of Carina.
Westerlund 2 is about 10 light-years across and resides in a giant stellar nursery called Gum 29 (RCW 49).
It is only 2 million years old, but contains some of the brightest, hottest and most massive stars ever discovered.
Source
