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SOFIA Observes Stellar Wind-Driven Bubble around Westerlund 2 5nvklj





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SOFIA Observes Stellar Wind-Driven Bubble around Westerlund 2

Dragon
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SOFIA Observes Stellar Wind-Driven Bubble around Westerlund 2 Empty SOFIA Observes Stellar Wind-Driven Bubble around Westerlund 2

Post by Dragon Sat Jun 26, 2021 2:51 am

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.


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SOFIA Observes Stellar Wind-Driven Bubble around Westerlund 2 334pu7m
Dragon
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Post by Dragon Sat Jun 26, 2021 2:52 am

SOFIA Observes Stellar Wind-Driven Bubble around Westerlund 2 Image_2728-Westerlund-2
Image credit: NASA / ESA / Hubble Heritage Team / STScI / AURA / A. Nota / Westerlund 2 Science Team.

This image of the open star cluster Westerlund 2 and its surroundings has been released to celebrate Hubble’s 25th year in orbit.

The image’s central region, containing the star cluster, blends visible-light data taken by the Advanced Camera for Surveys and near-infrared exposures taken by the Wide Field Camera 3.

The surrounding region is composed of visible-light observations taken by the Advanced Camera for Surveys


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SOFIA Observes Stellar Wind-Driven Bubble around Westerlund 2 334pu7m
Dragon
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Post by Dragon Sat Jun 26, 2021 2:55 am



Flight to Star Cluster Westerlund 2


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SOFIA Observes Stellar Wind-Driven Bubble around Westerlund 2 334pu7m
Dragon
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Post by Dragon Sat Jun 26, 2021 2:56 am



Pan across Westerlund 2


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SOFIA Observes Stellar Wind-Driven Bubble around Westerlund 2 334pu7m

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