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Celestial Fireworks: Into Star Cluster Westerlund 2

On July 4, 2017, APoD shared a nice video (► Take a look at>> https://www.youtube.com/watch?v=dtY44sPNHcU), from which I excerpted the clip below.
Some information about this video named "Celestial Fireworks: Into Star Cluster Westerlund 2".

The nebula Gum 29 (or RCW 49) is a star-forming region at least 13,700 light years away (or more, based on some estimates) in the constellation of Carina, in the southern Galactic plane of our Milky Way galaxy. One of the most prolific birthing grounds, RCW 49 is a dark and dusty stellar nursery that houses more than 2,200 stars. Because many of the stars in RCW 49 are deeply embedded in plumes of dust, they cannot be seen at visible wavelengths. When viewed with Spitzer's infrared eyes, however, RCW 49 becomes transparent.
At the core of this nebula is Westerlund 2, an obscured compact young star cluster (perhaps even a super star cluster) in the Milky Way, containing several thousand stars.
These newborn stars are approximately 2 million years old, and their light illuminates, heats, and erodes the surrounding gas.

As its name indicates, the Westerlund 2 cluster was discovered by Bengt Westerlund in the 1960s but its stellar content was assessed only in later years.
On 23 April 2015 an image of the Westerlund 2 cluster was chosen to celebrate the 25th anniversary of the Hubble Space Telescope.

The visualization, previously mentioned, provides a three-dimensional perspective on the nebula and star cluster. The flight traverses the foreground stars and approaches the lower left rim of the nebula. Passing through the wispy darker clouds on the near side, the journey reveals bright gas illuminated by the intense radiation of the newly formed star cluster.

Within the nebula, several pillars of dark, dense gas are being shaped by the energetic light and strong stellar winds from the brilliant cluster of thousands of stars.
Note that the visualization is intended only as a scientifically reasonable interpretation and that distances within the model are significantly compressed.

Visualization Credit: NASA, ESA, Hubble, J. Anderson, G. Bacon, L. Frattare, Z. Levay, and F. Summers (STScI)
Acknowledgment: The Hubble Heritage Team (STScI/AURA), A. Nota (ESA/STScI), the Westerlund 2 Science Team, and ESO

Further reading and references

► Celestial Fireworks: Into Star Cluster Westerlund 2 >>
https://apod.nasa.gov/apod/ap170704.html

► Westerlund 2>> https://en.wikipedia.org/wiki/Westerlund_2

► Early-type stars in the core of the young open cluster Westerlund2>> https://arxiv.org/abs/astro-ph/0612622

►Hubble Space Telescope Celebrates 25 Years of Unveiling the Universe>>
http://hubblesite.org/news_release/news/2015-12

► RCW 49 picture and information>> http://www.spaceimages.com/spstjercw49p.html

#DarkNebulae, #EmissionNebulae, #Nebulae, #StarClusters, #StarFormingRegions, #Stars,#Universe, #Space, #Westerlund2
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"When I disappear, the world still goes on... I know it's wrong, but I wish that it would mourn for my passing. I hate myself for that wish..."
-- hope-descends
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