Anarchic Star Formation Found In Dust Cloud

Article written: 2 May , 2013
Updated: 23 Dec , 2015
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If you think that breaking all the rules is cool, then you’ll appreciate one of the latest observations submitted by the Danish 1.54 meter telescope housed at ESO’s La Silla Observatory in Chile. In this thought-provoking image, you’ll see what kind of mayhem occurs when stars are forged within an interstellar nebula.

Towards the center of the Milky Way in the direction of the constellation of Sagittarius, and approximately 5000 light-years from our solar system, an expansive cloud of gas and dust await. By comparison with other nebulae in the region, this small patch of cosmic fog known as NGC 6559 isn’t as splashy as its nearby companion nebula – the Lagoon (Messier 8). Maybe you’ve seen it with your own eyes and maybe you haven’t. Either way, it is now coming to light for all of us in this incredible image.

Comprised of mainly hydrogen, this ethereal mist is the perfect breeding ground for stellar creation. As areas contained within the cloud gather enough matter, they collapse upon themselves to form new stars. These neophyte stellar objects then energize the surrounding hydrogen gas which remains around them, releasing huge amounts of high energy ultraviolet light. However, it doesn’t stop there. The hydrogen atoms then merge into the mix, creating helium atoms whose energy causes the stars to shine. Brilliant? You bet. The gas then re-emits the energy and something amazing happens… an emission nebula is created.

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This zoom starts with a broad view of the Milky Way. We head in towards the centre, where stars and the pink regions marking star formation nurseries are concentrated. We see the huge gas cloud of the Lagoon Nebula (Messier 8) but finally settle on the smaller nebula NGC 6559. The colourful closing image comes from the Danish 1.54-metre telescope located at ESO’s La Silla Observatory in Chile. Credit: ESO/Nick Risinger (skysurvey.org)/S. Guisard. Music: movetwo

In the center of the image, you can see the vibrant red ribbon of the emission nebula, but that’s not the only thing contained within NGC 6559. Here swarms of solid dust particles also exist. Consisting of tiny bits of heavier elements, such as carbon, iron and silicon, these minute “mirrors” scatter the light in multiple directions. This action causes NGC 6559 to be something more than it first appears to be… now it is also a reflection nebula. It appears to be blue thanks to the magic of a principle known as Rayleigh scattering – where the light is projected more efficiently in shorter wavelengths.

Don’t stop there. NGC 6559 has a dark side, too. Contained within the cloud are sectors where dust totally obscures the light being projected behind them. In the image, these appear as bruises and dark veins seen to the bottom left-hand side and right-hand side. In order to observe what they cloak, astronomers require the use of longer wavelengths of light – ones which wouldn’t be absorbed. If you look closely, you’ll also see a myriad of saffron stars, their coloration and magnitude also effected by the maelstrom of dust.

It’s an incredible portrait of the bedlam which exists inside this very unusual interstellar cloud…

Original Story Source: ESO News Release.

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4 Responses

  1. "Me" says

    I would luv to see a super nova’s go off & watch the shock wave stir up a near by nebula. I’d watch how it begins star formation(s) to building planets & solar system(s). Mean while 4 billion yrs. have passed by. Talk about watching paint peel. :-)… . PEACE!

  2. Member
    Aqua4U says

    Now THAT is a cool video! Back in the early 70’s while working for Tylan Corp. an ‘early’ semiconductor manufacturing company, one of the engineers told us about his work on spy *.sats in the late 60’s. He mentioned seeing a clip of a zoom from Earth orbit where you could see the curvature, clouds and land masses below. The lens started zooming in and didn’t stop until it saw the grooves on a tennis ball sitting unused on a tennis court! Shhhh… bet you dint know we had that cap. back then?

    • "Me" says

      I was in my very early 20’s working through JPL(sub-contracting)when I first started in the protection(s) of Sats.. Working w/PM’s(prevent-maintenance)w/engineering the angle(s) of radiation shielding protection. I finally knew what was going down. The “need to know” basis was huge. Also, the experience you got working at Tylan Corp. was priceless What a top notch company to work for. The experience you attained surely helped out your career . Good for you :-).. .

  3. Interesting: “These neophyte stellar objects then energize the surrounding hydrogen gas which remains around them, releasing huge amounts of high energy ultraviolet light. However, it doesn’t stop there. The hydrogen atoms then merge into the mix, creating helium atoms whose energy causes the stars to shine. Brilliant? You bet. The gas then re-emits the energy and something amazing happens… an emission nebula is created.”

    Which means that the density and temperature needed for nuclear fusion seems to have been redefined. Really?

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