heic1118 - Photo Release

Young star rebels against its parent cloud

15 December 2011

Hubble’s Wide Field Camera 3 has captured this image of a giant cloud of hydrogen gas illuminated by a bright young star. The image shows how violent the end stages of the star-formation process can be, with the young object shaking up its stellar nursery.

Despite the celestial colours of this picture, there is nothing peaceful about star forming region Sh 2-106, or S106 for short. A devilish young star, named S106 IR, lies in it and ejects material at high speed, which disrupts the gas and dust around it. The star has a mass about 15 times that of the Sun and is in the final stages of its formation. It will soon quieten down by entering the main sequence, the adult stage of stellar life.

For now, S106 IR remains embedded in its parent cloud, but it is rebelling against it. The material spewing off the star not only gives the cloud its hourglass shape but also makes the hydrogen gas in it very hot and turbulent. The resulting intricate patterns are clearly visible in this Hubble image.

The young star also heats up the surrounding gas, making it reach temperatures of 10 000 degrees Celsius. The star’s radiation ionises the hydrogen lobes, making them glow. The light from this glowing gas is coloured blue in this image.

Separating these regions of glowing gas is a cooler, thick lane of dust, appearing red in the image. This dark material almost completely hides the ionising star from view, but the young object can still be seen peeking through the widest part of the dust lane.

S106 was the 106th object to be catalogued by the astronomer Stewart Sharpless in the 1950s. It is a few thousand light-years distant in the direction of Cygnus (The Swan). The cloud itself is relatively small by the standards of star-forming regions, around 2 light-years along its longest axis. This is about half the distance between the Sun and Proxima Centauri, our nearest stellar neighbour.

This composite picture was obtained with the Wide Field Camera 3 on the NASA/ESA Hubble Space Telescope. It results from the combination of two images taken in infrared light and one which is tuned to a specific wavelength of visible light emitted by excited hydrogen gas, known as H-alpha. This choice of wavelengths is ideal for targetting star-forming regions. The H-alpha filter isolates the light emitted from hydrogen in gas clouds while the infrared light can shine through the dust that often obscures these regions.

Notes

The Hubble Space Telescope is a project of international cooperation between ESA and NASA.

Image credit: NASA, ESA and the Hubble Heritage Team (STScI/AURA)

Links

Contacts

Oli Usher
Hubble/ESA
Garching, Germany
Tel: +49-89-3200-6855
Email: ousher@eso.org

About the Release

Release No.:heic1118
Name:S106 IR, Sh 2-106
Type:• Milky Way : Star : Evolutionary Stage : Young Stellar Object
• Milky Way : Nebula
• Milky Way : Nebula : Type : Star Formation
Facility:Hubble Space Telescope

Images

Hubble view of star-forming region S106
Hubble view of star-forming region S106
Hubble/Subaru composite of star-forming region S 106
Hubble/Subaru composite of star-forming region S 106
Ground-based view of the area around star-forming region S 106
Ground-based view of the area around star-forming region S 106

Videos

Hubblecast 51: Star-forming region S 106
Hubblecast 51: Star-forming region S 106
Animation of S 106
Animation of S 106
Zooming in on S 106
Zooming in on S 106
Pan over S 106
Pan over S 106
Artist’s impression of S 106
Artist’s impression of S 106

Stock Visuals

Stock Image 1
The NASA/ESA Hubble Space Telescope during Servicing Mission 4
Stock Image 2
Hubble in orbit

Text

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