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Stars Brewing in Cygnus X

Jan 10, 2012
A bubbling cauldron of star birth is highlighted in this image from NASA's Spitzer Space Telescope. Massive stars have blown bubbles, or cavities, in the dust and gas -- a violent process that triggers both the death and birth of stars.


Callouts
Click on the image for larger view

A bubbling cauldron of star birth is highlighted in this image from NASA's Spitzer Space Telescope. Infrared light that we can't see with our eyes has been color-coded, such that the shortest wavelengths are shown in blue and the longest in red. The middle wavelength range is green.

Massive stars have blown bubbles, or cavities, in the dust and gas -- a violent process that triggers both the death and birth of stars. The brightest, yellow-white regions are warm centers of star formation. The green shows tendrils of dust, and red indicates other types of dust that may be cooler, in addition to ionized gas from nearby massive stars.

Cygnus X is about 4,500 light-years away in the constellation Cygnus, or the Swan.

Blue represents light at 3.6 microns: 4.5-micron light is blue-green; 8.0-micron light is green; and 24-micron light is red. These data were taken before the Spitzer mission ran out of its coolant in 2009, and began its "warm" mission.

Callouts
The top left box shows AFGL 2636, which is a bright-rimmed shell of material, carved out by winds and radiation from massive stars. These massive stars are located near the tip of the pillar in the center of the region. The inner region is glowing red due to gasthat has been ionized by the massive stars. Spitzer has revealed a cluster of young stars with planet-forming disks in the central region, and embryonic stars embedded in the rim around the cavity. The situation is similar in the top right image, a region called DR22.

The lower left and right images show clouds that are so thick to appear dark even to the dust-piercing, infrared eyes of Spitzer. Young stars, visible as red points, are buried in these dark clouds. They are red because they are heating up surrounding dust, causing it to glow at longer infrared wavelengths.

The red orb in the lower right image surrounds what is thought to be a star called a luminous blue variable, visible as the blue central point. This is a more evolved massive star that, after periods of instability, cast off a shell of material (red) from its outer layers. The bright object below the dark cloud in the lower right image is the tip of a large pillar, called DR 15, which is being eroded by winds and radiation from a large number of massive stars located above it.

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Mission
  • Infrared Universe Mission
Instrument
  • Infrared Array Camera (IRAC)
Credit
NASA/JPL-Caltech/Harvard-Smithsonia CfA

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