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Green ring fit for a superhero: Spitzer Space Telescope spies powerful light of giant 'O' stars

Date:
June 19, 2011
Source:
NASA's Jet Propulsion Laboratory
Summary:
This glowing emerald nebula seen by NASA's Spitzer Space Telescope is reminiscent of the glowing ring wielded by the superhero Green Lantern. In the comic books, the diminutive Guardians of the Planet "Oa" forged his power ring, but astronomers believe rings like this are actually sculpted by the powerful light of giant "O" stars. O stars are the most massive type of star known to exist.

This glowing emerald nebula seen by NASA's Spitzer Space Telescope is reminiscent of the glowing ring wielded by the superhero Green Lantern.
Credit: NASA/JPL-Caltech

This glowing emerald nebula seen by NASA's Spitzer Space Telescope is reminiscent of the glowing ring wielded by the superhero Green Lantern. In the comic books, the diminutive Guardians of the Planet "Oa" forged his power ring, but astronomers believe rings like this are actually sculpted by the powerful light of giant "O" stars. O stars are the most massive type of star known to exist.

Named RCW 120 by astronomers, this region of hot gas and glowing dust can be found in the murky clouds encircled by the tail of the constellation Scorpius. The green ring of dust is actually glowing in infrared colors that our eyes cannot see, but show up brightly when viewed by Spitzer's infrared detectors. At the center of this ring are a couple of giant stars whose intense ultraviolet light carved out the bubble, though they blend in with the other stars when viewed in infrared.

Rings like this are so common in Spitzer's observations that astronomers have even enlisted the help of the public to help find and catalog them all. Anyone interested in joining the search as a citizen scientist can visit "The Milky Way Project," part of the "Zooniverse" of public astronomy projects, at http://www.milkywayproject.org/ .

The flat plane of our galaxy is located toward the bottom of the picture, and the ring is slightly above the plane. The green haze seen at the bottom of the image is the diffuse glow of dust from the galactic plane.

NASA's Jet Propulsion Laboratory, Pasadena, Calif., manages the Spitzer Space Telescope mission for NASA's Science Mission Directorate, Washington. Science operations are conducted at the Spitzer Science Center at the California Institute of Technology in Pasadena. Caltech manages JPL for NASA. For more information about Spitzer, visit http://spitzer.caltech.edu/ and http://www.nasa.gov/spitzer


Story Source:

The above story is based on materials provided by NASA's Jet Propulsion Laboratory. Note: Materials may be edited for content and length.


Cite This Page:

NASA's Jet Propulsion Laboratory. "Green ring fit for a superhero: Spitzer Space Telescope spies powerful light of giant 'O' stars." ScienceDaily. ScienceDaily, 19 June 2011. <www.sciencedaily.com/releases/2011/06/110619140505.htm>.
NASA's Jet Propulsion Laboratory. (2011, June 19). Green ring fit for a superhero: Spitzer Space Telescope spies powerful light of giant 'O' stars. ScienceDaily. Retrieved April 23, 2014 from www.sciencedaily.com/releases/2011/06/110619140505.htm
NASA's Jet Propulsion Laboratory. "Green ring fit for a superhero: Spitzer Space Telescope spies powerful light of giant 'O' stars." ScienceDaily. www.sciencedaily.com/releases/2011/06/110619140505.htm (accessed April 23, 2014).

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