New WISE mission catalog of entire infrared sky released

Mar 15, 2012 By Whitney Clavin and J.D. Harrington
Over 11,000 years ago, a massive, supergiant star came to the end of its life. The star's core collapsed to form an incredibly dense ball of neutrons, and its exterior was blasted away in an immense release of energy astronomers call a supernova. Image Credit: NASA/JPL-Caltech/UCLA

(PhysOrg.com) -- NASA unveiled a new atlas and catalog of the entire infrared sky today showing more than a half billion stars, galaxies and other objects captured by the Wide-field Infrared Survey Explorer (WISE) mission.

"Today, WISE delivers the fruit of 14 years of effort to the ," said Edward Wright, WISE principal investigator at UCLA, who first began working on the mission with other team members in 1998.

WISE launched Dec. 14, 2009, and mapped the entire sky in 2010 with vastly better sensitivity than its predecessors. It collected more than 2.7 million images taken at four of light, capturing everything from nearby asteroids to distant galaxies. Since then, the team has been processing more than 15 trillion bytes of returned data. A preliminary release of WISE data, covering the first half of the sky surveyed, was made last April.

The WISE catalog of the entire sky meets the mission's fundamental objective. The individual WISE exposures have been combined into an atlas of more than 18,000 images covering the sky and a catalog listing the infrared properties of more than 560 million individual objects found in the images. Most of the objects are , with roughly equal numbers of each. Many of them have never been seen before.

NASA releases new WISE mission catalog of entire infrared sky
Over 11,000 years ago, a massive, supergiant star came to the end of its life. The star's core collapsed to form an incredibly dense ball of neutrons, and its exterior was blasted away in an immense release of energy astronomers call a supernova. Credit: NASA/JPL-Caltech/UCLA

WISE observations have led to numerous discoveries, including the elusive, coolest class of stars. Astronomers hunted for these failed stars, called "Y-dwarfs," for more than a decade. Because they have been cooling since their formation, they don't shine in and could not be spotted until WISE mapped the sky with its .

WISE also took a poll of near-Earth asteroids, finding there are significantly fewer mid-size objects than previously thought. It also determined has found more than 90 percent of the largest near-Earth asteroids.

Other discoveries were unexpected. WISE found the first known "Trojan" asteroid to share the same orbital path around the sun as Earth. One of the images released today shows a surprising view of an "echo" of infrared light surrounding an exploded star. The echo was etched in the clouds of gas and dust when the flash of light from the supernova explosion heated surrounding clouds. At least 100 papers on the results from the WISE survey already have been published. More discoveries are expected now that astronomers have access to the whole sky as seen by the spacecraft.

"With the release of the all-sky catalog and atlas, WISE joins the pantheon of great sky surveys that have led to many remarkable discoveries about the universe," said Roc Cutri, who leads the WISE data processing and archiving effort at the Infrared and Processing Analysis Center at the California Institute of Technology in Pasadena. "It will be exciting and rewarding to see the innovative ways the science and educational communities will use WISE in their studies now that they have the data at their fingertips."

Explore further: Young binary star system may form planets with weird and wild orbits

More information: For a collection of WISE images released to date, visit: wise.ssl.berkeley.edu/gallery_images.html

An introduction and quick guide to accessing the WISE all-sky archive for astronomers is online at: wise2.ipac.caltech.edu/docs/release/allsky/

For more information about WISE, visit: www.nasa.gov/wise

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User comments : 4

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Cal_Sailor
5 / 5 (1) Mar 15, 2012
It's always good to have a map before you step out the door.
SleepTech
not rated yet Mar 15, 2012
The captions read the same for both images was this intentional?
Blakut
not rated yet Mar 15, 2012
I don't think so, the last caption should be the right one. The top image is of the whole sky, not just a SN remnant.
yyz
not rated yet Mar 15, 2012
There's a nifty zoomable version of the full 10000x5030 pixel all-sky mosaic here: http://www.starry...ise-sky/

I can even pick out individual spiral arms in the Andromeda Galaxy in this mosaic! Like the 2MASS(2 micron all-sky survey) from the 1980's, WISE's collection of imagery should be a treasure trove for researchers for years to come.