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News Release Archive:

News Release 44 of 214

September 2, 2010 02:00 PM (EDT)

News Release Number: STScI-2010-30

New Hubble Observations of Supernova 1987A Trace Shock Wave

The full news release story:

New Hubble Observations of Supernova 1987A Trace Shock WaveView this image

An international team of astronomers using the Hubble Space Telescope reports a significant brightening of the emissions from Supernova 1987A. The results, which appear in this week's Science magazine, are consistent with theoretical predictions about how supernovae interact with their immediate galactic environment.

The team observed the supernova remnant in optical, ultraviolet, and near-infrared light. They studied the interaction between the ejecta from the stellar explosion and a glowing 6-trillion-mile-diameter ring of gas encircling the supernova remnant. The gas ring was probably shed some 20,000 years before the supernova exploded. Shock waves resulting from the impact of the ejecta onto the ring have brightened 30 to 40 pearl-like "hot spots" in the ring. These blobs likely will grow and merge together in the coming years to form a continuous, glowing circle.

"We are seeing the effect a supernova can have in the surrounding galaxy, including how the energy deposited by these stellar explosions changes the dynamics and chemistry of the environment," said University of Colorado at Boulder Research Associate Kevin France of the Center for Astrophysics and Space Astronomy. "We can use these new data to understand how supernova processes regulate the evolution of galaxies."

Discovered in 1987, Supernova 1987A is the closest exploding star to Earth to be detected since 1604 and it resides in the nearby Large Magellanic Cloud, a dwarf galaxy adjacent to our own Milky Way Galaxy.

 

CONTACT

Jim Scott
University of Colorado, Boulder, Colo.
303-492-3114
jim.scott@colorado.edu

Christine Pulliam
Harvard-Smithsonian Center for Astrophysics, Cambridge, Mass.
617-495-7463
cpulliam@cfa.harvard.edu

Ray Villard
Space Telescope Science Institute, Baltimore, Md.
410-338-4514
villard@stsci.edu