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Steve Roy
Media Relations Dept.
Marshall Space Flight Center, Huntsville, AL
steve.roy{at}msfc.nasa.gov
(256) 544-0034

For release: 02/14/03

Photo release no.: 03-027

Chandra image reveals heart-shaped gas cloud
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Chandra X-ray Observatory Image of NGC 346: A Heart in the Darkness

[http://www1.msfc.nasa.gov/NEWSROOM/news/photos
              /2003/photos03-027.html]

This NASA Chandra X-ray Observatory image of the young star cluster 
NGC 346 highlights a heart-shaped cloud of 8 million degree Celsius 
gas in the central region.  Evidence from radio, optical and 
ultraviolet telescopes suggests that the hot cloud, which is about 100 
light years across, is the remnant of a supernova explosion that 
occurred thousands of years ago. 

The progenitor could have been a companion of the massive young star 
that is responsible for the bright X-ray source at the top center of 
the image. This young star, HD 5980, one of the most massive known, 
has been observed to undergo dramatic eruptions during the last 
decade. An alternative model for the origin of the hot cloud is that
eruptions of HD 5980 long ago produced the cloud of hot gas, in a 
manner similar to the gas cloud observed around the massive star Eta 
Carinae.

Future observations will be needed to decide between the alternatives. 
Until then, the nature of the heart in the darkness will remain 
mysterious. NASA's Marshall Space Flight Center in Huntsville, Ala., 
manages the Chandra program for NASA. (NASA/CXC/U.Liege/Y.Nazé et al.)

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