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Fraser
2003-Dec-10, 09:54 PM
SUMMARY: One of the most distant galaxies ever seen seems to be in the midst of extremely active star formation. The galaxy has been dubbed the Cloverleaf, and it's 11 billion light-years away, so astronomers are seeing it when the Universe was less than 3 billion years old. It has a rate of star formation 300 times greater than our own Milky Way - 1,000 new stars are being formed each year. The discovery was made using the National Science Foundation's Very Large Array radio telescope.

View full article (http://www.universetoday.com/am/publish/distant_galaxy_active_formation)

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VanderL
2003-Dec-10, 09:59 PM
Is the galaxy they talk about in the picture? What do we see there, it looks just like an "Einstein Cross", doesn't it? But surely we can't see those four bright spots inside a galaxy?

VanderL
2003-Dec-14, 12:12 PM
To answer my own question: the 4 images are caused by gravitational lensing according to the NRAO that released this news. Apparantly the star formation rate of this galaxy, 11 billion lightyears away, is 300 times higher than in galaxies like our own. Maybe this means Halton Arp's model is correct after all. He claims that high redshift is not related to large distances, but is a sign of the age of a galaxy. The higher the redshift, the younger the object. So the Clverleaf galaxy is a very young galaxy, thus having a lot more star formation than the Milky Way.
Cheers.