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Isaac Newton Group of Telescopes (ING)

ING: Under the Dark Halo Old Galaxies Have Many More Stars

26 Apr 2012, 12:00 UTC
ING: Under the Dark Halo Old Galaxies Have Many More Stars

Astronomers from the Atlas3D team, using the SAURON integral-field spectrograph on the William Herschel Telescope, have found that some of the oldest galaxies in the
Universe have three times as much stellar mass, and as many more stars, than all current models of galaxy evolution predict.
This result means that the models, which assumed for decades that the light we observe from a galaxy can be used to infer its stellar mass, will have to be revised.
A report of the research is published in Nature on 26 April 2012.

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