The Stars in Other Galaxies are Generally Heavier Than the Milky Way's Stars - by PaulMattSutter
. The research was conducted at the Cosmic Dawn Center , an international basic research center for astronomy supported by the Danish National Research Foundation. DAWN is a collaboration between the Niels Bohr Institute at the University of Copenhagen and DTU Space at the Technical University of Denmark.“We’ve only been able to see the tip of the iceberg and known for a long time that expecting other galaxies to look like our own was not a particularly good assumption to make.
The team found that on average more distant galaxies tended to have bigger stars than the Milky Way. On the other hand, nearby galaxies were relatively similar to our own. The Messier 60 Elliptical Galaxy. Credits: NASA, ESA and the Hubble Heritage -ESA/Hubble Collaboration “The mass of stars tells us astronomers a lot. If you change mass, you also change the number of supernovae and black holes that arise out of massive stars. As such, our result means that we’ll have to revise many of the things we once presumed, because distant galaxies look quite different from our own,” says Albert Sneppen, a graduate student at the Niels Bohr Institute and first author of the study.
This work has several important implications. For one, astronomer can no longer assume a uniform population of stars when looking at distant galaxies, which represent the
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