Globular clusters might be younger than we thought


“Determining ages for stars has always depended on comparing observations to the models which encapsulate our understanding of how stars form and evolve,” stated lead author Elizabeth Stanway of the University of Warwick’s Astronomy and Astrophysics Group in apress release “That understanding has changed over time, and we have been increasingly aware of the effects of stellar multiplicity — the interactions between stars and their binary and tertiary companions.”

BPASS designs have actually formerly been utilized to effectively identify the age of young outstanding populations, both within the Milky Way and in incredibly far-off galaxies, however even with this age modification, globular clusters are still old. The next action, Stanway stated, is to take a look at neighboring globular clusters where specific stars can be seen (distant clusters simply appear like fuzzy balls, so all astronomers need to deal with is the overall light from all their stars together). Studying neighboring clusters in much better information and comparing these outcomes with the BPASS designs need to expose the precision of the designs and this brand-new age measurement.

But“If true,” she stated, “it changes our picture of the early stages of galaxy evolution and where the stars that have ended up in today’s massive galaxies, such as the Milky Way, may have formed.”



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