Santa Cruz de Tenerife (EFE).- An international investigation, led by the Instituto de Astrofísica de Canarias (IAC) and the University of La Laguna (ULL), finds the first evidence of a massive galaxy without dark matter, which defies the current standard of cosmology.
According to an IAC note, this is the first time that a massive galaxy (with several times the mass of the Milky Way) has been found without there being evidence of this invisible component of the Universe.
“This result has no place within the current paradigm of the cosmological model with dark matter”, explains Sébastien Comerón, who has directed the research.
“Extremely Rare” Galaxy
The standard cosmological model postulates that massive galaxies contain large amounts of dark matter, a type of matter that is transparent and does not interact with ordinary matter, but whose existence can be inferred from the gravitational pull it exerts on stars and the gas, which is observable.
The note explains that NGC 1277 is known to be a prototype ‘relic galaxy’, that is, a galaxy that has not interacted with any of its neighbors.
These galaxies are extremely rare and are considered unevolved remnants of what were giant galaxies at the dawn of the Universe.
“The importance of relic galaxies in understanding how the first galaxies formed was the reason why we decided to observe NGC 1277 with an integral field spectrograph,” says Comerón.
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