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Last year, scientific circles were overwhelmed by reports of a galaxy claiming to contain no dark matter. Current theories argue that dark matter is fundamental to causing the collapse of gas and forming stars in galaxies. A new article published by researchers at the Instituto de Astrofísica de Canarias (IAC) claims to have solved the mystery.
IAC scientists claim that after performing a full series of KKS2000 observations]04 (NGC1052-DF2), formerly called "the galaxy without dark matter", they solved the mystery. The team said that the parameters dependent on the distance of the galaxy were abnormal, the team revised the distance indicators.
The team used five different distance indicators taken with five independent methods to estimate the distance of the galaxy. The team found that all coincided with one conclusion: the galaxy is much closer to the value presented in previous research. The team claims that the original article on the galaxy uses a distance of 64 million light-years from Earth.
According to the IAC team, the galaxy would be much closer to about 42 million light years away. When the calculations were rerun on the new distance, the galaxy is now considered normal and corresponds to the observed trends of galaxies with similar characteristics.
The team says the new data has revealed that the total mass of this galaxy is about half of the previously estimated mass. The mass of the star is only about one quarter of the previously estimated mass. New discoveries imply that a significant part of the total mass of the galaxy must be made up of dark matter. The team says the new work shows the importance of a correct measurement of extragalactic distances.
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