The biggest ‘river’ of stars ever noticed has been found: ten occasions longer than the Milky Manner, it’s the just one identified to date to run in intergalactic area. Referred to as ‘Large Coma Stream’, it has been situated within the Coma cluster, a cluster of galaxies situated about 350 million light-years away within the route of the Coma Berenices constellation. The invention, which can supply new concepts for investigating darkish matter, is printed within the journal Astronomy & Astrophysics by a world group led by Javier Román, working between the College of Groningen (Netherlands) and the College of La Laguna in Tenerife (Spain).
The researchers got here throughout the river of stars fairly by chance whereas finding out star halos situated round giant galaxies. The primary observations had been made with astronomer Michael Wealthy’s 70-centimeter telescope in California. Subsequently, the 4.2 meter William Herschel telescope situated in La Palma was used. As soon as the photographs had been processed, the researchers had been in a position to spot an especially faint stream of stars, which seems to be floating in the course of the cluster, not related to any explicit galaxy.
The invention is essential as a result of it’s not straightforward to seek out such fragile constructions in hostile environments, the place galaxies appeal to and repel one another. The researchers have additionally computer-simulated comparable streams of stars and look forward to finding extra, because of the long run Extraordinarily Massive Telescope in Chile and the Euclid area telescope. With these telescopes in addition they intend to additional examine the Large Coma Stream itself, to watch particular person stars in and close to the stream and study extra in regards to the darkish matter it accommodates.
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