Scientists have found more than 800 galaxies ultratemnyh- A team of astronomers from the University of Stony Brook (New York, USA) and the National Astronomical Observatory of Japan, opened in 2014, more than 840 so-called ultratemnyh galaxies in the Coma Cluster. This left a message on the website of the scientific organization. Proceedings are summarized in the article, which is accepted for publication in the journal Astrophysical Journal Letters, and a copy is available on the website Arxiv.org.
The study was conducted on the 8.2-meter Subaru Telescope in Hawaii (USA). About 40 percent of detected galaxies are comparable in size to ours - the Milky Way - but contain far fewer stars and emit much less light. Their weight ranges from 10 to 150 million solar, which is about four to five orders of magnitude (10 000 -100 000 times) less than that of our galaxy.
The study of the distribution of galaxies in the cluster ultratemnyh showed that the proportion of baryonic matter in their mass is about 1 percent, which is much less than the average in the universe. This suggests that they are held together by very massive structure, which may consist of dark matter, which is already more than 20 years unsuccessfully looking for scientists.
Scientists have suggested that the mass detection ultratemnyh galaxies shows that they are also present in other clusters in greater numbers than previously. Object detection will not only look dark matter, but also provide an opportunity to study the processes of evolution of galaxies. In particular, scientists have clarified the position for star ultratemnyh galaxies in the Hertzsprung - Russell (they show the ratio of the spectrum and luminosity of the star), which objects exist for a long time. Scientists have suggested that the stars were not able to perform its normal cycle of evolution, since the interstellar gas is required for this process can be blown out of galaxies, supernova explosions, the pressure of the inter via dailymail.co.uk