Kharkiv astronomers have created a unique catalogue of the milky way


Харьковские астрономы создали уникальный каталог Млечного путиThe new directory will allow you to answer the question as the moving stars in the space of our galaxy.

The Kharkiv group of astronomers led by Professor of the Institute of astronomy of Kharkiv national University. V. Karazin, a member of the International astronomical Union Pyotr Fyodorov has completed work on a private directory of the milky way.

“A distinctive feature of our directory is that it contains absolute proper motions of stars. This is the first and only directory with so many absolute proper motions.

Today is, of course, catalogs and more, but they contain relative proper motion of the stars, i.e. they are determined relative to a known reference system. Their task is to reproduce the system of reference in which they are received,” – said Fedorov. The scientist noted that the proper motions of stars created by the relatively extended extragalactic sources — galaxies – and, together with its provisions to implement a new (independent) frame of reference. This is their essential difference from the relative.

Also, according to astronomers, the new catalogue contains approximately the same number of objects as a catalog of “Gaia”. But in contrast, will contain the absolute proper motions of stars derived from observations from the Earth, at that time, as the telescope “Gaia” performs observations in space. See also Astronomers have measured the supermassive black hole in the center of the milky way “In this sense, these two array data did not correlate among themselves and are completely independent. Since the objects of study are the same, then the difference between their own movements are a very important source of new information, mainly related to the movement of our planet, which will allow us to more reliably establish a link between the terrestrial and celestial reference systems,” – said Fedorov.

New directory HRM-2 has already been used to study the kinematics of the milky way, which will allow to answer the question of how to move stars in his space. “The use of data from our catalogue, are likely to look much deeper into the galaxy, to understand, moving only under the influence of gravitational forces or be under the influence of those forces which today are associated with dark energy, or dark matter, to answer the question of how to move stars in different spectral classes, etc. And when we learn how there is a movement, by what laws, then we can answer the question of why they move,” adds the researcher.

Fedorov also stressed that the indirect application of the exercises are obvious: improvement of satellite navigation systems, optimization of the calculated trajectories of the motion of bodies both on Earth and in space, mineral exploration, and even earthquake prediction.

“But still, I believe that it is not important. The obtained results are of fundamental nature, completed work will be very useful not only for astronomy in General, but also for the formation of worldview universals, the development of understanding of the world, helping people to survive in our critical situations,” summed up the Professor of astronomy.


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