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Oxygen found in a distant galaxy

26.06.2016

At a distance of 13,1 billion light years from Earth, astrophysicists from Japan, Sweden, Great Britain and Germany have found a galaxy in which the relative proportion of oxygen is only ten times less than that of the Sun.

Galaxy SXDF-NB1006-2 was discovered in 2012 by the Subaru telescope, part of the National Astronomical Observatory of Japan (NAOJ). Scientists recorded the emission from hydrogen, and subsequent observations made using the Chilean observatory ALMA (Atacama Large Millimeter Array) made it possible to learn more about the galaxy.

The galaxy, at a distance of 13,1 billion light-years from Earth, is not only the most distant known to date, but also the only one containing a relatively large amount of oxygen: ten times less than that of the Sun. At the same time, there is no cosmic dust there, which can be explained by the explosion of a supernova, or by the absence of cold dense clouds in the interstellar medium.

A detailed study of SXDF-NB1006?2 makes it possible to expand knowledge about the period of the development of the Universe, which lasted from 0,38 to 550 million years after the Big Bang. It has the name "Dark Ages": at that time there were no stars, quasars and other bright sources; The universe was filled with relic radiation, radiation of atomic hydrogen at a wavelength of 21 cm, hydrogen and helium.

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Soleriq S 13 creates an exceptional opportunity for building lighting systems, especially in the professional sector of lighting systems, thanks to its brightness of 1500 lm and a light emitting surface with a diameter of 13,5 mm. They are installed in LED fixtures or lamps instead of high power halogen lamps. "Soleriq S 13 is designed for both professional and home lighting applications because it covers all color temperatures along with high brightness. In addition, the color rendering index of this LED for all color temperatures exceeds 80. As a result, Soleriq S 13 greatly expands the scope of the Soleriq LED family, since the previously introduced E 30 and E 45 diodes of this family were only for ceiling luminaires," explains Andreas Vogler, Marketing Manager of the General Lighting Systems Department, who is responsible at Osram Opto Semiconductors for the Soleriq LED family.

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