Astronomers have found a giant «hamburger» in the constellation of Orion

© Photo : Yin-Chih Tsai/Ana star Burger HH212 in OrionAstronomers have found a giant «hamburger» in the constellation of Orion© Photo : Yin-Chih Tsai/ASIAA

. Scientists have discovered a newborn star, formed only 40 thousand years ago, and photographed a kind of «hamburger» of gas and dust surrounding it, according to a paper published in the journal Science Advances.

«We were extremely pleased that we were able to examine and consider the smallest details in the structure of very young disk accretion. We have decades of looking for these traces of the first phase of the formation of stars, the study of which will help us to understand how matter in a «hamburger» Kalevala in the new luminaries and planets,» says Cinfa Lee (Chin-Fei Lee) from the Institute of astronomy and astrophysics in Taipei (Taiwan).

Today scientists believe that all stars and planets are born in cold gas and dust nebulae, filled with neutral hydrogen, helium and dust. The gas in these nebulae are distributed unevenly, and after a while it starts to gather in dense clumps, a kind of «germ» of stars.

Inside their gas and dust gradually turned into a flat «pancake», the so-called accretion disk, the center of which is formed star, and on the outskirts of the planet. How occurs the disk, scientists still do not know, because he is born of the moment on a cosmic scale, and there are very short-lived.

Lee and his colleagues have found the first example of such a primary drive and found that at least in some cases, it does not look like a Russian pancake, and the American hamburger, studying the nebula in the L1630 Orion constellation, where some of the biggest «star nurseries» in the milky Way. Inside them are hundreds of new stars, and the scientists hoped that at least one of them will be young enough in order that around it there was a primary disk accretion.

Studying the lights with the help of the Chilean telescope ALMA, the most powerful microwave Observatory of the world, scientists found a star, HH 212, encountered only 40 thousand years ago, and distant from us only 1300 light years. Watching the movement of molecules of carbon monoxide and formaldehyde, scientists were able to learn how this accretion disk and how matter absorbed by the growing sun.

Contrary to expectations of scientists, the accretion disk was not spherical structure without any apparent projections, and a kind of «hamburger» in three parts – two oval «rolls» from a relatively rarefied of matter surrounding the star at the top and bottom, and a kind of «chops», a very cold layer of gas and dust between them.

The star gradually «eats» the space Burger from the inside, pulling the cloth in a spiral to form one Central part of the disk accretion. Over time, the density of matter reaches values suitable for the formation of planets, and HH 212 will appear one or more satellites.

While scientists do not know whether the presence of such structures for all stars, or HH 212 is no exception. As I hope Lee and his colleagues, the discovery of other primary accretion disk and the study of their structure will help us to find the answer to this question and to understand, how did the Sun and all other planets of the Solar system.

Source