Captan for the first time snow level extraterrestrial water (VIDEO) – lagranepoca

illustration line snow water around the young star V883 Orionis, as the ALMA detected. / A. Angelich / ALMA

The young stars are often surrounded by dense spinning disks of gas and dust, called protoplanetary disks, of which planets are born. The heat of a young sunlike star makes the water within protoplanetary disks is in the form of gas up to distances of about 3 astronomical units (AU) from the star -less than 3 times the average distance between Earth and Sol- or about 450 million kilometers.

also, due to the extremely low pressure, water molecules pass directly from the gaseous state to form a coating of ice on dust grains and other particles. The region of protoplanetary disks in which the transitions between the gas phase and the solid take place is known as the snow line.

But the star V883 Orionis is unusual . A new study, published in Nature, reveals that a shocking outbreak has pushed the snow line at a distance of about 40 AU, some 6,000 million kilometers, or about the size of the orbit of the dwarf planet Pluto.

the explosion has been an increase in brightness which, combined with the resolution of the radio telescope ALMA (Chile), has allowed a team of researchers to make the first observations in which settlement of a snowline of water in a protoplanetary disk.

the surge experienced by V883 Orionis light is an example of what happens when large amounts of disc material surrounding a young star fall on its surface. V883 Orionis is only 30% more massive than the Sun but thanks to this outbreak, is now 400 times more luminous and much hotter

“The observations were designed to produce images of disk fragmentation that It leads to the formation of the planet. We did not see any of that; Instead, we find what looks like a ring 40 UA “explains lead author Lucas Cierza researcher Millennium ALMA Disk Nucleus and the Universidad Diego Portales (Chile).

The presence of snow orbiting space is essential for the formation of planets because it regulates the effectiveness of coagulation of dust grains, the first step in forming planets.

it is believed that the rocky planets and small, like ours , they form within the snow line, where the water evaporates. Outside it, the presence of water ice allows rapid pilling of cosmic snow, which eventually form huge gaseous planets like Jupiter.

Discovering that these bursts can push the snowline water about ten times its typical radio is very important for the development of good models of planetary formation.

it is believed that such explosions are a stage in the evolution of most planetary systems, so this it may be the first observation of a common event. In that case, this observation of ALMA could contribute significantly to a better understanding of how the planets formed and evolved throughout the universe.

Original article here.