ALMA telescope in the constellation of the Wolf recorded the birth of stars and planets


03/01/2013

The simultaneous formation of the star HD 142527, located in the constellation of the Wolf and its surrounding planets fixed radio telescope ALMA, which subsequently helped scientists figure out how the matter of the protoplanetary disk is moved to the star, in spite of the large distance between them, according to a paper published in the current issue of the journal Nature.

The planets and the stars, according to scientists, are born as a result of gravitational collapse of the densest parts of the nebula of gas and dust. Flushing, "embryo" luminary warms located close to it part of the protoplanetary disk, removing the limits of a future star system remains of gas and dust. However, the weight of the star continues to rise, and this process is, in fact, a kind of scientific mystery.

The team of astrophysicists led by Simon Kasassusa of the University of Chile in Santiago seems to have found the answer to this question in detail studied the young star HD 142527, which is located at a distance of 450 light-years from Earth in the constellation of the Wolf by another unfinished telescope ALMA.

Kasassus and his colleagues found that a gap exists between the young star and protoplanetary disk is filled with rarefied layer of gas. This is evidenced by the presence of molecules of carbon monoxide (CO), their radiation was "caught" telescope.

Scientists have also found inside the spiral disk of gas flows, clearly indicating the existence of protoplanetary bodies or these planets. Type of movement of flows of matter suggests that the planets, increasing the mass, "pull together" it on yourself.

Such a process, as scientists say, allows the star to "grow" on and off at the same time prevent its ruin protoplanetary disk radiation. According to calculations by the authors, delivered the planet’s future gas volume is enough to explain the current growth rate of star.

Kasassus and colleagues, revealing a secret birth of star systems, we decided to check in using a computer model of what would happen to a protoplanetary disk in the absence of gas. HD 142527 in this case would destroy the disk during the year, resulting in the growth of the system would be stopped.

This gives the opportunity to speak about the extreme importance of this process for the formation of full-fledged planets and stars. In the spring of 2013 she plans to hold another set of observations, then, as expected, ALMA construction is completed. More accurate data will help scientists ’weigh’ planets, the very stars in the system HD 142527.


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