Star “persecuted” for 18 years – The Universal

 An international team of scientists, led by the Spanish Carlos Carrasco-Gonzalez, “persecuted” for 18 years to a massive star and achieved real-time observation of the early stages of their Evolution .
 

 

 Although the star formation process takes hundreds of thousands of years, researchers have managed to capture the gestation of a supersonic gas jet, also called “jet”.
 

 

 To do this, they used two images taken by the Large Array radio telescope Vary (VLA) in 1996 and 2014, plus information from many observations obtained during 18 years.
 

 

 The examined region is known as W75N and what led between 1996 and 1999 to José María Torrelles, Guillem Anglada and José Francisco Gómez (CSIC and signatories of this paper) to study was that contained many massive star formation .
 

 

 Among other things, they found that the star W75N (B) -VLA2 behaved very peculiar way, with a little collimated wind (the material away from the star in many directions) while the familiar or the others who were in the same region were highly collimated winds (the material exits in a single direction).
 

 

 Years later, Carrasco-González, now at the National Autonomous University of Mexico in Morelia, also began to study the interested area on the stars with wind, “and there it was again VLA2, still evolving very strangely,” said .
 

 

 In 2013, researchers decided to pool the data on VLA2 and further observations.
 

 

 Thus, they concluded, as is now described in the journal Science, which W75N (B) -VLA2, 4000 located 200 light-years from Earth, has dramatically changed the way in which ejects matter, from virtually do to adopt an elongated spherical shape, with concentrated along one direction of ejection.
 

 

 Current theories predict that the young stars must eject matter in the form of collimated jets (in one direction).
 

 

 Guillem Anglada, the Institute of Astrophysics of Andalusia, explained, however, that previous studies had seen some very young massive stars go through brief episodes in which eject matter in all directions, according to the CSIC.
 

 

  “We suspected that at some point the transition should occur at the stage of collimation. This transition is precisely what we are witnessing in W75N (B) -VLA2″.
 

 

 For Carrasco, this work helps to understand how stars form and in particular how the more massive than our Sun. stars form.
 

 

 The stars are initially formed as balls of gas very little mass (much less massive than our Sun) and will grow by incorporating material from its surroundings.
 

 

 “One of the most important things we learned is that a fundamental aspect is the collimated winds. The stars need for disc material can fall on them,” said Carrasco.
 

 

 “Understanding how the winds work gives us important information about how stars and planets form.”
 

 

 
 

 

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