Sunday , April 11 2021

Scientists, thanks to ALMA, discover the stains in the form of traces of Technology



Scientists have discovered thanks to the astronomical device Atacama Large Millimeter Array (ALMA) spots forming signs.

Three Chilean astronomers, all of whom were members of the CATA Center for Astrophysics and Related Technologies, participated in the international study. The study analyzed 20 star constellations in the constituent regions of Ophiuchus and Lupus.

"Thanks to the wonderful resolution that ALMA gives us, we quickly saw that stars are formed from planets in the early stages of life. In addition, thanks to the data obtained, we could clearly see that this process leaves a footprint "explained Laura Perez, astronomer of astronomy at the Faculty of Physics and Mathematics at the University of Chile.

The most commonly found traces were "rings and, to a lesser extent, asymmetry and spiral arms". Particularly, Pérez studied the disc, which "showed that the closest neighbor to the nearest star was inappropriate in relation to the outer zone, although it could only happen in the presence of a huge planet, something like the 10 times Jupiter."

Another result was explained Nicolás Troncoso, a student at the Magister in Sciences speaks of astronomy at the FCFM from the University of Chile.

"When the stars and planets appear around them, interacting with the binary partner can have a powerful effect on the planet's birth process," he said.

"We were able to see this interaction for the first time, and we discovered that stars are striking against each other and their protoplanetary disk, creating a whole solar material and spiral exchange," added a young scientist.

A lot of work

To achieve this, more than 65 hours of observation of ALMA required 17 astronomers and 5 countries to support 10 different scientific publications published in a special edition of the scientific journal Astrophysical magazine letters.

"As we gained data we have calibrated for more than 6 months, remembering the effects of the atmosphere, creating the highest possible quality images, and then mastering them. We use mathematical models, we describe the structures that appear on these new star's disks. Obtaining this kind of information was crucial to compare with the theoretical simulation, thus understanding what physical processes are occurring in the disks "explains Troncoso.

Scientists agree that this finding allows us to conclude that the larger planets with dimensions and compositions that resemble the forms of Neptune or the Saturn are fast; in fact, much faster than the postulate of the current theory. They also tend to form within the limits of their solar system, far from the star of their host

next step

For Viviana Guzmán, the academic staff of the Institute of Astrophysics at the University of the Catholic University of Chile and the author of this study, the next step is to "observe the gaseous component of this protoplanetary disk. We have a large 130-hour observation program in which we are planning a biological molecule (containing carbon, oxygen and nitrogen). which will allow us to study in detail the initial chemical conditions of these planetary systems. Data reduction, analysis and writing should take about 6 months.

For more information on disclosure, review the ALMA published original notice, you can access this link.


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