Astronomers discover baby planets taking their 1st steps in nearby stellar nursery (images)
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(Main) Pictures of Protobalite CDs in the Ophiuchus Stars. (Inteline) A clarification drawing to choose from the birth planet around a young star. | Credit: Alma (ESO/NAOJ/NRAO), A. Shoshi et al/Robert Lea (created with Canva)
Astronomers may have discovered the early stages of the planets generated around the stars of infants.
This discovery came when a team of scientists studied 78 clouds of gas and dust, or “Protobbali tablets”, in the stars formation area. This star nursery, also known as the name Rho ophiuchi Cloud Complex is about 460 Light years From the earth, which makes it the closest region to form stars to Solar energy system.
The team previously discovered invisible episodes, Lausal and others Planet’s formation clouds About a number of stars only a few hundred thousand years. If this looks old, then think about this: our middle -aged star is 4.6 billion years old.
The team’s results indicate that the stars and planets develop together in gas and dust -rich environments.
Investigate the joint development of planets and stars
The stars were born When the dense areas are called excessively in the vast clouds of gas and dust Molecular clouds The collapse is under their weight. This collapse creates a protestar wrapped in a prenatal envelope for the materials that continue to collect the mass.
This harvest continues until the star becomes huge enough to pay Hydrogen integration into helium In the heart of the star, the nuclear process that determines what it fully has or The main sequence star He is.
The end result is a young star surrounded by a gas and dust disk through which the planets can begin. When the planets begin to crystallize these tablets, it can combine the effect of gravity or material output. This process leads to infrastructure in Protoplanite tablet.
However, the big question is: at what point in the development of the systems of planets that begin these basic structures to appear?
A comparison of the pictures of protein tablets in the Ophuchus stars, which are created with high -precision photography with sporadic modeling versus traditional photography. The development phase of the central stars is from left to right, and from top to bottom in the same row. | Credit: ESO/NAOJ/NRAO), A. Shoshi et al.
This is a question that astronomers try to answer using ATACAMA Big ML/Submillimter (Alma), a group of 66 antennas in northern Chile working together to work as a single telescope.
In particular, two large programs conducted by Alma, DSHARP and Edisk discovered complex details of the structures in the protoplantis tablets.
DSHARP found that such structures are common in tablets surrounding 20 young stars less than a million years. Meanwhile, Edisk studied the youngest protocoarat, between the ages of 10,000 and 100,000 years, and therefore still in the harvest. This revealed that the structures that offer about a million stars, a million stars, are absent around the stars 10 and 100 times younger.
This means that the properties of the protoplatum discs depend on the era of its central star.
An explanation of the infrastructure formed in a protoplani disk. | Credit: Y. Nakamura, A. Shoshi et al.
The new study team looked at the stars between the ages of those who were studied in DSHARP and Edisk programs, and to shift to high -precision photography provided by public programs called “Python Modole for Radio Tebevertry Imaging with sporadic modeling”, or (PRISM), and applied this to Alma Archival data.
This allowed researchers to obtain a three -time larger decision of the standard procedures for half of the pictorial discs. The team’s results were further strengthened by the fact that the Ophuchus sample was four times larger than it was used in DSHARP and Edisk programs.
The investigation revealed 27 out of 78 tablets that were examined had a bullish or spiral structures, 15 of which were previously unprecedented.
These basic structures have been revealed in tablets that have a width 30 times The distance between the earth and the sun (30 astronomical units). This, in turn, means that the preparatory structures are formed much earlier than previously thought – while these tablets are still abundant with gas and dust.
In other words, it appears that the stars and planets of infants are developing together – at least, in the Ophuchus Stellar nursery.
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“These results, which bridge the gap between Edisk and DSHARP projects, have been enabled through innovative photography that allows both high accuracy and a large number of samples,” said Ameo Shuchi, captain and researcher at Kyushu University. statement. “While these results are only related to the tablets in Ophuchus, future studies of other regions that make up stars will reveal whether this trend is global.”
The team’s research was published in Publications of the Astronomical Society in Japan
