chaotic star system reveals planet formation secrets

Dragon

Dragon: Senior Administrator; Posts : 10650
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Post n°1

chaotic star system reveals planet formation secrets

Post by Dragon Sat Jun 19, 2021 2:40 am

A team of scientists using the Atacama Large Millimeter/submillimeter Array (ALMA) to study the young star Elias 2-27 have confirmed that gravitational instabilities play a key role in planet formation, and have for the first time directly measured the mass of protoplanetary disks using gas velocity data, potentially unlocking one of the mysteries of planet formation.

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chaotic star system reveals planet formation secrets 334pu7m

Dragon

Dragon: Senior Administrator; Posts : 10650
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Post n°2

Re: chaotic star system reveals planet formation secrets

Post by Dragon Sat Jun 19, 2021 2:41 am

chaotic star system reveals planet formation secrets Study-of-young-chaotic

Credit: ALMA (ESO/NAOJ/NRAO)/T. Paneque-Carreño (Universidad de Chile), B. Saxton (NRAO)

Using gas velocity data, scientists observing Elias 2-27 were able to directly measure the mass of the young star\u2019s protoplanetary disk and also trace dynamical perturbations in the star system.

Visible in this paneled composite are the dust continuum 0.87mm emission data (blue), along with emissions from gases C18O (yellow) and 13CO (red).

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chaotic star system reveals planet formation secrets 334pu7m

Dragon

Dragon: Senior Administrator; Posts : 10650
Points : 31561
Times User Thanked: : 1255
Join date : 2018-01-18

Post n°3

Re: chaotic star system reveals planet formation secrets

Post by Dragon Sat Jun 19, 2021 2:43 am

chaotic star system reveals planet formation secrets Study-of-young-chaotic-1

Credit: B. Saxton NRAO/AUI/NSF

Elias 2-27 is a young star located just 378 light-years from Earth.

The star is host to a massive protoplanetary disk of gas and dust, one of the key elements to planet formation.

In this graphic illustration, dust is distributed along a spiral-shaped morphology first discovered in Elias 2-27 in 2016.

The larger dust grains are found along the spiral arms while the smaller dust grains are distributed all around the protoplanetary disk.

Asymmetric inflows of gas were also detected during the study, indicating that there may still be material infalling into the disk.

Scientists believe that Elias 2-27 may eventually evolve into a planetary system, with gravitational instabilities causing the formation of giant planets.

Because this process takes millions of years to occur, scientists can only observe the beginning stages.

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chaotic star system reveals planet formation secrets 334pu7m