Strange rings around protostar suggests planets form earlier than thought

[Admin]

Rings detected around a newborn star may suggest that planets are born earlier than previously thought, a new study finds.

Strange rings around protostar suggests planets form earlier than thought : Read more

 

[rod]

"The ALMA image of the young planet-forming dust rings surrounding the IRS 63 protostar, which is younger than 500,000 years old."

I found a number of reports on this interesting ALMA study of IRS 63. Apparently, no confirmed exoplanets are documented there at this time. The PDS 70 system has confirmed imaging of exoplanets in the disk, 'Astronomers confirm existence of two giant newborn planets in PDS 70 system', https://phys.org/news/2020-05-astronomers-giant-newborn-planets-pds.html

IRS 63, the amount of observed dust disk gas and estimated vary too. My observation. The system is 470 LY distance or 144.1 pc. 20 AU resolution ~ 140 mas at that distance from Earth. Also the total dust mass could be 15,900 earth masses but the 0.5 Jupiter size is only about 159 earth masses. 'Astronomers find evidence planets start to form while infant stars are still growing', https://phys.org/news/2020-10-astronomers-evidence-planets-infant-stars.html