Dense 'hot spots' on a young star reveal what Earth's sun may have looked in its infancy

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Astronomers may have captured the best view yet of matter colliding with the surface of a young star, findings that may shed light on what the sun looked like in its youth.

Dense 'hot spots' on a young star reveal what Earth's sun may have looked in its infancy : Read more

 

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Reference paper, Measuring the density structure of an accretion hot spot, https://www.nature.com/articles/s41...45_deeplink_PID100052171&utm_content=deeplink, 01-September-2021.

That is quite a paper. My observation. The accretion rate of 1.1 x 10^-8 Msun yr^-1 indicates that it would take about 9.09 x 10^7 years to accrete one solar mass star at that growth rate. Certainly not something claimed for many new stars and the time for them to evolve in different places in the galaxy today. For this star at 1.36 Msun, the accretion growth time using the rate published is 1.236 x 10^8 years. The star is said to be 2 million years old so the early and initial accretion growth rates must have been much higher and faster. The spin rate for this star is faster than 16 km/s. at 6.1 day period according to the paper. Presently our Sun spins near 2 km/s at the solar equator and no observed *accretion hot spots* from gas and dust nearby