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Wolf-Rayet star bubbles created Solar System? Here is how

As The Giant Star Shedded Its Mass, The Stellar Wind Ploughs Through The Material Around It Forming A Bubble Like Structure But With A Dense Shell.

News Nation Bureau | Edited By : Shambhudeep Hore | Updated on: 28 Dec 2017, 10:27:00 PM
The researchers estimate that 1 to 16 percent of all sun-like stars could be formed in such stellar nurseries. (Source: NASA)

New Delhi:

Speculations have no end when it comes to any theories related to the origin of the universe or the solar system.

A new research reveals that it is quite probable that the entire solar system was formed out of bubbles that produced by a star that was long dead and with a size assumed to be about 40-50 times the sun.

The theory explained in the Astrophysical Journal rejects the prevailing held theory that the solar system was formed near supernova some billions of years back.

This kind of theories only gives rise to the question that whether scientists around the world are ever going to come to an agreement regarding the origin of the solar system.

The massive dead star from which the bubbles are assumed to have emerged is called a Wolf-Rayet star.  As the giant star shedded its mass, the stellar wind ploughs through the material around it  forming a bubble like structure  but with a dense shell.

“The shell of such a bubble is a good place to produce stars,” because dust and gas become trapped inside where they can condense into stars, said study co-author Nicolas Dauphas, Professor at University of Chicago in the U.S.

The researchers estimate that 1% to 16% of all sun-like stars could be formed in such stellar nurseries.

Study reveals that meteorites left over from the early solar system has lot of Aluminium-60. In addition the solar system had less of the isotop iron-60. Supernovae produce both isotopes.

“It begs the question of why one was injected into the solar system and the other was not,” said co-author Vikram Dwarkadas from the University of Chicago.

This brought the scientists to Wolf-Rayet stars, which release lots of aluminium-26, but no iron-60. The Wolf-Rayet star is believed to have ended like a supernovae explosion or a direct collapse of the black hole. 

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First Published : 28 Dec 2017, 06:51:27 PM

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