Solar System was born in a shell made of material flung off a giant star called a Wolf-Rayet star.
They burn the hottest of all stars,producing tonnes of elements which are flung off the surface in an intense stellar wind.
As the Wolf-Rayet star sheds its mass,the stellar wind ploughs through the material around it,forming a bubble structure 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.
The researchers estimate that 1% to 16% of all sun like stars could be formed in such stellar nurseries.
Study addresses a nagging cosmic mystery about the presence of two elements in our solar system compared to the rest of the galaxy.
Meteorites left over from the early solar system suggests there was a lot of aluminium-26.In addition,studies increasingly suggest the solar system had less of the isotrope iron-60.According to prevailing theory solar system was formed billions of years agp near a supernova and supernovae produce both isotopes.It begs the question of why one was injected into the solar system and the other was not.
This brought the scientists to Wolf-Rayet stars,which release lots of aluminium-26,but no iron-60.
The life of Wolf-Rayet star ended long ago,likely in a supernova explosion or a direct collapse to a black hole.
They burn the hottest of all stars,producing tonnes of elements which are flung off the surface in an intense stellar wind.
As the Wolf-Rayet star sheds its mass,the stellar wind ploughs through the material around it,forming a bubble structure 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.
The researchers estimate that 1% to 16% of all sun like stars could be formed in such stellar nurseries.
Study addresses a nagging cosmic mystery about the presence of two elements in our solar system compared to the rest of the galaxy.
Meteorites left over from the early solar system suggests there was a lot of aluminium-26.In addition,studies increasingly suggest the solar system had less of the isotrope iron-60.According to prevailing theory solar system was formed billions of years agp near a supernova and supernovae produce both isotopes.It begs the question of why one was injected into the solar system and the other was not.
This brought the scientists to Wolf-Rayet stars,which release lots of aluminium-26,but no iron-60.
The life of Wolf-Rayet star ended long ago,likely in a supernova explosion or a direct collapse to a black hole.
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