This image shows jets of extremely hot gas coming from a class 0 protostar. The gas lights up the surrounding gas as a Herbig-Haro Object.
Ever wondered what our young Sun might have looked like in its infancy some five billion years ago?
The Webb struggles to see the material in the jets. But the jets excite molecules in the surrounding gas like hydrogen, carbon monoxide and silicon monoxide. These excited molecules emit infrared light, which the JWST’s NIRCam instrument collected. Bow shocks are visible in the lower left and the upper right of the image. The JWST has the power to show us some of the knotty clumps in the visible bow shocks. We can also see the energetic jets coming from the star. They have a symmetrical ‘wiggly’ looking shape which indicates that the infant star might actually be a binary star. The wiggling is probably from the stars interacting gravitationally with one another.
Speeds are much lower where the outer parts of the outflows collide with the surrounding gas at the bow shocks. Since the material in the jets is so slow when it impacts the gas, there isn’t enough energy to break the molecules apart into their constituent atoms and ions. So the researchers concluded that the jets are molecular. In a more evolved protostar, the higher velocity of the jets would break the molecules apart.
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