Stunning image from James Webb: A young star blasting supersonic jest

September 15, 2023  22:20

In a remarkable display of cosmic beauty, NASA's James Webb Space Telescope (JWST) has unveiled captivating images of star matter jets erupting from a youthful celestial inhabitant. These jets, collectively known as Herbig-Haro 211 (HH 211), are hurtling through space at supersonic velocities, shedding light on some of the most potent phenomena in the cosmos.

Situated approximately 1,000 light-years away from Earth in the constellation Perseus, HH 211 resides in an energetic celestial realm. Here, a protostar is actively drawing in surrounding gas and dust as it grows, simultaneously expelling material into space, creating what astronomers term a bipolar outflow. The JWST's infrared prowess has allowed it to capture the vivid, colorful interactions between these jets and interstellar matter.

Although the protostar itself remains concealed in Webb's imagery, it is suspected to be a binary star system and is believed to resemble the early stages of our own Sun when it was a mere few tens of thousands of years old, possessing only 8% of its current mass. JWST representatives remarked, "It will eventually grow into a star like the sun," in a statement released on Thursday, September 14th.

Herbig-Haro 211 (HH 211).JPG (45 KB)

HH 211 stands as one of the youngest and closest examples of a nascent star ejecting matter, making it an ideal subject for JWST observation. The telescope's unparalleled infrared capabilities enable astronomers to peer through dense veils of gas and dust enshrouding young stars. This breakthrough access empowers scientists to decode the chemical composition and behavior of these obscured celestial bodies.

Through an analysis of data collected by the Near Infrared Spectrograph (NIRSpec) instrument aboard the JWST, researchers have made a groundbreaking discovery. They found that the jets emanating from young stars are notably slower and enriched with molecules like carbon monoxide, silicon monoxide, and molecular hydrogen compared to the swifter jets expelled by older stars. This difference arises primarily from the fact that the shock waves surrounding the young star have not yet gained sufficient strength to disintegrate the jet's molecules into individual atoms.

HH 211 belongs to a class of celestial objects known for their rapid evolution, with swirling gas formations disappearing just a few years after detection, only to reappear in seemingly empty regions of space. These findings mark a significant advancement in our understanding of the cosmos, shedding light on the dynamic processes unfolding in the cradles of young stars.

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