Hubble discovers star “sneezing” out super-hot, super-fast gas

Hubble discovers star “sneezing” out super-hot, super-fast gas

12:23 PM, 30th December 2013
Hubble discovers star “sneezing” out super-hot, super-fast gas
© scitechdaily.

WASHINGTON DC, US: Hubble space telescope has discovered a star in the midst of a sneezing fit. The star called V633 Cassiopeiae is firing off rapid bursts of super-hot, super-fast gas, like multiple sneezes, before it finally exhausts itself, Nasa said in a statement.

V633 Cas is a relatively young variable star. It means that light from the star as seen on Earth appears to vary in brightness. This variation may be caused either by some intrinsic features or it may be because of external clouding or spinning.

The bursts of gas have shaped the turbulent surroundings into sneeze-like structures known as Herbig-Haro objects. Launched due to magnetic fields around the forming star, these energetic releases can contain as much mass as our home planet, and cannon into nearby clouds of gas at hundreds of kilometres/miles per second. Shock waves form, such as the U-shape below this star. Unlike most other astronomical phenomena, as the waves crash outwards, they can be seen moving across human timescales of years. Soon, this star will stop sneezing, and mature to become a star like the Sun.

This phenomenon will only last for a few thousand years - a blink of an eye in the young star’s life, Nasa said. As gas keeps getting blown out, the whole thing looks like a sneezing fit.

This region is actually home to several interesting objects. V633 Cassiopeiae has the two Herbig-Haro objects HH 161 and HH 164 forming parts of the horseshoe-shaped loop emanating from it. The slightly shrouded star just to the left is known as V376 Cassiopeiae, another variable star that has succumbed to its neighbour’s infectious sneezing fits; this star is also sneezing, creating yet another Herbig-Haro object-HH 162. Both stars are very young and are still surrounded by dusty material left over from their formation, which spans the gap between the two.


© TNN News



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