Ficheru:Hubble Sees a Stellar "Sneezing Fit" (11467249715).jpg
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English: Look at the bright star in the middle of this image. It appears as if it just sneezed. This sight will only last for a few thousand years — a blink of an eye in the young star's life.
If you could carry on watching for a few years you would realize it's not just one sneeze, but a sneezing fit. This young star is firing off rapid releases of super-hot, super-fast gas, like multiple sneezes, before it finally exhausts itself. These bursts of gas have shaped the turbulent surroundings, creating structures known as Herbig-Haro objects. These objects are formed from the star's energetic "sneezes." 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 kilometers/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 our sun. This region is actually home to several interesting objects. The star at the center of the frame is a variable star named V633 Cassiopeiae, with 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 neighbor'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. |
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| Fonte | https://www.flickr.com/photos/gsfc/11467249715/; see also http://www.spacetelescope.org/images/potw1350a/ |
| Autor | ESA/Hubble & NASA, Acknowledgement: Gilles Chapdelaine |
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ESA/Hubble images, videos and web texts are released by the ESA under the Creative Commons Attribution 4.0 International license and may on a non-exclusive basis be reproduced without fee provided they are clearly and visibly credited. Detailed conditions are below; see the ESA copyright statement for full information. For images created by NASA or on the hubblesite.org website, or for ESA/Hubble images on the esahubble.org site before 2009, use the {{PD-Hubble}} tag.
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Este archivo está disponible bajo la licencia Creative Commons Atribución 4.0 Internacional.
Reconocimientu: ESA/Hubble
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Esta imagen que fue publicada originalmente en Flickr por NASA Goddard Photo and Video en https://flickr.com/photos/24662369@N07/11467249715. Ha sido revisada el 2016-10-13 18:51:40 por FlickreviewR, quien confirmó que estaba autorizado bajo los términos de la cc-by-2.0, que es compatible con Commons. Sin embargo, no es la misma licencia que la indicada anteriormente, y se desconoce si esa licencia alguna vez fue válida. |
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