2011年4月12日星期二

Bizarre delay discovered stellar jets

PIA13929

Stellar nurseries are full of energetic phenomena such as stars of all sizes from the surrounding gas blend. It is no wonder that we find new and bizarre things in the star forming regions.

Take from both sides of the star for example these jets, baby. Although you these twin jets, be symmetric could accept, it seems as if there is a strange delay in above.

Great image: star forming spectacular Hubble's "Mystic mountain"

As form out the compact gas in stellar nurseries star, make it often hard disks of material (called accretion disks), the matter inwards towards the star, add to its bulk enable spiral. However is not all the gas as some it, due to strong winds stellar or material can be blown away by jets.

These jets can with the surrounding material at supersonic speeds, create a beautiful luminous Nebulosity collide. They have the name "Herbig Haro objects" after its co-discoverer.

Left in the image above we have seen 34 with very large telescope in Chile Herbig-Haro with visible light. Only jets can be seen, how the other is obscured by a dark cloud of dust. Dust is however no match for an infrared telescope, NASA's Spitzer Space Telescope study allowed astronomers of finally both jets from the star.

Great image: Herschel sees large stellar babies in the Rosette Nebula

The jets, shown on the right side of the upper image, are symmetric in almost every respect. The difference? Four days, apparently. Identical "node" in the Jets show up on one side than on the other 4.5 days later! This will help astronomers, limit these outbreaks make the size of the active region around the star produced. It can never be just a simple image.

This is the first time detected such delay. Since Spitzer its main mission, ended when the coolant ran as planned, the wavelengths of infrared light can no longer on the telescope. However, all data is archived and available to astronomers for decades k?mmbar, and other Herbig-Haro objects are among future work see if they also have delays more view.

Until we can travel in time in Dr who's TARDIS actually back, we will this baby Star use as a model for how our Sun was in the earliest days.

Image: A baby star jets, titled Herbig-Haro-34, in visible (left) and infrared light (right). Credit: ESO/VLT; NASA/JPL-Caltech






View the original article here

没有评论:

发表评论