Thursday, February 2, 2017

Starry cat-meets-cosmic lobster – Astro News

Tweet

astronomers have long studied the glowing cosmic gas and dust cloud catalogued as NGC 6334 and NGC 6357. new, huge photo belonging to the ESO VST telescope is just the latest. Photos about two billion pixels and is one of the greatest photos ever published ESO. Expressive shapes of clouds are the cause of easy to remember names: Cat’s paw Nebula and lobster Nebula.

NGC 6334 lies about 5500 light-years from Earth, while NGC 6357 is located farther, at a distance of 8000 light years. Both are visible in the constellation of Scorpio, close to the end of his jadowego spike.

as the first both said the British scientist John Herschel during his regular nights in June 1837, when he was on a three-year expedition to the Cape of Good Hope in Africa. In those days, the limited power of telescopes has allowed Herschelowi, who made observations of visually documenting the brightest parts of the Nebula Cat’s paw. Only decades later learned the true shape of the nebula in the photographs — and started to use the popular name.

Three prints of the feet are seen through a modern telescope, as well as resembling forceps region in the surrounding Nebula Lobster, are regions of gas, mostly hydrogen — pobudzanego the light from the bright, newly born stars. With a mass of about 10 solar masses, these hot stars emit intense ultraviolet light. When he stumbles upon the hydrogen atoms that are in the star of the incubator, which produced the stars, the atoms become ionized. Accordingly, a huge, cloud like objects that glow with light from hydrogen atoms (and other elements), known as emission nebulae.

Thanks to the power of 256-megapixel camera OmegaCAM, the image from the Very Large Telescope Survey Telescope (VST) shows a mustache, which is a light dust located in both mgławicach. Having 49511 39136 x pixels is one of the greatest photographs ever published in ESO.

OmegaCAM is the successor of the camera Wide Field Imager (WFI) currently installed at the 2.2-meter telescope MPG/ESO at La Silla. WFI was used to photograph the Nebula Cat’s paw in 2010, also in light of the noticeable but when you use a filter to better see the glow of hydrogen (eso1003). At the same time, the Very Large Telescope (VLT) took a deep the Lobster Nebula, showing many hot, bright stars that affect the color and shape of objects (eso1226).

Despite the use of observation most modern tools, the dust in mgławicach so thick that most of their content remains hidden. The Cat’s paw nebula is one of the most active areas of formation of stars in the night sky, wykształcającym thousands of young, hot stars whose visible light is unable to reach us. However, observing in the range of infrared radiation telescopes, such as VISTA can see through the dust and reveal activity gwiazdotwórczą.

Watching nebula different wavelengths (colors) of light, we have a variety of visual comparisons that can be associated with human observers. When we look at the longer infrared wavelengths, this is, for example, one of the fragments of NGC 6537 is reminiscent of a dove and the other the skull, so the nebula has received additional title: the Nebula War and Peace.

Source :

ESO

LikeTweet

No comments:

Post a Comment