Herschel telescope sees deep-space pearls on a cosmic string
October 3rd, 2009 - 1:19 pm ICT by ANI
- Washington, October 3 (ANI): The Herschel telescope has captured images of cold gas clouds lying near the plane of the Milky Way, a region that is dotted with stellar factories, like pearls on a cosmic string.
On September 3, Herschel aimed its telescope at a reservoir of cold gas in the constellation of the Southern Cross near the Galactic Plane.
As the telescope scanned the sky, the spacecraft’s Spectral and Photometric Imaging REceiver, SPIRE, and Photoconductor Array Camera and Spectrometer, PACS instruments snapped the pictures.
The region is located about 60 degrees from the Galactic Centre, thousands of light-years from Earth.
The five original infrared wavelengths have been colour-coded to allow scientists to differentiate extremely cold material from the surrounding, slightly warmer stuff.
The images reveal structure in cold material in our Galaxy, as we have never seen it before, and even before a detailed analysis, scientists have gleaned information on the quantity of the material, its mass, temperature, composition and whether it is collapsing to form new stars.
The images reveal a surprising amount of turmoil: the interstellar material is condensing into continuous and interconnected filaments glowing from the light emitted by new-born stars at various stages of development.
Stars form in cold, dense environments, and in these images, it is easy to locate the star-forming filaments that would be very difficult to isolate in a single-wavelength image.
Traditionally, in a crowded region like this, situated in the plane of our Galaxy and containing many molecular clouds along the line of sight, astronomers have had a difficult time resolving details.
But Herschel’s sophisticated infrared instruments made short work of the task, seeing through the dust that is opaque to visible light, and seeing the glow from the dust itself.
These observations are not possible from ground.
The result is a view of an incredible network of filamentary structures, and features indicating a chain of near-simultaneous star-formation events, glittering like strings of pearls deep in our Galaxy. (ANI)
Related Stories
- Herschel's first insight into space reveals spectacular results - Jul 11, 2009
- Astronomers unveil largest map of cold cosmic dust - Jul 02, 2009
- Herschel telescope obtains images of 'whirlpool galaxy' as first test observation - Jun 20, 2009
- 'Cosmic jewel box' captured in all its glory by three telescopes - Oct 30, 2009
- Largest ever telescope launched from French Guiana - May 15, 2009
- Gamma rays from "star factories" in galaxies other than Milky Way detected - Nov 03, 2009
- Giant cannibal galaxy observed having its "last meal" by astronomers - Nov 21, 2009
- NASA's Spitzer sees the cosmos through 'warm' infrared eyes - Aug 06, 2009
- New Hubble image showcases star birth in curving arms of nearby spiral galaxy - Nov 06, 2009
- World's largest space telescope aims to explore depths of the Universe - May 12, 2009
- array camera
- born stars
- cold gas
- cosmic string
- filaments
- galactic centre
- galactic plane
- gas clouds
- herschel telescope
- infrared instruments
- infrared wavelengths
- interstellar material
- light years
- line of sight
- milky way
- molecular clouds
- new stars
- southern cross
- spectrometer
- stages of development
Posted in Health Science, |