james webb space telescope The team said Thursday that scientists spotted dozens of energy jets and outflows from young stars previously hidden in dust clouds in one of the $10 billion observatory’s iconic first images. Announced.
NASA said in a release that the “rare” discoveries, including a paper published this month in the Royal Astronomical Society’s monthly notice, mark the beginning of a new era in the study of star formation and radiation from nearby massive stars. said. It can affect planetary development.
Carina Nebula Cosmic Cliffwithin star cluster NGC 3324, is seen at Webb and New Wavelengths, and the telescope’s capabilities will allow researchers to track the movements of other features previously captured by the Hubble Space Telescope.
Astronomers analyzing data from specific wavelengths of infrared light have discovered 20 unknown outflows from very young stars revealed by molecular hydrogen.
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This new image of the Cosmic Cliff from NASA’s James Webb Space Telescope’s Near-Infrared Camera (NIRCam) reveals dozens of previously hidden jets and outflows from young stars. This image separates several wavelengths of light from the first image, released July 12, 2022, and highlights molecular hydrogen, a key component of star formation. The inset on the right highlights his three regions of the Cosmic Cliff, where the outflow of hydrogen molecules is particularly active. In this image, red, green, and blue were assigned to his Webb’s NIRCam data at his 4.7, 4.44, and 1.87 microns (his F470N, F444W, and his F187N filters, respectively).
(Credits: NASA, ESA, CSA, and STScI; image processing: J. DePasquale (STScI))
Molecular hydrogen is an essential component of star formation and is a good way to track the early stages of that process.
“When young stars collect matter from their surrounding gas and dust, most stars re-eject some of that matter from the polar regions as jets or outflows. These jets act like snowplows, We bulldoze it into the surrounding environment, and observations of the visible web show hydrogen molecules being swept away and excited by these jets,” NASA explained.
Objects discovered: include a “small fountain” and a “blurring behemoth that extends light-years from a forming star”.
An image of the Cosmic Cliff, the region at the edge of a large gaseous cavity within NGC 3324, captured by Webb’s near-infrared camera (NIRCam). Use compass arrows, scale bars, and color keys for reference. The north and east compass arrows indicate the direction of the sky image. Note that the relationship of north and east in the sky (when viewed from below) is reversed with respect to the directional arrows on the map on the ground (when viewed from above). Scale bars are labeled in light years. This is the distance light travels in her one earth year. It takes light two years to travel the same distance as the length of the stick. One light year is equivalent to approximately 5.88 trillion miles or 9.46 trillion kilometers. This image was created by converting invisible near-infrared wavelength light into visible light colors. The color key indicates the NIRCam filter used when collecting light. The color of each filter name is the color of visible light used to represent infrared light passing through that filter. Webb’s NIRCam was built by a team at the University of Arizona and his Lockheed Martin’s Advanced Technology Center.
(Image: NASA, ESA, CSA, STScI)
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Previous observations of jets and outflows have focused primarily on nearby regions and more evolved objects already detectable at Hubble wavelengths.
“Webb’s unparalleled sensitivity allows observations of more distant regions, and its infrared optimization investigates the young stages of dust sampling, which will allow astronomers to explore environments resembling the birthplace of the solar system. It provides an unprecedented view,” the agency said.
What looks like craggy mountains on a moonlit night is actually the edge of the nearby Carina Nebula’s young star forming region NGC 3324. Captured in infrared by the Near Infrared Camera (NIRCam) on NASA’s James Webb Space Telescope, this image reveals a previously invisible region of star birth.
(NASA, ESA, CSA, STScI)
Many of these protostars are destined to become low-mass stars like our Sun.
this star formation periodNASA added, is particularly difficult to capture because it is relatively fleeting.
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Webb’s observations also help astronomers reveal how active star-forming regions are.
By comparing the location of previously known outflows in the region to Hubble data from 16 years ago, scientists were able to track the speed and direction the jet was traveling.
