2024-02-23 12:14:34
This is NGC 2835, a spiral galaxy located approximately 35 million light years away in the constellation Hydra. It was created based on data obtained by the near-infrared camera (NIRCam) and mid-infrared observation instrument (MIRI) of the James Webb Space Telescope (JWST). Because the Webb Space Telescope primarily observes at infrared wavelengths that cannot be seen by the human eye, the colors of published images are colored according to the filters used during acquisition.
[▲ Spiral galaxy “NGC 2835” observed by the James Webb Space Telescope’s near-infrared camera (NIRCam) and mid-infrared observation instrument (MIRI) (Credit: NASA, ESA, CSA, STScI, Janice Lee (STScI), Thomas Williams (Oxford), PHANGS Team)]
According to the Space Telescope Science Institute (STScI), which operates the Webb Space Telescope, NIRCam data (colored in blue and green) shows that infrared radiation emitted by young, hot stars that appear blue in visible light is compared to MIRI data (colored in green and red). (colored) shows infrared rays re-radiated by dust that has absorbed ultraviolet rays and visible rays. The dust spread throughout the galaxy’s disk is intricately distributed like a skeleton supporting spiral arms, and hot stars are densely packed here and there to form star clusters.
Next is NGC 2835, which was observed by the Wide Field Camera 3 (WFC3) of the Hubble Space Telescope (HST). The orientation and size have been adjusted to match the Webb Space Telescope image posted earlier. Comparing the two images, you can see that the bright part of the dust distribution captured by the Webb Space Telescope spreads along the series of dark nebulae seen in the Hubble Space Telescope image.
[▲ Spiral galaxy “NGC 2835” observed by the Hubble Space Telescope’s Wide Field Camera 3 (WFC3) (Credit: NASA, ESA, CSA, STScI, Janice Lee (STScI), Thomas Williams (Oxford), PHANGS Team)]
The observation of NGC 2835 by the Webb Space Telescope was carried out as part of the observation project “PHANGS” (Physics at High Angular resolution in Nearby GalaxieS), which targets galaxies in the nearby universe. This project, which includes the Hubble Space Telescope, Chile’s ALMA radio telescope group, and the European Southern Observatory’s (ESO) Very Large Telescope (VLT) located at the Paranal Observatory in Chile, will High-resolution observations using electromagnetic waves of various wavelengths have been carried out for several years to understand star formation.
The Webb Space Telescope, a new addition to the project, has observed bubble-like and filament-like structures that tell us regarding the cycle of star formation on the smallest scale ever, surprising even researchers who have studied the same galaxy for many years. It means that there is. The image at the beginning is one of 19 nearby galaxies observed by the Webb Space Telescope as part of the PHANGS project, and was released by STScI, the National Aeronautics and Space Administration (NASA), and the European Space Agency (ESA) on January 29, 2024. .
Source
- STScI – Webb and Hubble’s Views of Spiral Galaxy NGC 2835
- STScI – NASA’s Webb Depicts Staggering Structure in 19 Nearby Spiral Galaxies
- NASA – NASA’s Webb Depicts Staggering Structure in 19 Nearby Spiral Galaxies
- ESA – Webb reveals structure in 19 spiral galaxies
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