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The Pandora Cluster has been one of the most interesting images captured since James Webb Space Telescope. Not only the galaxies in the area closest to the Earth (relatively close, actually) but also all those in the background that are far more distant and far older. In recent days, however, new images have also arrived spiral galaxies that the JWST extension has captured over the past few months.
Scientists hope to make the most of the high resolution of the new scientific instrument to detect data and thus try to understand how those areas of the Universe work, from the very structure of galaxies but also the formation of stars and planetary systems. However, these images are particularly suggestive even for people who do not follow the world of astronomy considering their own “artistic value”however based on real data and actually existing structures.
Spiral galaxies and the James Webb Space Telescope
In the latest series of images released, however captured over the past few months, the JWST extension particularly focused on NGC 1365, NGC 1433 (also known as PGC 13586) e NGC 7496. The first is a barred spiral galaxy, the second is a barred spiral galaxy with a double ring structure while the third is a spiral galaxy. Compared to the Pandora Cluster image (about 3.5 billion light-years), these celestial objects are significantly closer to Earth considering that they are respectively 56 million light-years, 46 million light-years and 24 million light-years away . NGC 1365 is located in the constellation Fornax, NGC 1433 it is located in the constellation of the Clock while NGC 7496 it is located in the constellation Crane.
NGC 1365 (click on image to enlarge)
According to reported this set of observations James Webb Space Telescope (these images are only a part) are used to analyze the star formation in relatively close areas of the Universe and how this can influence the very structure of galaxies. Altogether in the panel of celestial objects there are 19 different spiral galaxies with astronomers who in recent months have been able to observe M74 (of which we have written in the past), NGC 7496, IC 5332, NGC 1365 and NGC 1433.
NGC 1433 or PGC 13586 (click on image to enlarge)
Lo was used to collect the data MIRI tool (Mid-Infrared Instrument, medium-infrared) which has made it possible to detect areas where large quantities of dust or gas bubbles are concentrated in the area of the arms of the galaxies. Thanks to infrared, it is possible to overcome the blanket of dust and thus see structures that could have been hidden from other scientific instruments.
NGC 7496 (click on image to enlarge)
With the wavelengths of 7.7 µm and 11.3 µm it is then possible to highlight the presence of polycyclic aromatic hydrocarbons which are essential for the formation of stars and planets. Continuing with the collection of data it will also be possible to understand how these galaxies have evolved (combining data from other studies) and to be able to think about how they will become in billions of years. To understand the size of the visual field of the James Webb Space Telescope just think that those structures are about 48,000 light years wide.
Remember that these images do not appear as if a human were looking at them as they are infrared emissions. For this reason, scientists have reconstructed them from data collected by JWST extension. During the observation the filters F770W, F1000W, F1130 and F2100W were used which correspond to the wavelengths of 7.7 µm, 10 µm, 11.3 µm and 21 µm to which the colors blue, green have been assigned respectively , green and red.
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