This is the barred spiral galaxy “NGC 1808” about 40 million light years away in the direction of “Pigeon”. A spiral galaxy is a spiral galaxy that has a bar-like structure at its center. About half of all spiral galaxies, including our own Milky Way galaxy, are thought to have bar-like structures.
【▲ Liquid Range 「NGC 1808 」(Credit: Dark Energy Survey / DOE / FNAL / DECam / CTIO / NOIRLab / NSF / AURA; Image processing: R. Colombari and M. Zamani (NSF NOIRLab)】
According to the National Science Foundation’s (NSF) National Institute for Optical and Infrared Astronomy (NOIRLab), which released the image, the pale blue ring around the bright center of NGC 1808 contains star clusters and supernova remnants I’m here. Active star formation activity occurs in this region, and many blue stars that shine brightly at high temperatures are believed to be born. On the outside, slightly distorted spiral arms (spiral arms) spread out to surround the inner part, giving a soft glow.
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In addition, NGC 1808 is known to have an active galactic nucleus (AGN) that emits strong electromagnetic waves from a narrow region at its center, and NGC 1808 is classified as a Seyfert galaxy (Seyfert type 2), a type of active galaxy. She has been. It is believed that the force behind these active galactic nuclei is a supermassive black hole (supermassive black hole) It is believed that it is observed as an active galactic nucleus by radiating electromagnetic waves of various wavelengths.
According to NOIRLab, NGC 1808’s active galactic nucleus, high star formation activity, and distorted spiral arms may tell the story of its gravitational interaction with another nearby galaxy, NGC 1792. (NGC 1792 is out of the field of view at the bottom right of the image, so it is not visible here).
The first image was created based on observation data (using visible light and infrared filters) of the “Dark Energy Camera (DECam)” observation device installed in the Blanco 4m telescope at the Cerro Toloro Inter-American Observatory in Chile. by NOIRLab on May 17, 2023. The dark energy camera, as its name suggests, is an observation device developed primarily for the study of dark energy. The number of pixels is about 520 megapixels, and the area about 14 full moons (3 square degrees) can be shot at once. Observations were carried out for the original purpose of dark energy research between 2013 and 2019.
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Source
- Image Credit: Dark Energy Survey/DOE/FNAL/DECam/CTIO/NOIRLab/NSF/AURA; Image processing: R. Colombari and M. Zamani (NSF NOIRLab)
- NOIRLab – Many Layers of NGC 1808
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