File:A dishevelled irregular galaxy (potw2324a).jpg
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[edit]DescriptionA dishevelled irregular galaxy (potw2324a).jpg |
English: The galaxy NGC 7292 billows across this image from the NASA/ESA Hubble Space Telescope, accompanied by a handful of bright stars and the indistinct smudges of extremely distant galaxies in the background. It lies around 44 million light-years from Earth in the constellation Pegasus.This slightly dishevelled galaxy is irregular, meaning that it lacks the distinct spiral arms of galaxies like the Whirlpool Galaxy or the smooth elliptical shape of galaxies like Messier 59. Unusually, its core is stretched out into a distinct bar, a feature seen in many spiral galaxies. Alongside its hazy shape, NGC 7292 is remarkably faint. As a result, astronomers classify NGC 7292 as a low surface brightness galaxy, barely distinguishable against the backdrop of the night sky. Such galaxies are typically dominated by gas and dark matter rather than stars.Astronomers directed Hubble to inspect NGC 7292 during an observational campaign studying the aftermath of Type II supernovae. These colossal explosions happen when a massive star collapses and then violently rebounds in a catastrophic explosion that tears the star apart. Astronomers hope to learn more about the diversity of Type II supernovae they have observed by scrutinising the aftermath and remaining nearby stars of a large sample of historical Type II supernovae.NGC 7292’s supernova was observed in 1964 and accordingly given the identifier SN 1964H. Studying the stellar neighbourhood of SN 1964H helps astronomers estimate the initial mass of the star that went supernova, and could uncover surviving stellar companions that once shared a system with the star that would become SN 1964H.[Image Description: A galaxy fills up most of the frame from the right. It is fuzzy and diffuse, but made up of numerous tiny stars. In the core, the stars merge into a glowing bar shape. The gas and stars in the galaxy vary between warm and cool colours. They are spread over a large area, the colours mixing like clouds. The glow of the galaxy fades into a black background, with a few stars and small, distant galaxies.] |
Date | 12 June 2023 (upload date) |
Source | A dishevelled irregular galaxy |
Author | ESA/Hubble & NASA, C. Kilpatrick |
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current | 10:45, 12 June 2023 | 2,967 × 2,594 (3.25 MB) | OptimusPrimeBot (talk | contribs) | #Spacemedia - Upload of https://cdn.spacetelescope.org/archives/images/large/potw2324a.jpg via Commons:Spacemedia |
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Source | ESA/Hubble |
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Credit/Provider | ESA/Hubble & NASA, C. Kilpatrick |
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Date and time of data generation | 06:00, 12 June 2023 |
Software used | Adobe Photoshop 24.4 (Windows) |
File change date and time | 18:55, 8 June 2023 |
Date and time of digitizing | 10:59, 22 March 2023 |
Date metadata was last modified | 20:55, 8 June 2023 |
Unique ID of original document | xmp.did:ffc3b10e-f833-6842-8da4-ff1f03520b10 |
Keywords | NGC 7292 |
Contact information |
ESA Office, Space Telescope Science Institute, 3700 San Martin Dr Baltimore, MD, 21218 United States |
IIM version | 4 |