File:NGC 5474 (noao-n5474block).tiff
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DescriptionNGC 5474 (noao-n5474block).tiff |
English: NGC 5474 is an asymmetric spiral galaxy and it is being dramatically disturbed by its much larger neighbor M101. With respect to this image, M101 is several fields away towards the upper left direction. At first glance, it might appear that M101 is somehow gravitationally dragging the nucleus right out of NGC 5474. However, astronomers that model these kinds of galactic interactions on a computer find a slightly different story. When using tens (if not hundreds) of thousands of point masses for stars, astronomers found that the asymmetry displayed in NGC 5474 is probably relatively short lived. We just happen to be looking at this galaxy in a state of "sloshed" agitation. As NGC 5474 orbits M101, the amount of asymmetry depends of the relationship between the direction of orbital revolution about M101 and the sense of rotation for NGC 5474ʼs disk. If the revolution is opposite that of disk rotation, as it is in the case of NGC 5474, then the lopsided state can survive for many galactic rotations after an initial (strong) tidal perturbation.Note that the seemingly grainy appearance of this galaxy is due to partially resolving some of the brighter stars in the disk. A healthy sprinkling of pink star forming regions, and blue (young) stellar associations can also be seen along the spiral structure of the galaxy.This image was taken as part of Advanced Observing Program (AOP) program at Kitt Peak Visitor Center during 2014. |
Date | 10 April 2014, 11:42:00 (upload date) |
Source | NGC 5474 |
Author | KPNO/NOIRLab/NSF/AURA/Adam Block |
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This media was created by the National Optical-Infrared Astronomy Research Laboratory (NOIRLab).
Their website states: "Unless specifically noted, the images, videos, and music distributed on the public NOIRLab website, along with the texts of press releases, announcements, images of the week and captions; are licensed under a Creative Commons Attribution 4.0 International License, and may on a non-exclusive basis be reproduced without fee provided the credit is clear and visible." To the uploader: You must provide a link (URL) to the original file and the authorship information if available. | |
This file is licensed under the Creative Commons Attribution 4.0 International license.
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 17:38, 23 October 2023 | 1,945 × 1,287 (3.59 MB) | OptimusPrimeBot (talk | contribs) | #Spacemedia - Upload of https://noirlab.edu/public/media/archives/images/original/noao-n5474block.tif via Commons:Spacemedia |
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Width | 1,945 px |
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Height | 1,287 px |
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Compression scheme | LZW |
Pixel composition | RGB |
Orientation | Normal |
Number of components | 3 |
Number of rows per strip | 44 |
Horizontal resolution | 300 dpi |
Vertical resolution | 300 dpi |
Data arrangement | chunky format |
Software used | Adobe Photoshop 22.4 (Windows) |
File change date and time | 20:15, 30 August 2021 |
Exif version | 2.31 |
Color space | sRGB |
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1,287 pixel
1,945 pixel
3,767,170 byte
545ff4bc85e59cb024712d4a047e4b5eddcacbc8
10 April 2014
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