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सारांश
वर्णनNGC 3923 Elliptical Shell Galaxy.jpg
English: The glowing object in this image is an elliptical galaxy called NGC 3923. It is located over 90 million light-years away in the constellation of Hydra. NGC 3923 is an example of a shell galaxy where the stars in its halo are arranged in layers.
NGC 3923 has over twenty shells, with only a few of the outer ones visible in this image and its shells are much more subtle than those of other shell galaxies. The shells of this galaxy are also interestingly symmetrical, while other shell galaxies are more skewed.
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NGC 3923 Elliptical Shell Galaxy (Hubble Space Telescope)
{{subst:Upload marker added by en.wp UW}} {{Information |Description = {{en|The glowing object in this image is an elliptical galaxy called NGC 3923. It is located over 90 million light-years away in the constellation of Hydra. NGC 3923 is an example o...
या संचिकेत जास्तीची माहिती आहे. बहुधा ही संचिका बनवताना वापरलेल्या कॅमेरा किंवा स्कॅनर कडून ही माहिती जमा झाली आहे. जर या संचिकेत निर्मितीपश्चात बदल करण्यात आले असतील, तर कदाचित काही माहिती नवीन संचिकेशी पूर्णपणे जुळणार नाही.
वापरलेली संगणन आज्ञावली
Adobe Photoshop CC 2014 (Windows)
मुळ दस्तएवजाचा यूनिक आयडी (Unique ID)
xmp.did:3df8616e-9626-3f4a-9284-6eeb29f6cd15
जमा/पुरवठादार
ESA/Hubble & NASA Acknowledgement: Judy Schmidt
स्रोत
ESA/Hubble
लघुशीर्षक
Galactic onion
चित्र शीर्षक
The glowing object in this image is an elliptical galaxy called NGC 3923. It is located over 90 million light-years away in the constellation of Hydra. NGC 3923 is an example of a shell galaxy where the stars in its halo are arranged in layers. Finding concentric shells of stars enclosing a galaxy is quite common and is observed in many elliptical galaxies. In fact, every tenth elliptical galaxy exhibits this onion-like structure, which has never been observed in spiral galaxies. The shell-like structures are thought to develop as a consequence of galactic cannibalism, when a larger galaxy ingests a smaller companion. As the two centres approach, they initially oscillate about a common centre, and this oscillation ripples outwards forming the shells of stars just as ripples on a pond spread when the surface is disturbed. NGC 3923 has over twenty shells, with only a few of the outer ones visible in this image and its shells are much more subtle than those of other shell galaxies. The shells of this galaxy are also interestingly symmetrical, while other shell galaxies are more skewed. A version of this image was entered into the Hubble’s Hidden Treasures image processing competition by contestant Judy Schmidt.