File:Andromeda's Extended Clusters (13986626315).png
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Once again we are faced with objects which defy categorization. These look something like globular clusters but they're not as compact. They're kind of like dwarf galaxies, but not quite that, either.
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| Description |
English: Once again we are faced with objects which defy categorization. These look something like globular clusters but they're not as compact. They're kind of like dwarf galaxies, but not quite that, either. No one has found any of these extended clusters anywhere in the Milky Way, so it is thought that because only Andromeda has them that they represent clues to the differing histories of Milky Way and Andromeda.
Anyway, if you are feeling inquisitive, all of this information can be found in this paper which goes into plenty of detail about what they are and where they may have come from. Using Stellarium, I made a picture showing where the four clusters are located. I knew they were in the outer halo of Andromeda but EC4 is surprisingly far away to me. These data all came from this proposal: Deep imaging of newly discovered globular clusters in the outer halo of M31 Red: ACS/WFC F814W Green: Pseudo Blue: ACS/WFC F606W North is 65° clockwise for all four clusters. |
| Date | Taken on 23 April 2014, 15:38:10 |
| Source | Andromeda's Extended Clusters |
| Author | geckzilla |
| Flickr sets | all astronomy; Hubble Processing |
| Flickr tags | globularcluster; extendedcluster; hst; stars; m31ec3; m31ec4; m31ec1; m31ec2; hubble; starcluster; galaxy; hla; andromeda |
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This image was originally posted to Flickr by geckzilla at https://flickr.com/photos/54209675@N00/13986626315. It was reviewed on 24 February 2024 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
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