File:Scrutinising a star-studded cluster (potw2320a).jpg
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editDescriptionScrutinising a star-studded cluster (potw2320a).jpg |
English: The densely packed globular cluster NGC 6325 glistens in this image from the NASA/ESA Hubble Space Telescope. This concentrated group of stars lies around 26 000 light years from Earth in the constellation Ophiuchus.Globular clusters like NGC 6325 are tightly bound collections of stars with anywhere from tens of thousands to millions of members. They can be found in all types of galaxies, and act as natural laboratories for astronomers studying star formation. This is because the constituent stars of globular clusters tend to form at roughly the same time and with similar initial composition, meaning that astronomers can use them to fine-tune their theories of how stars evolve. Astronomers inspected this particular cluster not to understand star formation, but to search for a hidden monster. Though it might look peaceful, astronomers suspect this cluster could contain an intermediate-mass black hole that is subtly affecting the motion of surrounding stars. Previous research found that the distribution of stars in some highly concentrated globular clusters — those with stars packed relatively tightly together — was slightly different from what astronomers expected.This discrepancy suggested that at least some of these densely packed globular clusters — including perhaps NGC 6325 — could have a black hole lurking at the centre. To explore this hypothesis further, astronomers turned to Hubble’s Wide Field Camera 3 to observe a larger sample of densely populated globular clusters, which included this star-studded image of NGC 6325. Additional data from Hubble’s Advanced Camera for Surveys were also incorporated into this image.[Image Description: A dense cluster of bright stars. The core of the cluster is to the left and has a distinct group of blue stars. Surrounding the core are a multitude of stars in warmer colours. These stars are very numerous near the core and become more and more sparse, and more small and distant, out to the sides of the image. A few larger stars also stand in the foreground near the edges of the image.] |
Date | 15 May 2023 (upload date) |
Source | Scrutinising a star-studded cluster |
Author | ESA/Hubble & NASA, E. Noyola, R. Cohen |
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Source | ESA/Hubble |
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Credit/Provider | ESA/Hubble & NASA, E. Noyola, R. Cohen |
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Date and time of data generation | 06:00, 15 May 2023 |
Software used | Adobe Photoshop 24.3 (Windows) |
File change date and time | 04:55, 10 May 2023 |
Date and time of digitizing | 10:42, 21 March 2023 |
Date metadata was last modified | 06:55, 10 May 2023 |
Unique ID of original document | xmp.did:6af886e8-b3a1-0045-aaca-5f0c6ad08a34 |
Keywords | NGC 6325 |
Contact information |
ESA Office, Space Telescope Science Institute, 3700 San Martin Dr Baltimore, MD, 21218 United States |
IIM version | 4 |