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NGC 1850 is a double cluster and a super star cluster in the Dorado constellation, located in the northwest part of the bar of the Large Magellanic Cloud, at a distance of 168 kly (51.5 kpc) from the Sun. It was discovered by Scottish astronomer James Dunlop in 1826.
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NGC 545 is a lenticular galaxy located in the constellation Cetus. It is located at a distance of about 250 million light years from Earth, which, given its apparent dimensions, means that NGC 545 is about 180,000 light years across. It was discovered by William Herschel on October 1, 1785. It is a member of the Abell 194 galaxy cluster and is included along with NGC 547 in the Atlas of Peculiar Galaxies.
V723 Monocerotis is a variable star in the constellation Monoceros. It was proposed in 2021 to be a binary system including a lower mass gap black hole candidate nicknamed "The Unicorn". Located 1,500 light years from Earth, it would be the closest black hole to our planet, and among the smallest ever found.
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References
- ↑ Nicholl, M.; Wevers, T.; Oates, S. R.; Alexander, K. D.; Leloudas, G.; Onori, F.; Jerkstrand, A.; Gomez, S.; Campana, S. (2020-09-14). "An outflow powers the optical rise of the nearby, fast-evolving tidal disruption event AT2019qiz". Monthly Notices of the Royal Astronomical Society. 499 (1): 482–504. arXiv: 2006.02454 . Bibcode:2020MNRAS.499..482N. doi: 10.1093/mnras/staa2824 . S2CID 219305100.
- ↑ Starr, Michelle (12 October 2020). "Witness The Very Last Scream of Light From a Star Devoured by a Black Hole". ScienceAlert . Retrieved 2020-10-13.
- ↑ "ESO telescopes record last moments of star devoured by a black hole". ScienceDaily . Retrieved 2020-10-13.
- ↑ "Death by Spaghettification: ESO Telescopes Record Last Moments of Star Devoured by a Black Hole". www.eso.org. European Southern Observatory . Retrieved 2020-10-13.
- ↑ Nicholl, M.; et al. (2020). "An outflow powers the optical rise of the nearby, fast-evolving tidal disruption event AT2019qiz". Monthly Notices of the Royal Astronomical Society. 499: 482–504. arXiv: 2006.02454 . doi: 10.1093/mnras/staa2824 .
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