Draft:VIK J2348-3054
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| VIK J2348-3054 | |
|---|---|
| Observation data (Epoch ) | |
| Right ascension | 23h 48m 33.34s |
| Declination | −30° 54′ 10.0″ |
| Redshift | 6.9018 |
| Type | Luminous Quasar |
| Notable features | Suppresses star formation in galaxies within 5 mpc |
| See also: Quasar, List of quasars | |
VIK J2348-3054 is a high-redshift luminous quasar in the Epoch of Reionization located at a redshift distance of z=6.9018. Despite it being located in a region where there should be an overdensity of Lyman-Alpha emitter (LAEs) galaxies for several mpc, there is a lack of LAEs for at least 5.15 mpc. This means that VIK J2348-3054 is most likely suppressing star formation in the galaxies in its immediate vicinity.[1] This lack of LAE galaxies is unusual for luminous quasars like VIK J2348-3054 because high-red shift quasars are usually found in dense regions of space.[2]
The quasar suppresses star formation in those surrounding galaxies by illuminating and heating up the gas in those galaxies. In order for stars to from, they need cold gas clouds to collapse under gravity.[3]
References
[edit]- ^ Lambert, Trystan S.; Assef, R. J.; Mazzucchelli, C.; Bañados, E.; Aravena, M.; Barrientos, F.; González-López, J.; Hu, W.; Infante, L.; Malhotra, S.; Moya-Sierralta, C.; Rhoads, J.; Valdes, F.; Wang, J.; Wold, I. G. B. (2024-09-01). "A lack of Lyman α emitters within 5 Mpc of a luminous quasar in an overdensity at z = 6.9: Potential evidence of negative quasar feedback at protocluster scales". Astronomy & Astrophysics. 689: A331. Bibcode:2024A&A...689A.331L. doi:10.1051/0004-6361/202449566. ISSN 0004-6361.
- ^ Lambert, Trystan S.; Assef, R. J.; Mazzucchelli, C.; Bañados, E.; Aravena, M.; Barrientos, F.; González-López, J.; Hu, W.; Infante, L. (2024-07-12), "A lack of Lyman α emitters within 5 MPC of a luminous quasar in an overdensity at z = 6.9: Potential evidence of negative quasar feedback at protocluster scales", Astronomy & Astrophysics, 689: A331, arXiv:2402.06870, Bibcode:2024A&A...689A.331L, doi:10.1051/0004-6361/202449566, retrieved 2025-04-09
- ^ CATA, Comunicaciones (2024-09-23). "DEcam confirms that the environment of quasars in the early Universe is indeed crowded". CATA. Retrieved 2025-04-09.