Slug nebula
| Nebula | |
|---|---|
 Image of the Slug nebula. The bright circular blue-white for is the quasar UM 287 while the blue haze is the nebula itself. | |
| Observation data | |
| Distance | z=2.283 |
| Physical characteristics | |
| Radius | 450 kpc pc |
| Notable features | One of the largest and luminous Lyman-alpha nebula |
The Slug nebula is one of the largest and most luminous Lyman-alpha nebula discovered so far extending over 450 kpc. The nebula sits at a distance of z=2.283 surrounds a bright quasar named UM287.[1]
It has a high surface brightness and is filimentary. This high surface brightness implies two things: (1) very large densities of cold and ionized gas, (2) very large colum densities of neutral hydrogen.[2]
References
[edit]- ^ Leibler, Camille N; Cantalupo, Sebastiano; Holden, Bradford P; Madau, Piero (2018-10-21). "The detection of intergalactic H α emission from the Slug Nebula at z ∼ 2.3". Monthly Notices of the Royal Astronomical Society. 480 (2): 2094–2108. arXiv:1807.00054. doi:10.1093/mnras/sty1764. ISSN 0035-8711.
- ^ Cantalupo, Sebastiano; Pezzulli, Gabriele; Lilly, Simon J; Marino, Raffaella Anna; Gallego, Sofia G; Schaye, Joop; Bacon, Roland; Feltre, Anna; Kollatschny, Wolfram; Nanayakkara, Themiya; Richard, Johan; Wendt, Martin; Wisotzki, Lutz; Prochaska, J Xavier (2019-03-11). "The large- and small-scale properties of the intergalactic gas in the Slug Ly α nebula revealed by MUSE He ii emission observations". Monthly Notices of the Royal Astronomical Society. 483 (4): 5188–5204. arXiv:1811.11783. doi:10.1093/mnras/sty3481. ISSN 0035-8711.
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