List of largest nebulae
Below is a list of the largest nebulae so far discovered, ordered by size.
List
Nebula | Size (ly/pc) | Type | Notes |
---|---|---|---|
NGC 604 | 1,520 ly (470 pc)[1] | H II region | Located in the Triangulum Galaxy |
Gum Nebula | 1,100 ly (340 pc) | Emission Nebula | |
N44 | 1,000 ly (310 pc)[2] | Emission Nebula | |
Sharpless 310 | 681 ly (209 pc)[3] | H II region | Nebula surrounding VY Canis Majoris, which is one of largest known stars. |
Tarantula Nebula | 600 ly (180 pc)[4] | H II region | Most active starburst region in the Local Group |
N119 | 430 ly × 570 ly (130 pc × 170 pc) | H II region | Peculiar S-shape |
Carina Nebula | 460 ly (140 pc)[5] | H II region | Nearest giant H II region to Earth |
RCW 49 | 350 ly (110 pc) | H II region | |
N70 | 300 ly (92 pc) | H II region | The N 70 Nebula, in the Large Magellanic Cloud has a shell structure and is really a bubble in space. It is a "Super Bubble". |
Barnard's Loop | 100 or 300 ly (31 or 92 pc) | H II region | |
Eagle Nebula | 110 ly × 140 ly (34 pc × 43 pc) | H II region | |
Rosette Nebula | 130 ly (40 pc) | H II region | |
Lagoon Nebula | 40 ly × 110 ly (12 pc × 34 pc) | H II region | |
Veil Nebula | 100 ly (31 pc) | Supernova remnant |
List of largest lyman-alpha blobs
Lyman-alpha blobs | Size (ly/pc) | Type | Notes |
---|---|---|---|
LAB Giant Concentration (coinciding with EQ J221734.0+001701) |
200,000,000 ly (61,000,000 pc)[6] | complex of LαBs | Also on record as one of the largest structures in the universe. |
Lyman-alpha blob 1 | 300,000 ly (92,000 pc)[7] | LαB | Largest blob in the LAB Giant Concentration |
Himiko Gas Cloud | 55,000 ly (17,000 pc)[8] | intergalactic cloud (possible LαB) |
One of the most massive lyman-alpha blobs known |
List of largest High-velocity clouds
High-velocity clouds | Size (ly/pc) | Type | Notes |
---|---|---|---|
NGC 262 Halo Cloud | 1,300,000 ly (400,000 pc) | H I region | Spiral nebula surrounding NGC 262, which is one of the largest known galaxies. |
Leo Ring | 650,000 ly (200,000 pc)[9] | HVC | |
Magellanic Stream | 600,000 ly (180,000 pc) | complex of HVCs | Connects the Large and Small Magellanic clouds; extends across 180° of the sky. |
HVC 127-41-330 | 20,000 ly (6,100 pc)[10] | HVC | |
Smith's Cloud | 3,300 ly × 9,800 ly (1,000 pc × 3,000 pc)[11] | HVC | Extends about 20° of the sky |
See also
References
- ↑ distance × sin( diameter_angle / 2 ) = 760 ly. radius
- ↑ "Roses in the Southern Sky". ESO. 3 November 2003. Retrieved 7 May 2012.
- ↑ Sharpless, Stewart (1959). "A Catalogue of H II Regions". The Astrophysical Journal Supplement Series. 4: 257. Bibcode:1959ApJS....4..257S. doi:10.1086/190049.
- ↑ Lebouteiller, V.; Bernard-Salas, J.; Brandl, B.; Whelan, D. G.; et al. (June 2008). "Chemical Composition and Mixing in Giant H II Regions: NGC 3603, 30 Doradus, and N66". The Astrophysical Journal. 680 (1): 398–419. arXiv:0710.4549. Bibcode:2008ApJ...680..398L. doi:10.1086/587503.
- ↑ "NGC 3372 - The Eta Carinae Nebula". Atlas of the Universe. Retrieved 2013-10-01.
- ↑ Ravilious, Kate. "Giant "Blob" is Largest Thing in Universe". National Geographic News. Retrieved June 23, 2011.
- ↑ "Giant Space Blob Glows from Within". ESO Press Release. 17 August 2011. Retrieved 18 August 2011.
- ↑ Hsu, Jeremy (2009-04-22). "Giant Mystery Blob Discovered Near Dawn of Time". SPACE.com. Retrieved 2009-04-24.
- ↑ Léo Michel-Dansa; Pierre-Alain Duc (2010). "The mysterious Leo giant gas ring explained by a billion year old collision between two galaxies". Canada France Hawaii Telescope.
- ↑ Josh Simon (2005). "Dark Matter in Dwarf Galaxies: Observational Tests of the Cold Dark Matter Paradigm on Small Scales" (PDF). Archived from the original (PDF) on September 13, 2006.
- ↑ Lockman, Felix J.; Benjamin, Robert A.; Heroux, A. J.; Langston, Glen I. (May 2008). "The Smith Cloud: A High-Velocity Cloud Colliding with the Milky Way" (PDF). The Astrophysical Journal. 679 (1): L21. arXiv:0804.4155. Bibcode:2008ApJ...679L..21L. doi:10.1086/588838. Retrieved April 3, 2012.
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