Astronomy:ESO 0313-192
| ESO 0313-192 | |
|---|---|
.jpg) ESO 0313-192 (left), as taken from Hubble Space Telescope (HST), next to LOY2001 (right) | |
| Observation data (J2000 epoch) | |
| Constellation | Eridanus |
| Right ascension | 03h 15m 51.80s[1] |
| Declination | −19° 06′ 45.0″[1] |
| Redshift | 0.067±0.0002[2] |
| Distance | 1 Bly (225.9 Mpc)[2] |
| Group or cluster | Abell 428[1] |
| Apparent magnitude (V) | 17.48[1] |
| Characteristics | |
| Type | SA(s)ca (spiral radio galaxy)[3] |
| Size | 1.5 million ly (radio lobe(s)) |
| Apparent size (V) | 0.69 x 0.14[1] |
| Notable features | active galactic nuclei |
| Other designations | |
| LEDA 97372,[2] 2MASX J03155208-1906442,[2] NVSS J031552-190638,[2] [LO95] 0313-192[4] | |
ESO 0313-192 (also known as PGC 97372 and LO95 0313-192) is a edge-on spiral galaxy, or a double-lobed radio galaxy around 1 billion light-years away in the constellation Eridanus.[2] Its radio jets were discovered in 2003 by NASA, and its radio lobes are an estimated 1.5 million light years in diameter.[1] It is part of the cluster Abell 428, and it has an active galactic nuclei.[2]
Characteristics
ESO 0313-192 has a spiral shape similar to that of the Milky Way.[5] It has a large central bulge, and arms speckled with brightly glowing gas inhabited by thick lanes of dark dust.[2] Its companion, sitting pretty in the right of the frame, is known rather unpoetically as [LOY2001] J031549.8-190623.[4]
Jets, outbursts of superheated gas moving at close to the speed of light, have long been associated with the cores of giant elliptical galaxies, and galaxies in the process of merging.[1] However, in an unexpected discovery, astronomers found ESO 0313-192 to have intense radio jets spewing out from its central supermassive black hole.[2][4] The galaxy appears to have two more regions that are also strongly emitting in the radio part of the spectrum, making it even rarer still.[1]
The discovery of these giant jets in 2003, not visible in this image,[6] but indicated in this earlier Hubble composite,[7] has been followed by the unearthing of a further three spiral galaxies containing radio-emitting jets in recent years.[2][8] This growing class of unusual spirals continues to raise significant questions about how jets are produced within galaxies, and how they are thrown out into the cosmos.[3][9]
Properties
Nearly all classic double-lobed radio galaxies have either an elliptical galaxy or some kind of galactic merger at their center.[10] However, there is one remarkable exception to this rule.[6] In 2003, astronomers confirmed that ESO 0313-192, flanked by large, bright clouds of radio emissions, is in fact an edge-on spiral galaxy.[3][11]
Twisted Disc
If you look closely enough, ESO 0313-192's dark plane of dust is distinctly twisted.[1] This may be due to a collision or a near pass-by with a smaller galaxy, which may have sparked the galaxy's nucleus to life.[4][12]
Gallery
Radio Map image of Hubble's Advanced Camera for Surveys with a radio map from the Very Large Array
A twisted disc is visible
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External links
- ESO 0313-192 on NASA
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 "A misbehaving spiral" (in en). https://www.spacetelescope.org/images/potw1604a/.
- ↑ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 "PGC 97372 - Galaxy - SKY-MAP". http://www.wikisky.org/starview?object_type=2&object_id=61974.
- ↑ 3.0 3.1 3.2 "Recent Additions | Astropix". https://www.astropix.org/recent?page=135.
- ↑ 4.0 4.1 4.2 4.3 "A Large Double Radio Source from a Spiral Galaxy: 0313-192". https://pages.astronomy.ua.edu/keel/research/rg0313.html.
- ↑ "Stunning Spiral Galaxy: A Remarkable View of LO95 0313-192" (in en). https://www.pinterest.com/pin/stunning-spiral-galaxy-a-remarkable-view-of-lo95-0313192--584834701582364957/.
- ↑ 6.0 6.1 Morganti, R.; Holt, J.; Tadhunter, C.; Almeida, C. Ramos; Dicken, D.; Inskip, K.; Oosterloo, T.; Tzioumis, T. (2011-11-01). "PKS 1814-637: a powerful radio-loud AGN in a disk galaxy" (in en). Astronomy & Astrophysics 535: A97. doi:10.1051/0004-6361/201117686. ISSN 0004-6361. https://www.aanda.org/articles/aa/abs/2011/11/aa17686-11/aa17686-11.html.
- ↑ ""LO95 0313-192" – Science World" (in en). 2016-01-29. https://blogs.voanews.com/science-world/tag/lo95-0313-192/.
- ↑ "The Unruly Galaxy" (in en). https://www.samford.edu/departments/planetarium/blog/The-Unruly-Galaxy.
- ↑ "A misbehaving spiral" (in es). 2016-02-19. https://gaiatitans.wordpress.com/a-misbehaving-spiral/.
- ↑ Limited, Alamy. "0313 192 hi-res stock photography and images" (in en). https://www.alamy.com/stock-photo/0313-192.html.
- ↑ Now, Astronomy. "LO95 0313-192 – Astronomy Now" (in en-US). https://astronomynow.com/tag/lo95-0313-192/.
- ↑ "Geckzilla.com - Art - Double Radio Spiral in Eridanus". https://geckzilla.com/art/v/406.
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