Astronomy:NGC 6810
| NGC 6810 | |
|---|---|
 NGC 6810 | |
| Observation data (J2000.0 epoch) | |
| Constellation | Pavo |
| Right ascension | 19h 43m 34.25s [1] |
| Declination | −58° 39′ 20.12″ [1] |
| Redshift | 0.006775 [1] |
| Helio radial velocity | 2031 ± 10 km/s [1] |
| Distance | 87 Mly[1] |
| Apparent magnitude (V) | 11.60 [2] |
| Apparent magnitude (B) | 12.40 [2] |
| Characteristics | |
| Type | SA(s)ab:sp [1] |
| Apparent size (V) | 3.2 x 0.9 [1] |
| Other designations | |
| PGC 63571, ESO 142-35 | |
NGC 6810 is a spiral galaxy approximately 87 million light-years away from Earth in the constellation of Pavo.[1]
Observational history
NGC 6810 was discovered by John Herschel on July 10, 1834.[3] It was later added to the New General Catalogue by John Louis Emil Dreyer.
Misclassification of NGC 6810
This galaxy used to be classified as a Seyfert 2 galaxy, but that is probably incorrect.[4] Recent X-ray observations provide no evidence of any active galactic nucleus (AGN) activity,[4] and high resolution optical spectra do not confirm the status of NGC 6810 as a Seyfert galaxy, thus it appears to have been misclassified.[4][5]
Features
NGC 6810 is an early-type spiral of roughly equivalent mass to the Milky Way.[4] X-ray, optical, IR and radio properties of NGC 6810 are all consistent with a starburst galaxy.[4]
Galactic-scale superwind
Observation of NGC 6810 with XMM-Newton reveals the presence of extended soft X-ray emission within the optical disc of the galaxy (which is closely associated with star-forming regions) and also beyond the optical disc.[4] This, along with Hα filamentation and peculiar minor axis ionized gas kinematics, strongly suggest that NGC 6810 is host to a galactic-scale superwind[4] which is streaming from the starburst region.[6]
The actively star-forming regions and the base radius of the outflow are unusually spread out, and extend out to a radius of ~6.5 kpc from the nucleus. Most superwinds in other galaxies appear to arise in ≲ 1 kpc-scale nuclear starburst regions.[4] That makes NGC 6810 one of the few ‘disc-wide’ superwinds currently known,[4] because NGC 6810's superwind base extends across nearly 70 percent of the entire galaxy's diameter.[6] Only three other starburst galaxies are known to have broad superwind sources.[6]
See also
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 "NASA/IPAC Extragalactic Database". http://ned.ipac.caltech.edu/cgi-bin/objsearch?objname=NGC+6810.
- ↑ 2.0 2.1 "Revised NGC Data for NGC 6810". http://spider.seds.org/ngc/revngcic.cgi?NGC6810.
- ↑ "Data for NGC 6810". http://www.astronomy-mall.com/Adventures.In.Deep.Space/NGC%206000%20-%206999%20(11-30-17).htm.
- ↑ 4.0 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 Strickland, David K. (2007). "A new superwind galaxy: XMM–Newton observations of NGC 6810". Monthly Notices of the Royal Astronomical Society 376 (2): 523–533. doi:10.1111/j.1365-2966.2007.11478.x. Bibcode: 2007MNRAS.376..523S.
- ↑ Forbes, Duncan A.; Norris, R. P. (1998). "Star Formation in Southern Seyfert Galaxies". Monthly Notices of the Royal Astronomical Society 300 (3): 757. doi:10.1046/j.1365-8711.1998.01940.x. Bibcode: 1998MNRAS.300..757F. https://archive.org/stream/arxiv-astro-ph9804298/astro-ph9804298_djvu.txt. Retrieved 3 December 2017.
- ↑ 6.0 6.1 6.2 "Blowin' in the galactic superwind". http://astronomy.com/news/2007/01/blowin-in-the-galactic-superwind.
External links
- NGC 6810 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
- SEDS
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