NGC 6810

Galaxy in the constellation of Pavo

NGC 6810
NGC 6810
Observation data (J2000.0 epoch)
Constellation	Pavo
Right ascension	19^h 43^m 34.25^s ^[1]
Declination	−58° 39′ 20.12″ ^[1]
Redshift	0.006775 ^[1]
Heliocentric 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]

References

^ ^a ^b ^c ^d ^e ^f ^g ^h "NASA/IPAC Extragalactic Database". ned.ipac.caltech.edu. Retrieved 28 November 2017.
^ ^a ^b "Revised NGC Data for NGC 6810". spider.seds.org. Retrieved December 9, 2017.
^ "Data for NGC 6810". www.astronomy-mall.com. Retrieved December 9, 2017.
^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ 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. arXiv:astro-ph/0701630. Bibcode:2007MNRAS.376..523S. doi:10.1111/j.1365-2966.2007.11478.x. S2CID 13834527.
^ Forbes, Duncan A.; Norris, R. P. (1998). "Star Formation in Southern Seyfert Galaxies". Monthly Notices of the Royal Astronomical Society. 300 (3): 757. arXiv:astro-ph/9804298. Bibcode:1998MNRAS.300..757F. doi:10.1046/j.1365-8711.1998.01940.x. S2CID 3719096. Retrieved 3 December 2017.
^ ^a ^b ^c "Blowin' in the galactic superwind". www.astronomy.com. Retrieved 3 December 2017.