NGC 6810

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NGC 6810
NGC 6810 hst 06359 606.png
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]

Contents

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

Related Research Articles

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NGC 3227 Intermediate spiral galaxy in the constellation Leo

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NGC 520 Pair of colliding galaxies in the constellation Pisces

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NGC 4536 Intermediate spiral galaxy in the constellation Virgo

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NGC 4666 Spiral galaxy in the constellation Virgo

NGC 4666 is a spiral galaxy in the equatorial constellation of Virgo, located at a distance of approximately 55 megalight-years from the Milky Way. It was discovered by the German-born astronomer William Herschel on February 22, 1784. John L. E. Dreyer described it as "bright, very large, much extended 45°±, pretty suddenly brighter middle". It is a member of an interacting system with NGC 4668 and a dwarf galaxy, and belongs to a small group that also includes NGC 4632.

NGC 7552 Barred spiral galaxy in the constellation Grus

NGC 7552 is a barred spiral galaxy in the constellation Grus. It is at a distance of circa 60 million light years from Earth, which, given its apparent dimensions, means that NGC 7552 is about 75,000 light years across. It forms with three other spiral galaxies the Grus Quartet.

NGC 5643 Intermediate spiral galaxy in the constellation Lupus

NGC 5643 is an intermediate spiral galaxy in constellation Lupus. It is located at a distance of circa 60 million light years from Earth, which, given its apparent dimensions, means that NGC 5643 is about 100,000 light years across. NGC 5643 has an active galactic nucleus and is a type II Seyfert galaxy.

NGC 2782 Peculiar spiral galaxy in the constellation Lynx

NGC 2782 is a peculiar spiral galaxy that formed after a galaxy merger in the constellation Lynx. The galaxy lies 75 million light years away from Earth, which means, given its apparent dimensions, that NGC 2782 is approximately 100,000 light years across. NGC 2782 has an active galactic nucleus and it is a starburst and a type 1 Seyfert galaxy. NGC 2782 is mentioned in the Atlas of Peculiar Galaxies in the category galaxies with adjacent loops.

NGC 3147 Spiral galaxy in the constellation Draco

NGC 3147 is a spiral galaxy located in the constellation Draco. It is located at a distance of circa 130 million light years from Earth, which, given its apparent dimensions, means that NGC 3147 is about 140,000 light years across. It was discovered by William Herschel on April 3, 1785. It is a Type II Seyfert galaxy.

NGC 3367 Barred spiral galaxy in the constellation Leo

NGC 3367 is a barred spiral galaxy located in the constellation Leo. It is located at a distance of circa 120 million light years from Earth, which, given its apparent dimensions, means that NGC 3367 is about 85,000 light years across. It was discovered by William Herschel on March 19, 1784.

NGC 7213 Lenticular galaxy in the constellation Grus

NGC 7213 is a lenticular galaxy located in the constellation Grus. It is located at a distance of circa 70 million light years from Earth, which, given its apparent dimensions, means that NGC 7213 is about 75,000 light years across. It was discovered by John Herschel on September 30, 1834. It is an active galaxy with characteristics between a type I Seyfert galaxy and LINER.

NGC 7130 Spiral galaxy in the constellation Piscis Austrinus

NGC 7130 is a spiral galaxy located in the constellation Piscis Austrinus. It is located at a distance of circa 220 million light years from Earth, which, given its apparent dimensions, means that NGC 7130 is about 100,000 light years across. It was discovered by John Herschel on September 25, 1834, and discovered independently by Lewis Swift on September 17, 1897. The location of the galaxy given in the New General Catalogue was off by 30 arcminutes in declination from the location of the galaxy.

NGC 1386 Spiral galaxy in the constellation Eridanus

NGC 1386 is a spiral galaxy located in the constellation Eridanus. It is located at a distance of circa 53 million light years from Earth, which, given its apparent dimensions, means that NGC 1386 is about 50,000 light years across. It is a Seyfert galaxy, the only one in Fornax Cluster.

NGC 4278 Elliptical galaxy in the constellation Coma Berenices

NGC 4278 is an elliptical galaxy located in the constellation Coma Berenices. It is located at a distance of circa 55 million light years from Earth, which, given its apparent dimensions, means that NGC 4278 is about 65,000 light years across. It was discovered by William Herschel on March 13, 1785. NGC 4278 is part of the Herschel 400 Catalogue and can be found about one and 3/4 of a degree northwest of Gamma Comae Berenices even with a small telescope.

NGC 2273 Barred spiral galaxy in the constellation Lynx

NGC 2273 is a barred spiral galaxy located in the constellation Lynx. It is located at a distance of circa 95 million light years from Earth, which, given its apparent dimensions, means that NGC 2273 is about 100,000 light years across. It was discovered by Nils Dunér on September 15, 1867.

NGC 2974 Lenticular galaxy in the constellation Sextans

NGC 2974 is a lenticular galaxy located in the constellation Sextans. It is located at a distance of circa 90 million light years from Earth, which, given its apparent dimensions, means that NGC 2974 is about 90,000 light years across. It was discovered by William Herschel on January 6, 1785. NGC 2974 is located in the sky about 2 and a half degrees south-south east of Iota Hydrae and more than 6 degrees northeast of Alphard. A 10th magnitude star lies next to the galaxy, thus making it a challenging object at low magnifications. NGC 2974 is part of the Herschel 400 Catalogue.

NGC 931 Spiral galaxy in the constellation Triangulum

NGC 931 is a spiral galaxy located in the constellation Triangulum. It is located at a distance of circa 200 million light years from Earth, which, given its apparent dimensions, means that NGC 931 is about 200,000 light years across. It was discovered by Heinrich d'Arrest on September 26, 1865. It is classified as a Seyfert galaxy.

NGC 1142 Interacting spiral galaxy in the constellation Cetus

NGC 1142 is a distorted spiral galaxy in the constellation of Cetus. It is located about 370 million light years away from Earth, which means, given its apparent dimensions, that NGC 1142 is approximately 170,000 light years across. It is a type 2 Seyfert galaxy. It interacts with the elliptical galaxy NGC 1141.

NGC 7679 Lenticular galaxy with a peculiar morphology in the constellation Pisces

NGC 7679 is a lenticular galaxy with a peculiar morphology in the constellation Pisces. It is located at a distance of circa 200 million light years from Earth, which, given its apparent dimensions, means that NGC 7679 is about 60,000 light years across. It was discovered by Heinrich d'Arrest on September 23, 1864. The total infrared luminosity is 1011.05 L☉, and thus it is categorised as a luminous infrared galaxy. NGC 7679 is both a starburst galaxy and a Seyfert galaxy.

References

  1. 1 2 3 4 5 6 7 8 "NASA/IPAC Extragalactic Database". ned.ipac.caltech.edu. Retrieved 28 November 2017.
  2. 1 2 "Revised NGC Data for NGC 6810". spider.seds.org. Retrieved December 9, 2017.
  3. ↑ "Data for NGC 6810". www.astronomy-mall.com. Retrieved December 9, 2017.
  4. 1 2 3 4 5 6 7 8 9 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.
  5. ↑ 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.
  6. 1 2 3 "Blowin' in the galactic superwind". www.astronomy.com. Retrieved 3 December 2017.
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