NGC 7606 explained

NGC 7606
Epoch:J2000
Type:SA(s)b [1]
Dist Ly:98.5 ± 18.8 Mly (30.2 ± 5.8 Mpc)
Z:0.007442 ± 0.000017
H Radial V:2231 ± 5 km/s
Appmag V:10.8[2]
Size V:5′.4 × 2′.2
Constellation Name:Aquarius
Names:MCG -02-59-012, PGC 71047

NGC 7606 is a spiral galaxy located in the constellation Aquarius. It is located at a distance of circa 100 million light years from Earth, which, given its apparent dimensions, means that NGC 7606 is about 165,000 light years across. It was discovered by William Herschel on September 28, 1785.[3] The galaxy is included in the Herschel 400 Catalogue. It lies 45 arcminutes northeast from psi2 Aquarii. It can be seen with a 4 inch telescope but its visibility is greatly affected by light pollution.[4]

Characteristics

NGC 7606 is a spiral galaxy seen on inclination. It has a bright nucleus surrounded by a prominent bulge, which is seen elliptical due to the inclination. No bar has been observed. A ring with an apparent diameter of 0.85 arcminutes has been detected at the central part of the galaxy.[5] The galaxy features two main arms, that can be traced for nearly 360°, and several arm fragments.[6] The arms are smooth and rather tight, although not as tightly wound as the ones of NGC 488.[7] Few bright spots have been observed in the arms.[6] The galaxy is found to host a supermassive black hole, whose mass based on bulge velocity dispersion σ is estimated to be 15-22 million .[8] [9] NGC 7606 is an isolated galaxy.[10]

Two supernovae have been observed in NGC 7606, SN 1965M (magnitude 16.0), and SN 1987N (type Ia, magnitude 13.8).[11]

Notes and References

  1. Web site: NASA/IPAC Extragalactic Database . Results for NGC 7606 . 2016-01-18 .
  2. Web site: Revised NGC Data for NGC 7606 . spider.seds.org . 25 November 2018.
  3. Web site: Seligman . Courtney . NGC 7606 (= PGC 71047) . Celestial Atlas . 19 November 2018.
  4. Book: O'Meara. Steve. Steve O'Meara's Herschel 400 observing guide : how to find and explore 400 star clusters, nebulae, and galaxies discovered by William and Caroline Herschel. 2007. Cambridge university press. Cambridge. 978-0521858939. 285.
  5. Comerón . S. . Salo . H. . Laurikainen . E. . Knapen . J. H. . Buta . R. J. . Herrera-Endoqui . M. . Laine . J. . Holwerda . B. W. . Sheth . K. . Regan . M. W. . Hinz . J. L. . Muñoz-Mateos . J. C. . Gil de Paz . A. . Menéndez-Delmestre . K. . Seibert . M. . Mizusawa . T. . Kim . T. . Erroz-Ferrer . S. . Gadotti . D. A. . Athanassoula . E.. Lia Athanassoula . Bosma . A. . Ho . L. C. . ARRAKIS: atlas of resonance rings as known in the S4G . Astronomy & Astrophysics . 19 February 2014 . 562 . A121 . 10.1051/0004-6361/201321633. 1312.0866 . 2014A&A...562A.121C . 119295831 .
  6. Eskridge . Paul B. . Frogel . Jay A. . Pogge . Richard W. . Quillen . Alice C. . Berlind . Andreas A. . Davies . Roger L. . DePoy . D. L. . Gilbert . Karoline M. . Houdashelt . Mark L. . Kuchinski . Leslie E. . Ramirez . Solange V. . Sellgren . K. . Stutz . Amelia . Terndrup . Donald M. . Tiede . Glenn P. . Near‐Infrared and Optical Morphology of Spiral Galaxies . The Astrophysical Journal Supplement Series . November 2002 . 143 . 1 . 73–111 . 10.1086/342340. 2002ApJS..143...73E . astro-ph/0206320 . 15491635 .
  7. Sandage, A., Bedke, J. (1994), The Carnegie Atlas of Galaxies. Volume I, Carnegie Institution of Washington
  8. Ferrarese . Laura . Beyond the Bulge: A Fundamental Relation between Supermassive Black Holes and Dark Matter Halos . The Astrophysical Journal . 10 October 2002 . 578 . 1 . 90–97 . 10.1086/342308. 2002ApJ...578...90F . astro-ph/0203469 . 17064543 .
  9. Berrier . Joel C. . Davis . Benjamin L. . Kennefick . Daniel . Kennefick . Julia D. . Seigar . Marc S. . Barrows . Robert Scott . Hartley . Matthew . Shields . Doug . Bentz . Misty C. . Lacy . Claud H. S. . Further Evidence for a Supermassive Black Hole Mass-Pitch Angle Relation . The Astrophysical Journal . 14 May 2013 . 769 . 2 . 132 . 10.1088/0004-637X/769/2/132. 2013ApJ...769..132B . 1304.4937 . 118572496 .
  10. Makarov. Dmitry. Karachentsev. Igor. Galaxy groups and clouds in the local (z∼ 0.01) Universe. Monthly Notices of the Royal Astronomical Society. 21 April 2011. 412. 4. 2498–2520. 10.1111/j.1365-2966.2010.18071.x. 2011MNRAS.412.2498M. 1011.6277. 119194025. 28 November 2018. 31 January 2016. https://web.archive.org/web/20160131020344/http://www.sao.ru/hq/dim/groups/galaxies.dat. dead.
  11. http://www.cbat.eps.harvard.edu/lists/Supernovae.html List of Supernovae

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