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NGC 4473

January 06, 2023

NGC 4473 is an elliptical galaxy[2] located about 50 million light-years away[3] in the constellation of Coma Berenices.[4] It was discovered by astronomer William Herschel on April 8, 1784.[5] NGC 4473 has an inclination of about 71°.[6] NGC 4473 is a member of a chain of galaxies called Markarian's Chain which is part of the larger Virgo Cluster of galaxies.[7][8]

NGC 4473
SDSS image of the elliptical galaxy NGC 4473.
Observation data (J2000 epoch)
ConstellationComa Berenices
Right ascension12h 29m 48.9s[1]
Declination13° 25′ 46″[1]
Redshift0.007485[1]
Helio radial velocity2244 km/s[1]
Distance52.74 Mly
Group or clusterVirgo Cluster
Apparent magnitude (V)11.16[1]
Characteristics
TypeE5[1]
Size~ 68.5 kly (estimated); 21 kpc[1]
Apparent size (V)4.5' × 2.5'[1]
Other designations
CGCG 70-125, MCG 2-32-93, PGC 41228, UGC 7631, VCC 1231[1]

Globular clusters

NGC 4473 has an estimated population of 376 ± 97 globular clusters.[9] The clusters may have formed from the result of multiple minor mergers that helped form the outer regions of the galaxy.[3]

Counter–rotating features

NGC 4473 has two counter-rotating stellar discs embedded in the inner regions of the galaxy. They may have formed from the accretion of gas from outside the galaxy, or by the mergers of gas-rich galaxies.[3]

Supermassive black hole

Using the HST and spectroscopic data from the ground to measure the motions of stars in the center of the galaxy, Douglas Richstone and colleagues at the University of Michigan have concluded that NGC 4473 has a supermassive black hole[10] with an estimated mass of roughly 100 million solar masses (1×108 M☉).[11][12] Its diameter is estimated to be around 4.459 astronomical units (415 million mi).[13]

See also

Gallery

References

  1. ^ a b c d e f g h i "NASA/IPAC Extragalactic Database". Results for NGC 4473. Retrieved 2017-08-01.
  2. ^ "Your NED Search Results". ned.ipac.caltech.edu. Retrieved 2017-08-01.
  3. ^ a b c Alabi, Adebusola B.; Foster, Caroline; Forbes, Duncan A.; Romanowsky, Aaron J.; Pastorello, Nicola; Brodie, Jean P.; Spitler, Lee R.; Strader, Jay; Usher, Christopher (25 June 2015). "The SLUGGS Survey: Globular cluster kinematics in a "double sigma" galaxy - NGC 4473". Monthly Notices of the Royal Astronomical Society. 452 (2): 2208–2219. arXiv:1506.07882. Bibcode:2015MNRAS.452.2208A. doi:10.1093/mnras/stv1426. S2CID 62794454.
  4. ^ Rojas, Sebastián García. "Galaxy NGC 4473 - Galaxy in Coma Berenices Constellation · Deep Sky Objects Browser". DSO Browser. Retrieved 2017-08-01.
  5. ^ "New General Catalog Objects: NGC 4450 - 4499". cseligman.com. Retrieved 2017-08-01.
  6. ^ Schulze, Andreas; Gebhardt, Karl (1 March 2011). "Effect of a Dark Matter Halo on the Determination of Black Hole Masses". The Astrophysical Journal. 729:21 (1): 21. arXiv:1011.5077. Bibcode:2011ApJ...729...21S. doi:10.1088/0004-637X/729/1/21. S2CID 118421255.
  7. ^ "Exploring the Coma-Virgo Cloud" (PDF). GEMINI. 2:12: 1–9. April 1978.
  8. ^ French, Sue (2004). "Deep-Sky Wonders: Markarian's Chain". Sky & Telescope. 107 (5): 88–91.
  9. ^ Rhode, Katherine L. (2012). "Exploring the Correlations between Globular Cluster Populations and Supermassive Black Holes in Giant Galaxies". The Astronomical Journal. 144 (5): 154. arXiv:1210.4570. Bibcode:2012AJ....144..154R. doi:10.1088/0004-6256/144/5/154. hdl:2022/19083. ISSN 1538-3881. S2CID 118565802.
  10. ^ O'Meara, Stephen James (2011-06-30). Deep-Sky Companions: The Secret Deep. Cambridge University Press. ISBN 978-1-139-50007-4.
  11. ^ "List of black hole candidates". www.johnstonsarchive.net. Retrieved 2017-09-17.
  12. ^ "NGC 4473 Fact Sheet - StarDate's Black Hole Encyclopedia". blackholes.stardate.org. Retrieved 2017-08-02.
  13. ^ "Wolfram|Alpha: Computational Knowledge Engine". www.wolframalpha.com. Retrieved 2017-10-28.

External links

 
Wikimedia Commons has media related to NGC 4473.
  • NGC 4473 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images

January 06, 2023
4473, elliptical, galaxy, located, about, million, light, years, away, constellation, coma, berenices, discovered, astronomer, william, herschel, april, 1784, inclination, about, member, chain, galaxies, called, markarian, chain, which, part, larger, virgo, cl. NGC 4473 is an elliptical galaxy 2 located about 50 million light years away 3 in the constellation of Coma Berenices 4 It was discovered by astronomer William Herschel on April 8 1784 5 NGC 4473 has an inclination of about 71 6 NGC 4473 is a member of a chain of galaxies called Markarian s Chain which is part of the larger Virgo Cluster of galaxies 7 8 NGC 4473SDSS image of the elliptical galaxy NGC 4473 Observation data J2000 epoch ConstellationComa BerenicesRight ascension12h 29m 48 9s 1 Declination13 25 46 1 Redshift0 007485 1 Helio radial velocity2244 km s 1 Distance52 74 MlyGroup or clusterVirgo ClusterApparent magnitude V 11 16 1 CharacteristicsTypeE5 1 Size 68 5 kly estimated 21 kpc 1 Apparent size V 4 5 2 5 1 Other designationsCGCG 70 125 MCG 2 32 93 PGC 41228 UGC 7631 VCC 1231 1 Contents 1 Globular clusters 2 Counter rotating features 3 Supermassive black hole 4 See also 5 Gallery 6 References 7 External linksGlobular clusters EditNGC 4473 has an estimated population of 376 97 globular clusters 9 The clusters may have formed from the result of multiple minor mergers that helped form the outer regions of the galaxy 3 Counter rotating features EditNGC 4473 has two counter rotating stellar discs embedded in the inner regions of the galaxy They may have formed from the accretion of gas from outside the galaxy or by the mergers of gas rich galaxies 3 Supermassive black hole EditUsing the HST and spectroscopic data from the ground to measure the motions of stars in the center of the galaxy Douglas Richstone and colleagues at the University of Michigan have concluded that NGC 4473 has a supermassive black hole 10 with an estimated mass of roughly 100 million solar masses 1 108 M 11 12 Its diameter is estimated to be around 4 459 astronomical units 415 million mi 13 See also EditList of NGC objects 4001 5000 Messier 87 M86 NGC 4550 Lenticular galaxy in the Virgo Cluster experiencing counter rotationGallery Edit NGC 4473 SDSS NGC 4473 in Virgo Cluster HST image of NGC 4473References Edit a b c d e f g h i NASA IPAC Extragalactic Database Results for NGC 4473 Retrieved 2017 08 01 Your NED Search Results ned ipac caltech edu Retrieved 2017 08 01 a b c Alabi Adebusola B Foster Caroline Forbes Duncan A Romanowsky Aaron J Pastorello Nicola Brodie Jean P Spitler Lee R Strader Jay Usher Christopher 25 June 2015 The SLUGGS Survey Globular cluster kinematics in a double sigma galaxy NGC 4473 Monthly Notices of the Royal Astronomical Society 452 2 2208 2219 arXiv 1506 07882 Bibcode 2015MNRAS 452 2208A doi 10 1093 mnras stv1426 S2CID 62794454 Rojas Sebastian Garcia Galaxy NGC 4473 Galaxy in Coma Berenices Constellation Deep Sky Objects Browser DSO Browser Retrieved 2017 08 01 New General Catalog Objects NGC 4450 4499 cseligman com Retrieved 2017 08 01 Schulze Andreas Gebhardt Karl 1 March 2011 Effect of a Dark Matter Halo on the Determination of Black Hole Masses The Astrophysical Journal 729 21 1 21 arXiv 1011 5077 Bibcode 2011ApJ 729 21S doi 10 1088 0004 637X 729 1 21 S2CID 118421255 Exploring the Coma Virgo Cloud PDF GEMINI 2 12 1 9 April 1978 French Sue 2004 Deep Sky Wonders Markarian s Chain Sky amp Telescope 107 5 88 91 Rhode Katherine L 2012 Exploring the Correlations between Globular Cluster Populations and Supermassive Black Holes in Giant Galaxies The Astronomical Journal 144 5 154 arXiv 1210 4570 Bibcode 2012AJ 144 154R doi 10 1088 0004 6256 144 5 154 hdl 2022 19083 ISSN 1538 3881 S2CID 118565802 O Meara Stephen James 2011 06 30 Deep Sky Companions The Secret Deep Cambridge University Press ISBN 978 1 139 50007 4 List of black hole candidates www johnstonsarchive net Retrieved 2017 09 17 NGC 4473 Fact Sheet StarDate s Black Hole Encyclopedia blackholes stardate org Retrieved 2017 08 02 Wolfram Alpha Computational Knowledge Engine www wolframalpha com Retrieved 2017 10 28 External links Edit Wikimedia Commons has media related to NGC 4473 NGC 4473 on WikiSky DSS2 SDSS GALEX IRAS Hydrogen a X Ray Astrophoto Sky Map Articles and images Retrieved from https en wikipedia org w index php title NGC 4473 amp oldid 1115678455, wikipedia, wiki, book, books, library,

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