NGC 4473

Last updated • 1 min readFrom Wikipedia, The Free Encyclopedia
NGC 4473
SDSS NGC 4473.jpg
SDSS image of the elliptical galaxy NGC 4473.
Observation data (J2000 epoch)
Constellation Coma Berenices
Right ascension 12h 29m 48.9s [1]
Declination 13° 25′ 46″ [1]
Redshift 0.007485 [1]
Heliocentric radial velocity 2244 km/s [1]
Distance 52.74 Mly
Group or cluster Virgo Cluster
Apparent magnitude  (V)11.16 [1]
Characteristics
Type E5 [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]

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]

Contents

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

Related Research Articles

<span class="mw-page-title-main">Messier 49</span> Elliptical galaxy in the constellation Virgo

Messier 49 is a giant elliptical galaxy about 56 million light-years away in the equatorial constellation of Virgo. This galaxy was discovered by astronomer Charles Messier in 1777.

<span class="mw-page-title-main">Messier 85</span> Elliptical galaxy in the constellation Coma Berenices

Messier 85 is a lenticular galaxy, or elliptical galaxy for other authors, in the Coma Berenices constellation. It is 60 million light-years away, and it is estimated to be 125,000 light-years across.

<span class="mw-page-title-main">Messier 89</span> Elliptical galaxy in the constellation Virgo

Messier 89 is an elliptical galaxy in the constellation Virgo. It was discovered by Charles Messier on March 18, 1781. M89 is a member of the Virgo Cluster of galaxies.

<span class="mw-page-title-main">NGC 4450</span> Spiral galaxy in the constellation Coma Berenices

NGC 4450 is a spiral galaxy in the constellation Coma Berenices.

<span class="mw-page-title-main">NGC 4494</span> Galaxy in the constellation Coma Berenices

NGC 4494 is an elliptical galaxy located in the constellation Coma Berenices. It is located at a distance of circa 45 million light years from Earth, which, given its apparent dimensions, means that NGC 4494 is about 60,000 light years across. It was discovered by William Herschel in 1785.

<span class="mw-page-title-main">NGC 4477</span> Galaxy in the constellation Coma Berenices

NGC 4477 is a barred lenticular galaxy located about 55 million light-years away in the constellation of Coma Berenices. NGC 4477 is classified as a type 2 Seyfert galaxy. The galaxy was discovered by astronomer William Herschel on April 8, 1784. NGC 4477 is a member of Markarian's Chain which forms part of the larger Virgo Cluster.

<span class="mw-page-title-main">NGC 4458</span> Galaxy in the Virgo constellation

NGC 4458 is an elliptical galaxy located about 54 million light-years away in the constellation of Virgo. It was discovered by astronomer William Herschel on April 12, 1784. NGC 4458 is a member of Markarian's Chain which is part of the Virgo Cluster. It is in a pair with the galaxy NGC 4461. NGC 4458 and NGC 4461 are interacting with each other.

<span class="mw-page-title-main">NGC 4461</span> Galaxy in the constellation Virgo

NGC 4461 is a lenticular galaxy located about 50 million light-years away in the constellation of Virgo. It was discovered by astronomer William Herschel on April 12, 1784. NGC 4461 is a member of Markarian's Chain which is part of the Virgo Cluster.

<span class="mw-page-title-main">NGC 4459</span> Galaxy in the constellation Coma Berenicies

NGC 4459 is a lenticular galaxy located about 50 million light-years away in the constellation of Coma Berenices. NGC 4459 is also classified as a LINER galaxy. NGC 4459 was discovered by astronomer William Herschel on January 14, 1787. NGC 4459 is a member of the Virgo Cluster.

<span class="mw-page-title-main">NGC 4468</span> Galaxy in the constellation Coma Berenices

NGC 4468 is a dwarf elliptical galaxy located about 55 million light-years away in the constellation of Coma Berenices. The galaxy was discovered by astronomer William Herschel on January 14, 1787. It is a member of the Virgo Cluster.

<span class="mw-page-title-main">NGC 4689</span> Galaxy in the constellation Coma Berenices

NGC 4689 is a spiral galaxy located about 54 million light-years away in the constellation of Coma Berenices. NGC 4689 is also classified as a LINER galaxy. NGC 4689 is inclined at an angle of about 36° which means that the galaxy is seen almost face-on to the Earth's line of sight. NGC 4689 was discovered by astronomer William Herschel on April 12, 1784. The galaxy is a member of the Virgo Cluster.

<span class="mw-page-title-main">NGC 4478</span> Galaxy in the constellation of Virgo

NGC 4478 is an elliptical galaxy located about 50 million light-years away in the constellation Virgo. NGC 4478 was discovered by astronomer William Herschel on April 12, 1784. NGC 4478 is a member of the Virgo Cluster.

<span class="mw-page-title-main">NGC 4498</span> Galaxy in the constellation Coma Berenices

NGC 4498 is a barred spiral galaxy located about 50 million light-years away in the constellation Coma Berenices. NGC 4498 was discovered by astronomer William Herschel on March 21, 1784. NGC 4498 is a member of the Virgo Cluster.

<span class="mw-page-title-main">NGC 4515</span> Galaxy in the constellation Coma Berenices

NGC 4515 is a lenticular galaxy located about 57 million light-years away in the constellation Coma Berenices. NGC 4515 was discovered by astronomer William Herschel on March 21, 1784. The galaxy is a member of the Virgo Cluster.

<span class="mw-page-title-main">NGC 4564</span> Elliptical galaxy in the constellation Virgo

NGC 4564 is an elliptical galaxy located about 57 million light-years away in the constellation Virgo. NGC 4564 was discovered by astronomer William Herschel on March 15, 1784. The galaxy is also a member of the Virgo Cluster.

<span class="mw-page-title-main">NGC 4596</span> Galaxy in the constellation Virgo

NGC 4596 is a barred lenticular galaxy located about 55 million light-years away in the constellation Virgo. NGC 4596 was discovered by astronomer William Herschel on March 15, 1784. NGC 4596 is a member of the Virgo Cluster and has an inclination of about 38°.

<span class="mw-page-title-main">NGC 5982</span> Galaxy in the constellation Draco

NGC 5982 is an elliptical 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 5982 is about 100,000 light years across. It was discovered by William Herschel on May 25, 1788.

<span class="mw-page-title-main">NGC 4312</span> Galaxy in the constellation Coma Berenices

NGC 4312 is an edge-on unbarred spiral galaxy located about 55 million light-years away in the constellation Coma Berenices. It was discovered by astronomer William Herschel on January 14, 1787. NGC 4312 is a member of the Virgo Cluster and is a LINER galaxy.

<span class="mw-page-title-main">NGC 4318</span> Galaxy in the constellation Virgo

NGC 4318 is a small lenticular galaxy located about 72 million light-years away in the constellation Virgo. It was discovered by astronomer John Herschel on January 18, 1828. NGC 4318 is a member of the Virgo W′ group, a group of galaxies in the background of the Virgo Cluster that is centered on the giant elliptical galaxy NGC 4365.

<span class="mw-page-title-main">NGC 4546</span> Galaxy in the constellation Virgo

NGC 4546 is a lenticular field galaxy located in the direction of the constellation Virgo, with a total population of globular clusters estimated at about 390. It is a member of the Virgo II Groups, a series of galaxies and galaxy clusters strung out from the southern edge of the Virgo Supercluster.

References

  1. 1 2 3 4 5 6 7 8 9 "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. 1 2 3 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. Archived from the original on 2017-08-03. 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. Archived from the original (PDF) on 2014-09-25. Retrieved 2017-08-03.
  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.
This page is based on this Wikipedia article
Text is available under the CC BY-SA 4.0 license; additional terms may apply.
Images, videos and audio are available under their respective licenses.