NGC 4476

Last updated
NGC 4476
SDSS NGC 4476.jpeg
SDSS image of NGC 4476
Observation data (J2000 epoch)
Constellation Virgo
Right ascension 12h 29m 59.1s [1]
Declination 12° 20′ 55″ [1]
Redshift 0.006565/1968 km/s [1]
Distance 55.4 Mly [2]
Group or cluster Virgo Cluster
Apparent magnitude  (V)13.0 [1]
Characteristics
Type SA0^-(r) [1]
Size~31,000 ly (estimated) [1]
Apparent size  (V)1.67 x 1.14 [1]
Other designations
CGCG 70-128, IRAS 12274+1237, MCG 2-32-96, PGC 41255, UGC 7637, VCC 1250 [1]

NGC 4476 is a lenticular galaxy located about 55 million light-years away [3] in the constellation Virgo. [4] NGC 4476 was discovered by astronomer William Herschel on April 12, 1784. [5] The galaxy is a member of the Virgo Cluster. [6] [7]

Contents

Dust disk

NGC 4476 has a highly inclined disk of dust that surrounds its nucleus. [8]

HST image of the dust disk in NGC 4476. NGC 4476 HST 9401 R850B475.png
HST image of the dust disk in NGC 4476.

Interstellar medium

NGC 4476 is extremely deficient in neutral atomic hydrogen (HI). This may have been caused by a tidal interaction with another galaxy or by ram-pressure stripping caused by the intracluster medium of the Virgo Cluster. Because NGC 4476 appears to lie close to Messier 87, there are many galaxies in its vicinity that may have interacted with it. However, optical images of the galaxy show no evidence of an interaction so this is unlikely to account for the deficiency in neutral atomic hydrogen.

It is more likely that the deficiency in neutral atomic hydrogen in NGC 4476 is due to ram-pressure stripping caused by the intracluster medium as it traveled on a highly radial orbit through the center of the Virgo Cluster. However, at the galaxy's projected distance from Messier 87, the observed ram-pressure stripping exerted on NGC 4476 is not sufficient to cause sufficient effects on the galaxy's interstellar medium. Surprisingly, there is an absence of H I in the inner regions of the galaxy. This may possibly suggest that the physical conditions of the ISM of NGC 4476 are very different from those of typical Virgo Cluster spirals. [6]

See also

Related Research Articles

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<span class="mw-page-title-main">NGC 4457</span> Galaxy in the constellation of Virgo

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<span class="mw-page-title-main">NGC 4647</span> Spiral galaxy in the constellation Virgo

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<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 4482</span> Galaxy in the constellation of Virgo

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<span class="mw-page-title-main">NGC 4522</span> Spiral galaxy in the constellation of Virgo

NGC 4522 is an edge-on spiral galaxy located about 60 million light-years away within the Virgo Cluster in the constellation Virgo. NGC 4522 is losing its molecular gas though ram-pressure stripping as it plows though the cluster at a speed of more than 10 million kilometres per hour. The galaxy was discovered by astronomer John Herschel on January 18, 1828.

<span class="mw-page-title-main">NGC 6040</span> Galaxy in the constellation Hercules

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<span class="mw-page-title-main">NGC 1272</span> Galaxy in the constellation Perseus

NGC 1272 is a massive elliptical galaxy located about 230 million light-years away in the constellation Perseus. It was discovered by astronomer Heinrich d'Arrest on February 14, 1863. NGC 1272 has an active nucleus and is the second brightest member of the Perseus Cluster after NGC 1275.

<span class="mw-page-title-main">NGC 3860</span> Spiral galaxy in the constellation Leo

NGC 3860 is a spiral galaxy located about 340 million light-years away in the constellation Leo. NGC 3860 was discovered by astronomer William Herschel on April 27, 1785. The galaxy is a member of the Leo Cluster and is a low-luminosity AGN (LLAGN). Gavazzi et al. however classified NGC 3860 as a strong AGN which may have been triggered by a supermassive black hole in the center of the galaxy.

<span class="mw-page-title-main">NGC 4307</span> Spiral galaxy in the constellation Virgo

NGC 4307 is an edge-on spiral galaxy located about 65 million light-years away in the constellation Virgo. It was discovered by astronomer Christian Peters in 1881 and is a member of the Virgo Cluster. It is also a LINER galaxy.

References

  1. 1 2 3 4 5 6 7 8 "NASA/IPAC Extragalactic Database". Results for NGC 4476. Retrieved 2017-10-08.
  2. ↑ "parsecs to lightyears conversion" . Retrieved 2017-09-30.
  3. ↑ "Your NED Search Results". ned.ipac.caltech.edu. Retrieved 2017-10-09.
  4. ↑ Rojas, Sebastián García. "Galaxy NGC 4476 - Galaxy in Virgo Constellation · Deep Sky Objects Browser". DSO Browser. Retrieved 2017-10-09.
  5. ↑ "New General Catalog Objects: NGC 4450 - 4499". cseligman.com. Retrieved 2017-10-08.
  6. 1 2 Lucero, D. M.; Young, L. M; van Gorkom, J. H. (13 October 2004). "Ram Pressure Stripping in the Low-Luminosity Virgo Cluster Elliptical Galaxy NGC 4476". The Astronomical Journal. 129 (2): 647–655. arXiv: astro-ph/0410424 . doi:10.1086/426750. S2CID   11491646.
  7. ↑ "Detailed Object Classifications". ned.ipac.caltech.edu. Retrieved 2017-10-09.
  8. ↑ Young, L. M. (8 May 2002). "Molecular Gas in Elliptical Galaxies: Distribution and Kinematics". The Astronomical Journal. 124 (2): 788–810. arXiv: astro-ph/0205162 . Bibcode:2002AJ....124..788Y. doi:10.1086/341648. S2CID   13963035.


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