NGC 4800

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NGC 4800
NGC 4800 hst 09042 R814B606.png
Hubble Space Telescope image of NGC 4800
Observation data (J2000 epoch)
Constellation Canes Venatici
Right ascension 12h 54m 37.78208s [1]
Declination +46° 31′ 52.2815″ [1]
Redshift 0.002972 [2]
Helio radial velocity 891±17  km/s [2]
Distance 95  Mly (29.0  Mpc) [3]
Apparent magnitude  (B)12.0 [4]
Characteristics
Type SA(rs)b [5]
Other designations
NGC 4800, LEDA 43931, 2MASX J12543777+4631521 [4]

NGC 4800 is an isolated [6] spiral galaxy in the constellation Canes Venatici, located at a distance of 95 megalight-years from the Milky Way. [3] It was discovered by William Herschel on April 1, 1788. [7] The morphological classification of this galaxy is SA(rs)b, [5] indicating a spiral galaxy with no visual bar at the nucleus (SA), an incomplete ring structure (rs), and moderately-tightly wound spiral arms (b). The galactic plane is inclined to the line of sight by an angle of 43°, and the long axis is oriented along a position angle of 25°. [8] There is a weak bar structure at the nucleus that is visible in the infrared. [6]

The galaxy has a low-luminosity active galactic nucleus with an HII region at the core. [5] The circumnuclear zone contains a double ring structure of "ultra-compact nuclear rings"; the inner ring has a radius of 30 pc and the outer ring's radius is about 130 pc. [6] The upper limit on the mass of the central supermassive black hole is estimated as 2.0×107  M☉ , or 20 million times the mass of the Sun. [9]

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<span class="mw-page-title-main">NGC 4725</span> Galaxy in the constellation Coma Berenices

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<span class="mw-page-title-main">NGC 7793</span> Flocculent spiral galaxy in the constellation Sculptor

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<span class="mw-page-title-main">NGC 3226</span> Dwarf elliptical galaxy in the constellation Leo

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<span class="mw-page-title-main">NGC 3486</span> Galaxy in the constellation Leo Minor

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<span class="mw-page-title-main">NGC 514</span> Spiral galaxy in the constellation Pisces

NGC 514 is a low-luminosity, intermediate spiral galaxy in the equatorial constellation of Pisces, located at a distance of approximately 83 million light-years from the Milky Way. It was discovered on 16 October 1784 by astronomer William Herschel. The general form of the galaxy is specified by its morphological classification of SAB(rs)c, which indicates it has a weak bar system at the core (SAB), an incomplete ring formation around the bar (rs), and somewhat loosely-wound spiral arms (c). This galaxy has an H II nucleus with an extended region that displays weak emission lines in the optical range, but not in the near infrared. The suspected supermassive black hole at the core has an estimated mass of 3.2×106 M☉.

<span class="mw-page-title-main">NGC 278</span> Isolated spiral galaxy in the constellation Cassiopeia

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<span class="mw-page-title-main">NGC 4536</span> Spiral galaxy in the constellation Virgo

NGC 4536 is an intermediate spiral galaxy in the constellation Virgo located about 10° south of the midpoint of the Virgo cluster. However, it is not considered a member of the cluster. Rather, it is a member of the M61 Group of galaxies, which 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. The morphological classification in the De Vaucouleurs system is SAB(rs)bc, which indicates it is a weakly barred spiral galaxy with a hint of an inner ring structure plus moderate to loosely wound arms. It does not have a classical bulge around the nucleus.

<span class="mw-page-title-main">NGC 1566</span> Galaxy in the constellation Dorado

NGC 1566, sometimes known as the Spanish Dancer, is an intermediate spiral galaxy in the constellation Dorado, positioned about 3.5° to the south of the star Gamma Doradus. It was discovered on May 28, 1826 by Scottish astronomer James Dunlop. At 10th magnitude, it requires a telescope to view. The distance to this galaxy remains elusive, with measurements ranging from 6 Mpc up to 21 Mpc.

<span class="mw-page-title-main">NGC 4639</span> Barred spiral galaxy in the constellation Virgo

NGC 4639 is a barred spiral galaxy located in the equatorial constellation of Virgo. It was discovered by German-born astronomer William Herschel on April 12, 1784. John L. E. Dreyer described it as "pretty bright, small, extended, mottled but not resolved, 12th magnitude star 1 arcmin to southeast". This is a relatively nearby galaxy, lying approximately 72 million light-years away from the Milky Way. It is a companion to NGC 4654, and the two appear to have interacted roughly 500 million years ago. NGC 4639 is a member of the Virgo Cluster.

<span class="mw-page-title-main">NGC 1808</span> Barred spiral galaxy in the constellation Columba

NGC 1808 is a barred spiral galaxy located in the southern constellation of Columba, about two degrees to the south and east of Gamma Caeli. It was discovered by Scottish astronomer James Dunlop, who described it as a "faint nebula". The galaxy is a member of the NGC 1808 group, which is part of the larger Dorado Group.

<span class="mw-page-title-main">NGC 5962</span> Spiral galaxy with a bar structure in the constellation Serpens

NGC 5962 is a spiral galaxy in the equatorial constellation of Serpens Caput. It was discovered by the Anglo-German astronomer William Herschel on March 21, 1784. The NGC 5962 galaxy is located at a distance of 120 million light years and is receding with a heliocentric radial velocity of 1,957 km/s. It is the brightest member of the eponymously-named NGC 5962 group, which overlaps with the nearby NGC 5970 group; the two groups may be gravitationally bound.

<span class="mw-page-title-main">NGC 4102</span> Intermediate barred spiral galaxy in the constellation Ursa Major

NGC 4102 is an intermediate barred spiral galaxy located in the northern constellation of Ursa Major. It is visible in a small telescope and has an apparent visual magnitude of 11.2. The galaxy was discovered April 12, 1789 by William Herschel. J. L. E. Dreyer described it as "bright, pretty small, round, brighter middle and bright nucleus". This galaxy is located at a distance of 60 million light years and is receding with a heliocentric radial velocity of 837 km/s. It is a member of the Ursa Major group of galaxies.

<span class="mw-page-title-main">NGC 1614</span> Spiral galaxy in the constellation Eridanus

NGC 1614 is the New General Catalogue identifier for a spiral galaxy in the equatorial constellation of Eridanus. It was discovered on December 29, 1885 by American astronomer Lewis Swift, who described it in a shorthand notation as: pretty faint, small, round, a little brighter middle. The nebula was then catalogued by Danish-Irish astronomer J. L. E. Drayer in 1888. When direct photography became available, it was noted that this galaxy displayed some conspicuous peculiarities. American astronomer Halton Arp included it in his 1966 Atlas of Peculiar Galaxies. In 1971, Swiss astronomer Fritz Zwicky described it as a "blue post-eruptive galaxy, compact patchy core, spiral plumes, long blue jet SSW".

<span class="mw-page-title-main">NGC 5643</span> Galaxy in the constellation Lupus

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<span class="mw-page-title-main">NGC 7469</span> Galaxy located in the constellation Pegasus

NGC 7469 is an intermediate spiral galaxy in the constellation of Pegasus. NGC 7469 is located about 200 million light-years away from Earth, which means, given its apparent dimensions, that NGC 7469 is approximately 90,000 light-years across. It was discovered by William Herschel on November 12, 1784.

<span class="mw-page-title-main">NGC 1386</span> 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.

<span class="mw-page-title-main">NGC 2273</span> 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.

References

  1. 1 2 Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics . 616. A1. arXiv: 1804.09365 . Bibcode: 2018A&A...616A...1G . doi: 10.1051/0004-6361/201833051 . Gaia DR2 record for this source at VizieR.
  2. 1 2 "NASA/IPAC Extragalactic Database". ned.ipac.caltech.edu. Retrieved 31 May 2019.
  3. 1 2 Sorce, J. G.; et al. (October 2014). "From Spitzer Galaxy photometry to Tully-Fisher distances". Monthly Notices of the Royal Astronomical Society. 444 (1): 527–541. arXiv: 1408.0729 . Bibcode:2014MNRAS.444..527S. doi:10.1093/mnras/stu1450.
  4. 1 2 "NGC 4800". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 31 May 2019.
  5. 1 2 3 González Delgado, Rosa M.; et al. (April 2004). "The Stellar Populations of Low-Luminosity Active Galactic Nuclei. II. Space Telescope Imaging Spectrograph Observations". The Astrophysical Journal. 605 (1): 127–143. arXiv: astro-ph/0401414 . Bibcode:2004ApJ...605..127G. doi:10.1086/382216. S2CID   119471662.
  6. 1 2 3 Comerón, S.; et al. (February 2008). "Discovery of ultra-compact nuclear rings in three spiral galaxies". Astronomy and Astrophysics. 478 (2): 403–407. arXiv: 0711.4230 . Bibcode:2008A&A...478..403C. doi:10.1051/0004-6361:20078845. S2CID   14678950.
  7. ↑ Seligman, Courtney. "New General Catalog Objects: NGC 4800 - 4849". New General Catalog Objects: NGC 4800 - 4849. Retrieved 31 May 2019.
  8. ↑ Ho, Luis C.; et al. (February 2002). "An Efficient Strategy to Select Targets for Gasdynamical Measurements of Black Hole Masses Using the Hubble Space Telescope". The Publications of the Astronomical Society of the Pacific. 114 (792): 137–143. arXiv: astro-ph/0110671 . Bibcode:2002PASP..114..137H. doi:10.1086/338546. S2CID   17982236.
  9. ↑ Sarzi, Marc; et al. (March 2002). "Limits on the Mass of the Central Black Hole in 16 Nearby Bulges". The Astrophysical Journal. 567 (1): 237–246. arXiv: astro-ph/0110673 . Bibcode:2002ApJ...567..237S. doi:10.1086/338351. S2CID   50115334.
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