NGC 4340

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NGC 4340
NGC 4340 Hubble WikiSky.jpg
NGC 4340 imaged by the Hubble Space Telescope
Observation data (J2000 epoch)
Constellation Coma Berenices
Right ascension 12h 23m 35.3s [1]
Declination 16° 43′ 20″ [1]
Redshift 0.003112/933 km/s [1]
Distance 56,070,000 ly
Group or cluster Virgo Cluster
Apparent magnitude  (V)12.10 [1]
Characteristics
Type SB0^+(r) [1]
Size~ 53,400 ly
Apparent size  (V)3.5 x 2.8 [1]
Other designations
CGCG 99-36, MCG 3-32-21, PGC 40245, UGC 7467, VCC 654 [1]

NGC 4340 is a double-barred lenticular galaxy [2] [3] located about 55 million light-years away [4] in the constellation of Coma Berenices. [5] NGC 4340 was discovered by astronomer William Herschel on March 21, 1784. [6] NGC 4340 is a member of the Virgo Cluster. [2] [3] NGC 4340 is generally thought to be in a pair with the galaxy NGC 4350. [6] [7]

Contents

Physical characteristics

NGC 4340 has a small inner bar embedded in a luminous stellar nuclear ring. Even though the ring is luminous, there are no star-forming regions. Instead, the ring is made of mostly old stars in a gas-poor environment. The color of the ring is the same as the color of the surrounding bulge suggesting that it is probably an old, “fossil” remnant of an earlier episode of star-formation. [2] Crossing the inner ring, there is a larger primary bar with ansae at the ends. [3] Careful inspection shows that the two bars are slightly misaligned, which suggests they may be independently rotating. [2] The larger primary bar connects to another ring that surrounds the central regions of the galaxy. [7]

Image of the galaxies NGC 4340 (center) and NGC 4350 (bottom left corner) NGC 4340 and NGC 4350.jpg
Image of the galaxies NGC 4340 (center) and NGC 4350 (bottom left corner)

Supernova

One supernova has been observed in NGC 4340: SN 1977A (type unknown, mag. 16.2) was discovered by Piotr Grigor'evich Kulikovsky on 27 January 1977. [8] [9]

See also

Related Research Articles

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NGC 4559 is an intermediate spiral galaxy with a weak inner ring structure in the constellation Coma Berenices. Distance estimates for NGC 4559 range from about 28 million light-years to 31 million light-years, averaging about 29 million light-years. It was discovered on 11 April 1785 by German-British astronomer William Herschel.

<span class="mw-page-title-main">NGC 7029</span> Galaxy in the constellation Indus

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<span class="mw-page-title-main">NGC 7098</span> Galaxy in the constellation Octans

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<span class="mw-page-title-main">NGC 4274</span> Galaxy in the constellation Coma Berenices

NGC 4274 is a barred spiral 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 4274 is about 95,000 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 4489</span> Galaxy in the constellation Coma Berenices

NGC 4489 is a dwarf elliptical galaxy located about 60 million light-years away in the constellation of Coma Berenices. It was discovered by astronomer William Herschel on March 21, 1784. NGC 4489 is a member of the Virgo Cluster.

<span class="mw-page-title-main">NGC 4454</span> Galaxy in the constellation Virgo

NGC 4454 is a barred spiral galaxy located about 123 million light-years away in the constellation of Virgo. NGC 4454 was discovered by astronomer William Herschel on April 17, 1784.

<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 4873</span> Galaxy in the constellation Coma Berenices

NGC 4873 is a lenticular galaxy located about 270 million light-years away in the constellation of Coma Berenices. NGC 4873 was discovered by astronomer Heinrich d'Arrest on May 10, 1863. The galaxy is a member of the Coma Cluster.

<span class="mw-page-title-main">NGC 4919</span> Galaxy in the constellation Coma Berenices

NGC 4919 is a lenticular galaxy located about 340 million light-years away in the constellation of Coma Berenices. NGC 4919 was discovered by astronomer Heinrich d'Arrest on May 5, 1864. NGC 4919 is a member of the Coma 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 4907</span> Barred spiral galaxy in the constellation Coma Berenices

NGC 4907 is a barred spiral galaxy located about 270 million light-years away in the constellation of Coma Berenices. It is also classified as a LINER galaxy. NGC 4907 was discovered by astronomer Heinrich d'Arrest on May 5, 1864. The galaxy is a member of the Coma Cluster, located equidistant between NGC 4928 and NGC 4829.

<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 4479</span> Galaxy in the constellation Coma Berenices

NGC 4479 is a barred lenticular galaxy located about 60 million light-years away in the constellation of Coma Berenices. NGC 4479 was discovered by astronomer William Herschel on April 8, 1784. It is a member of the Virgo Cluster.

<span class="mw-page-title-main">NGC 4474</span> Galaxy in the constellation Coma Berenices

NGC 4474 is an edge-on lenticular galaxy located about 50 million light-years away in the constellation Coma Berenices. NGC 4474 was discovered by astronomer William Herschel on April 8, 1784. It is a member of the Virgo Cluster.

<span class="mw-page-title-main">NGC 4506</span> Galaxy in the constellation Coma Berenices

NGC 4506 is a spiral galaxy located around 50 million light-years away in the constellation Coma Berenices. It is classified as peculiar due to the presence of dust that surrounds its nucleus. NGC 4506 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 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 4523</span> Spiral galaxy in the constellation Coma Berenices

NGC 4523 is a Magellanic spiral galaxy located about 35 to 50 million light-years away in the constellation Coma Berenices. It was discovered by astronomer Heinrich d'Arrest on April 19, 1865. NGC 4523 is a member of the Virgo Cluster. A distance of for NGC 4523 was derived from using yellow supergiants in the galaxy as standard candles.

<span class="mw-page-title-main">NGC 3313</span> Galaxy in the constellation Hydra

NGC 3313 is a large barred spiral galaxy located about 55 megaparsecs away in the constellation Hydra. It was discovered by astronomer Ormond Stone in 1886 and is an outlying member of the Hydra Cluster.

<span class="mw-page-title-main">NGC 5004</span> Galaxy in constellation Coma Berenices

NGC 5004 is a lenticular galaxy in the constellation Coma Berenices. The object was discovered by astronomer William Herschel on 13 March 1785, using an 18.7-inch aperture reflector telescope. Due to its moderate apparent magnitude (+13), it is visible only with amateur telescopes or with superior equipment.

References

  1. 1 2 3 4 5 6 7 "NASA/IPAC Extragalactic Database". Results for NGC 4340. Retrieved 2017-08-13.
  2. 1 2 3 4 Erwin, Peter; Vega Beltr'an, Juan Carlos; Beckman, John (2001). "NGC 4340: Double Bar + Fossil Nuclear Ring". Astrophysics and Space Science. 277 (Suppl 1): 457. arXiv: astro-ph/0009178 . Bibcode:2001ApSSS.277..457E. doi:10.1023/A:1012798126831. S2CID   118887340.
  3. 1 2 3 "NGC 4340 - SB(r)0+". The De Vaucouleurs Atlas of Galaxies. Retrieved 2017-08-13.
  4. ↑ "Your NED Search Results". ned.ipac.caltech.edu. Retrieved 2017-08-14.
  5. ↑ Rojas, Sebastián García. "Galaxy NGC 4340 - Galaxy in Coma Berenices Constellation · Deep Sky Objects Browser". DSO Browser. Retrieved 2017-08-14.
  6. 1 2 "New General Catalog Objects: NGC 4300 - 4349". cseligman.com. Retrieved 2017-08-14.
  7. 1 2 König, Michael; Binnewies, Stefan (2017-09-30). The Cambridge Photographic Atlas of Galaxies. Cambridge University Press. p. 259. ISBN   978-1-107-18948-5.
  8. ↑ Aksenov, E. P.; Kulikovskij (1977). "Supernova in NGC 4340". International Astronomical Union Circular (3035): 1. Bibcode:1977IAUC.3035....1A.
  9. ↑ "SN 1977A". Transient Name Server. IAU . Retrieved 4 December 2024.
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