NGC 7640

Last updated
NGC 7640
NGC 7640 - HST - Potw1706a.tif
NGC 7640 (photographed by the Hubble Space Telescope
Observation data (J2000 epoch)
Constellation Andromeda
Right ascension 23h 22m 06.58s [1]
Declination +40° 50′ 43.5″ [1]
Redshift 0.001231 ± 0.000004 [1]
Heliocentric radial velocity +369 ± 1 km/s [1]
Distance 29.72 ± 0.5 Mly [1]
Apparent magnitude  (V)11.1
Absolute magnitude  (V)11.86 [1]
Characteristics
Type SB(s)c
Apparent size  (V)10.5′ × 2′ [1]
Other designations
NGC 7640

NGC 7640 is a barred spiral galaxy in the constellation of Andromeda. Discovered on October 17, 1786, by the English astronomer William Herschel, NGC 7640 is an 11th magnitude barred spiral galaxy. Also known as LEDA 71220, UGC 12554 and IRAS 23197+4034, this galaxy is located in the constellation Andromeda, 38.8 million light-years from Earth. Galaxies of this type are recognizable by their spiral arms, which fan out not from a circular core, but from an elongated bar cutting through the galaxy's centre. NGC 7640 might not look much like a spiral, but this is due to the orientation of the galaxy with respect to an observer on Earth. There is evidence that this galaxy has experienced an interaction with another galaxy in the (astronomically) recent past. [2]

It is not immediately obvious this is a spiral galaxy from the photograph because it is edge on. [2]

Related Research Articles

<span class="mw-page-title-main">NGC 13</span> Galaxy in the constellation Andromeda

NGC 13 is a spiral galaxy in the constellation Andromeda. It is estimated to be about 220 million light-years away from the Sun. It was discovered on November 26, 1790, by William Herschel.

<span class="mw-page-title-main">NGC 48</span> Galaxy in the constellation Andromeda

The New General Catalogue object NGC 48 is a barred spiral galaxy located approximately 79.3 million light-years from the Solar System in the constellation Andromeda.

<span class="mw-page-title-main">NGC 5566</span> Galaxy in the constellation Virgo

NGC 5566 is a barred spiral galaxy in the constellation Virgo, which is approximately 66 million light years away from Earth. The galaxy is the biggest in the constellation Virgo, stretching nearly 150,000 light years in diameter. The galaxy NGC 5566 was discovered on 30 April 1786 by the German-British astronomer William Herschel. It is included in Halton Arp's Atlas of Peculiar Galaxies. It is a member of the NGC 5566 Group of galaxies, itself one of the Virgo III Groups strung out to the east of the Virgo Supercluster of galaxies.

<span class="mw-page-title-main">NGC 72</span> Galaxy in the constellation Andromeda

NGC 72 is a barred spiral galaxy estimated to be about 320 million light-years away in the constellation of Andromeda. It was discovered by R. J. Mitchell in 1855 and its magnitude is 13.5.

<span class="mw-page-title-main">NGC 2217</span> Galaxy in the constellation Canis Major

NGC 2217 is a nearly face-on lenticular galaxy of about 100 thousand light-years across that lies roughly 65 million light years from Earth in the constellation of Canis Major. It is part of the NGC 2217 Group of galaxies. It is classified as a barred spiral galaxy.

<span class="mw-page-title-main">NGC 112</span> Galaxy in the constellation Andromeda

NGC 112 is a barred spiral galaxy located in the constellation Andromeda. It was discovered by American astronomer Lewis Swift on September 17, 1885. The galaxy lies approximately 295 million light-years from Earth, and is about 75,000 light-years in diameter.

<span class="mw-page-title-main">NGC 4490</span> Interacting galaxy in constellation Canes Venatici

NGC 4490, also known as the Cocoon Galaxy, is a barred spiral galaxy in the constellation Canes Venatici. William Herschel discovered it in 1788. It is known to be of the closest interacting/merging galactic system. The galaxy lies at a distance of 25 million light years from Earth making it located in the local universe. It interacts with its smaller companion NGC 4485 and as a result is a starburst galaxy. NGC 4490 and NGC 4485 are collectively known in the Atlas of Peculiar Galaxies as Arp 269. The two galaxies has already made their closest approach and are rushing away from each other. It's been discovered that NGC 4490 has a double nucleus.

<span class="mw-page-title-main">NGC 169</span> Barred spiral galaxy in Andromeda

NGC 169 is a barred spiral galaxy located in the constellation Andromeda. It was discovered on September 18, 1857 by R. J. Mitchell.

<span class="mw-page-title-main">NGC 218</span> Galaxy in the constellation Andromeda

NGC 218, also known as UGC 480, is a spiral galaxy located approximately 500 million light-years from the Sun in the constellation Andromeda. It was discovered on October 17, 1876 by Édouard Stephan, and is interacting with the galaxy PGC 2726.

<span class="mw-page-title-main">NGC 226</span> Spiral galaxy in the constellation Andromeda

NGC 226 is a spiral galaxy located approximately 216 million light-years from the Sun in the constellation Andromeda. It was discovered on December 21, 1786, by William Herschel.

<span class="mw-page-title-main">NGC 389</span> Lenticular galaxy in constellation Andromeda

NGC 389 is a lenticular galaxy located approximately 239 million light-years from the Solar System in the constellation Andromeda. It was discovered on September 6, 1885 by Lewis Swift. It was described by Dreyer as "extremely faint, extremely small, round, star near."

<span class="mw-page-title-main">NGC 425</span> Galaxy in constellation Andromeda

NGC 425 is a spiral galaxy in the constellation of Andromeda. It was discovered on 29 October 1866 by Truman Safford.

<span class="mw-page-title-main">NGC 491</span> Barred spiral galaxy in the constellation of Sculptor

NGC 491 is a barred spiral galaxy located about 161 million light-years away from Earth, in the constellation Sculptor. NGC 491 was discovered by astronomer John Herschel on September 25, 1834.

<span class="mw-page-title-main">NGC 487</span> Galaxy in the constellation Cetus

NGC 487 is a barred spiral galaxy located about 250 million light-years away from Earth in the constellation Cetus. NGC 487's calculated velocity is 5949 km/s. NGC 487 was discovered by American astronomer Francis Leavenworth on November 28, 1885.

<span class="mw-page-title-main">NGC 480</span> Spiral galaxy in the constellation Cetus

NGC 480 is a spiral galaxy located about 546 million light-years away from Earth in the constellation Cetus. NGC 480 was discovered by American astronomer Francis Leavenworth In 1886.

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

NGC 7098 is a doubled barred spiral galaxy located about 95 million light-years away from Earth in the constellation of Octans. NGC 7098 has an estimated diameter of 152,400 light-years. NGC 7098 was discovered by astronomer John Herschel on September 22, 1835.

<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 4440</span> Galaxy in the constellation Virgo

NGC 4440 is a barred spiral galaxy located about 55 million light-years away in the constellation of Virgo. NGC 4440 was discovered by astronomer William Herschel on April 17, 1784. It 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 1189</span> Galaxy in the constellation Eridanus

NGC 1189 is a barred spiral galaxy approximately 105 million light-years away from Earth in the constellation of Eridanus. It was discovered by American astronomer Francis Leavenworth on December 2, 1885 with the 26" refractor at Leander McCormick Observatory.

References

  1. 1 2 3 4 5 6 7 "NASA/IPAC Extragalactic Database". Results for NGC 7640. Retrieved 2017-02-13.
  2. 1 2 "NASA TV". Hubble Sees Spiral in Andromeda. 2017-02-10. Retrieved 2017-02-13.


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.