NGC 70

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NGC 70
N70s-crop.jpg
NGC 70 is the spiral galaxy in the lower center of this image. The elliptical galaxies neighboring it are NGC 68 (lower) and NGC 71 (upper).
Observation data (J2000 epoch)
Constellation Andromeda
Right ascension 00h 18m 22.55s
Declination +30h 04m 43.4s
Redshift 0.023907 [1]
Heliocentric radial velocity 7167 km/s [1]
Distance 320-325 Mly [2] [3]
Apparent magnitude  (V)13.5 [4] [2]
Characteristics
Type Sb [5] Sbc [4] SA(rs)c [2]
Size180,000 [2]
Apparent size  (V)~1.7'x1.4' [5] [4] [6]
Other designations
IC 1539, UGC 174, Arp 113, VV 166a, MCG +05-01-067, 2MASX J00182252+3004465, IRAS 00157+2948, PGC 1194, UZC J001822.6+300446

NGC 70 is a spiral galaxy located in the constellation Andromeda. [7] It was discovered on October 7, 1855, by R. J. Mitchell [7] and was also observed on December 19, 1897 by Guillaume Bigourdan from France who described it as "extremely faint, very small, round, between 2 faint stars". [2]

NGC 70 is a member of a compact group of seven [8] or eight [9] galaxies, sometimes called the NGC 70 Group or the VV 166 Group. The group consists of three relatively bright galaxies: 70, 71 and 72 in the NGC catalog, along with four fainter galaxies. NGC 68 appears to be a group member, but its discrepant radial velocity and lack of tidal distortion suggests that it may be an unrelated galaxy along the group's line of sight. [9] In photographs the NGC 70 group resembles the much more famous Stephan's Quintet group, and it is a popular target for amateur astrophotographers.

NGC 70 (near-infrared) NGC 0070 2MASS.jpg
NGC 70 (near-infrared)

Related Research Articles

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NGC 5821 is a spiral galaxy with a ring structure in the constellation Boötes. It lies near a similarly massed galaxy, NGC 5820, at the same redshift. Both galaxies were discovered by the astronomer William Herschel.

<span class="mw-page-title-main">NGC 2082</span> Galaxy in the constellation Dorado

NGC 2082 is an intermediate spiral galaxy in the Dorado constellation. It was originally thought to be part of the Dorado Group of galaxies, but was later removed. It was discovered on November 30, 1834 by John Herschel.

<span class="mw-page-title-main">NGC 67</span> Galaxy in the constellation Andromeda

NGC 67 is an elliptical galaxy located in the constellation Andromeda that was discovered on October 7, 1855, by R. J. Mitchell, who described it as "extremely faint, very small, round". The galaxy belongs to the NGC 68 group, which also contains the galaxies NGC 68, NGC 69, NGC 70, NGC 71, NGC 72, and possibly NGC 74.

<span class="mw-page-title-main">NGC 68</span> Galaxy in the constellation Andromeda

NGC 68 is a lenticular galaxy, and the central member of the NGC 68 group, in the constellation Andromeda. The galaxy was discovered on September 11, 1784, by William Herschel, who observed the NGC 68 group as a single object and described it as "extremely faint, large, 3 or 4 stars plus nebulosity". As such, his reported location is between NGC 68, NGC 70, and NGC 71. By the time Dreyer looked at the galaxies to add to the NGC catalog, however, he was able to tell that the single galaxy observed by Herschel was in fact 3 adjacent galaxies, and cataloged them as NGC 68, NGC 70, and NGC 71.

<span class="mw-page-title-main">NGC 68 group</span> Galaxy group in the constellation Andromeda

VV 166, sometimes also called the NGC 70 galaxy group or Arp 113, is a cluster of galaxies in Andromeda. The main group was discovered in 1784 by William Herschel, who listed the galaxies as a single object. Later, in the 1880s, John Louis Emil Dreyer managed to discern some of the galaxies in this region and cataloged them. The prominent elliptical galaxy in the region, NGC 68, is probably not a member of the group.

<span class="mw-page-title-main">NGC 71</span> Galaxy in the constellation Andromeda

NGC 71 is an elliptical galaxy located in the constellation Andromeda. It is in the NGC 68 group. The galaxy was discovered by R. J. Mitchell in 1855, and observed in 1865 by Heinrich d'Arrest, who described it as "extremely faint, very small, round". The galaxy is about 110,000-130,000 light years across, making it just slightly larger than the Milky Way. The galaxy is the second largest in the NGC 68 group, after spiral galaxy NGC 70.

<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 117</span> Lenticular galaxy in the constellation Cetus

NGC 117 is a lenticular galaxy with a magnitude of 14.3 in the constellation Cetus. NGC 117 is its New General Catalogue designation. It was discovered on September 13, 1863 by the astronomer Albert Marth.

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

NGC 4457 is an intermediate spiral galaxy located about 55 million light-years away in the constellation of Virgo. It is also classified as a LINER galaxy, a class of active galaxy defined by their spectral line emissions. NGC 4457 Is inclined by about 33°. It was discovered by astronomer William Herschel on February 23, 1784. Despite being listed in the Virgo Cluster Catalog as VCC 1145, NGC 4457 is a member of the Virgo II Groups which form an extension 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 4647</span> Spiral galaxy in the constellation Virgo

NGC 4647 is an intermediate spiral galaxy estimated to be around 63 million light-years away in the constellation of Virgo. It was discovered by astronomer William Herschel on March 15, 1784. NGC 4647 is listed along with Messier 60 as being part of a pair of galaxies called Arp 116; their designation in Halton Arp's Atlas of Peculiar Galaxies. The galaxy is located on the outskirts of the Virgo Cluster.

<span class="mw-page-title-main">NGC 4630</span> Irregular galaxy in the constellation Virgo

NGC 4630 is an irregular galaxy located about 54 million light-years away in the constellation of Virgo. NGC 4630 was discovered by astronomer William Herschel on February 2, 1786. NGC 4630 is part of the Virgo II Groups which form a southern extension of the Virgo Cluster.

<span class="mw-page-title-main">NGC 4436</span> Lenticular or dwarf irregular galaxy in the constellation Virgo

NGC 4436 is a lenticular or dwarf elliptical galaxy located about 60 million light-years away in the constellation of Virgo. NGC 4436 was discovered by astronomer William Herschel on April 17, 1784. The galaxy is a member of the Virgo Cluster.

<span class="mw-page-title-main">NGC 4491</span> Galaxy in the constellation of Virgo

NGC 4491 is a dwarf barred spiral galaxy located about 55 million light-years away in the constellation Virgo. NGC 4491 was discovered by astronomer William Herschel on March 15, 1784. NGC 4491 is located in a subgroup of the Virgo Cluster centered on Messier 87 known as the Virgo A subgroup.

<span class="mw-page-title-main">NGC 498</span> Galaxy in the constellation Pisces

NGC 498 is a lenticular galaxy located about 260 million light-years away from Earth, in the constellation Pisces. NGC 498 was discovered by astronomer R. J. Mitchell on October 23, 1856.

<span class="mw-page-title-main">NGC 1487</span> Galaxy in the constellation Eridanus

NGC 1487 is an irregular galaxy in the constellation Eridanus. It was discovered by James Dunlop on Oct 29, 1826.

<span class="mw-page-title-main">NGC 918</span> Barred spiral galaxy in the constellation Aries

NGC 918 is a barred spiral galaxy in the constellation Aries, about 67 million light years from the Milky Way. It was discovered by John Herschel on Jan 11, 1831.

<span class="mw-page-title-main">NGC 823</span> Galaxy in the constellation Fornax

NGC 823, also known as IC 1782, is an unbarred lenticular galaxy in the constellation Fornax. It is estimated to be 194 million light-years from the Milky Way and has a diameter of approximately 100,000 light years. NGC 823 was discovered on October 14, 1830, by astronomer John Herschel.

<span class="mw-page-title-main">NGC 4359</span> Galaxy in the constellation Coma Berenices

NGC 4359 is a dwarf barred spiral galaxy seen edge-on that is about 56 million light-years away in the constellation Coma Berenices. It was discovered by astronomer William Herschel on March 20, 1787. It is a member of the NGC 4274 Group, which is part of the Coma I Group or Cloud.

<span class="mw-page-title-main">NGC 4393</span> Galaxy in the constellation of Coma Berenices

NGC 4393 is a spiral galaxy about 46 million light-years away in the constellation Coma Berenices. It was discovered by astronomer William Herschel on April 11, 1785. It is a member of the NGC 4274 Group, which is part of the Coma I Group or Cloud.

References

  1. 1 2 "NASA/IPAC Extragalactic Database - NGC 70". NED. NASA/IPAC. Retrieved 23 November 2014.
  2. 1 2 3 4 5 Seligman, Courtney. "New General Catalog Objects: NGC 50 - 99". cseligman.com. Retrieved 23 November 2014.
  3. ↑ Wright, Ned. "Ned Wright's Javascript Cosmology Calculator". www.astro.ucla.edu. UCLA . Retrieved 23 November 2014.
  4. 1 2 3 "NGC 70 >> Deep Sky Object Browser". Deep Sky Objects Browser. Archived from the original on 14 May 2014. Retrieved 23 November 2014.
  5. 1 2 "NGC 70". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 23 November 2014.
  6. ↑ "WIKISKY - NGC 70". wikisky. SKY-MAP.org. Retrieved 23 November 2014.
  7. 1 2 "NGC 70". Courtney Seligman. Retrieved 14 March 2015.
  8. ↑ Hickson, P.; Richstone, D.O.; Turner, E.L. (April 1977). "Galaxy collisions in dense groups". Astrophysical Journal. 213: 323–326. Bibcode:1977ApJ...213..323H. doi: 10.1086/155158 . Retrieved 17 November 2020.
  9. 1 2 Kormendy, John; Sargent, Wallace L. W. (1 October 1974). "Tidal Effects As Criteria for Membership In Small Groups of Galaxies: Application to VV166". Astrophysical Journal. 193: 19–25. Bibcode:1974ApJ...193...19K. doi: 10.1086/153122 . Retrieved 17 November 2020.


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