NGC 936

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NGC 936
Potw1009a.jpg
NGC 936 by the Very Large Telescope of ESO.
Observation data (J2000 epoch)
Constellation Cetus
Right ascension 02h 27m 37.4s [1]
Declination −01° 09′ 22″ [1]
Redshift 1430 ± 4 km/s [1]
Distance 67.7 ± 19.7 Mly (20.75 ± 6.05 Mpc) [1]
Apparent magnitude  (V)10.2
Characteristics
Type SB(rs)0+ [1]
Apparent size  (V)4′.7 × 4′.1 [1]
Other designations
UGC 1929, PGC 9359 [1]

NGC 936 is a barred lenticular galaxy in the constellation Cetus. It is at a distance of about 60 million light-years away from Earth. Its nucleus and prominent bar have high surface brightness. Because of the shape of the prominent bar, the nucleus and the ring of stars at the end of the barrel, the galaxy has been compared with the shape of a TIE fighter, from the Star Wars universe, and thus NGC 936 has been named Darth Vader’s Galaxy [2] or Darth Vader’s Starfighter. [3] By measuring the radial velocity of the disc, Kormendy found in 1986 that the disc is stable, which is the reason why it is so smooth. [4]

Contents

It was discovered by William Herschel on 6 January 1785, who classified it as a planetary nebula, because of its round shape. [3] One supernova (SN 2003gs) has been observed in NGC 936 and was typed as a peculiar Type Ia supernova, characterized by its fast evolution. [5] [6] SN 2003gs peaked at magnitude 14. [7]

NGC 936 forms a pair with the spiral galaxy NGC 941, at 12.6' separation, however, the two galaxies do not interact. [8] This galaxy group (the NGC 936 group) also includes the galaxies NGC 955, UGC 01945 and IC 225. The group is associated with Messier 77 group. [9]

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<span class="mw-page-title-main">NGC 4036</span> Galaxy in the constellation Ursa Major

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

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<span class="mw-page-title-main">NGC 4699</span> Spiral galaxy in the constellation Virgo

NGC 4699 is an intermediate spiral galaxy located in the constellation Virgo. It is located at a distance of about 65 million light years from Earth, which, given its apparent dimensions, means that NGC 4699 is about 85,000 light years across. It was discovered by William Herschel in 1786. It is a member of the NGC 4699 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.

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<span class="mw-page-title-main">NGC 2336</span> Galaxy in the constellation Camelopardalis

NGC 2336 is a barred spiral galaxy located in the constellation Camelopardalis. It is located at a distance of circa 100 million light years from Earth, which, given its apparent dimensions, means that NGC 2336 is about 200,000 light years across. It was discovered by Wilhelm Tempel in 1876.

<span class="mw-page-title-main">NGC 7606</span> Galaxy in the constellation Aquarius

NGC 7606 is a spiral galaxy located in the constellation Aquarius. It is located at a distance of circa 100 million light years from Earth, which, given its apparent dimensions, means that NGC 7606 is about 165,000 light years across. It was discovered by William Herschel on September 28, 1785. The galaxy is included in the Herschel 400 Catalogue. It lies 45 arcminutes northeast from psi2 Aquarii. It can be seen with a 4 inch telescope but its visibility is greatly affected by light pollution.

<span class="mw-page-title-main">NGC 7723</span> Galaxy in the constellation Aquarius

NGC 7723 is a barred spiral galaxy located in the constellation Aquarius. It is located at a distance of circa 90 million light years from Earth, which, given its apparent dimensions, means that NGC 7723 is about 95,000 light years across. It was discovered by William Herschel on November 27, 1785. The galaxy is included in the Herschel 400 Catalogue. It lies 1.5 degrees north-northwest from Omega1 Aquarii. It can be seen with a 4-inch telescope under dark skies.

<span class="mw-page-title-main">NGC 5468</span> Spiral galaxy in the constellation Virgo

NGC 5468 is an intermediate spiral galaxy located in the constellation Virgo. It is located at a distance of about 140 million light-years from Earth, which, given its apparent dimensions, means that NGC 5468 is about 110,000 light-years across. It was discovered by William Herschel on March 5, 1785.

<span class="mw-page-title-main">NGC 3367</span> Spiral galaxy in the constellation Leo

NGC 3367 is a barred spiral galaxy located in the constellation Leo. It is located at a distance of about 120 million light years from Earth, which, given its apparent dimensions, means that NGC 3367 is about 85,000 light years across. It was discovered by William Herschel on March 19, 1784.

<span class="mw-page-title-main">NGC 2525</span> Galaxy in the constellation Puppis

NGC 2525 is a barred spiral galaxy located in the constellation Puppis. It is located at a distance of about 70 million light years from Earth, which, given its apparent dimensions, means that NGC 2525 is about 60,000 light years across. It was discovered by William Herschel on February 23, 1791.

References

  1. 1 2 3 4 5 6 7 "NASA/IPAC Extragalactic Database". Results for NGC 936. Retrieved 2006-11-18.
  2. ↑ "Darth Vader's Galaxy, NGC 936". ESO . Retrieved 31 December 2015.
  3. 1 2 Stephen James O'Meara (2011). Deep-Sky Companions: The Secret Deep, vol. 4. Cambridge University Press. pp. 43–45. ISBN   978-1-139-50007-4.
  4. ↑ Ronald J. Buta; Harold G. Corwin; Stephen C. Odewahn (2007). Atlas of Galaxies. Cambridge University Press. p. 119. ISBN   978-0-521-82048-6.
  5. ↑ Kevin Krisciunas (December 2009). "The fast declining Type Ia supernova 2003gs, and evidence for a significant dispersion in near-infrared absolute magnitudes of fast decliners at maximum light". The Astronomical Journal. 138 (6): 1584–1596. arXiv: 0908.1918 . Bibcode:2009AJ....138.1584K. doi:10.1088/0004-6256/138/6/1584. S2CID   37022598.
  6. ↑ Dovi Poznanski; Ryan Chornock; Peter E. Nugent; Joshua S. Bloom; Alexei V. Filippenko; Mohan Ganeshalingam; Douglas C. Leonard; Weidong Li; Rollin C. Thomas (January 2010). "An Unusually Fast-Evolving Supernova". Science. 327 (5961): 58–60. arXiv: 0911.2699 . Bibcode:2010Sci...327...58P. doi:10.1126/science.1181709. PMID   19892941. S2CID   44804582.
  7. ↑ List of Supernovae IAU Central Bureau for Astronomical Telegrams. Retrieved 29 December 2015.
  8. ↑ Sandage, A., Bedke, J. (1994), The Carnegie Atlas of Galaxies. Volume I, Carnegie Institution of Washington
  9. ↑ Dmitry Makarov; Igor Karachentsev (2011). "Galaxy groups and clouds in the local (z∼ 0.01) Universe". MNRAS. 412 (4): 2498–2520. arXiv: 1011.6277 . Bibcode:2011MNRAS.412.2498M. doi: 10.1111/j.1365-2966.2010.18071.x . S2CID   119194025.


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