Arp_104

Arp 104

Arp 104

Pair of galaxies in the constellation of Ursa Major

Arp 104, also known as Keenan's system, is entry 104 in Halton Arp's Atlas of Peculiar Galaxies catalog for spiral galaxy NGC 5216 and globular galaxy NGC 5218.[2] The two galaxies are joined by a bridge of galactic material spanning 22 000 light years.[2][3]

Quick Facts Constellation, Right ascension ...

In 1790 William Herschel discovered the galaxies, and in 1926 they were studied by Edwin Hubble.[2] In 1935 Philip C. Keenan first published a paper about the bridge connecting the galaxies,[2][10] which was rediscovered in 1958 at the Lick and Palomar observatories.[2][3][11]

References

  1. [1]
    "Searching NED for object "ARP 104*"". NASA/IPAC Extragalactic Database (NED). Jet Propulsion Laboratory, California Institute of Technology. Retrieved 2008-08-02.
  2. [2]
    Plotner, Tammy (2008-07-25). "Bridge Across Space: "Keenan's System" by Martin Winder and Dietmar Hager". Universe Today. Archived from the original on 2008-07-30. Retrieved 2008-08-02.
  3. [3]
    Zwicky, Fritz (1956). "Multiple galaxies". Ergebnisse der Exakten Naturwissenschaften. Vol. 29. p. 361. Bibcode:1956ErNW...29..344Z. doi:10.1007/BFb0118841. ISBN 978-3-540-74717-8.
  4. [4]
    "NGC 5216". The interactive NGC catalog online. Students for the Exploration and Development of Space (SEDS). Archived from the original on 2012-12-28. Retrieved 2008-08-03.
  5. [5]
    "NGC 5218". The interactive NGC catalog online. Students for the Exploration and Development of Space (SEDS). Archived from the original on 2012-12-21. Retrieved 2008-08-03.
  6. [6]
    Roche, Nathan (2006-04-29). "Imaging and spectroscopy of Arp 104: a post-starburst interacting pair with cross-fuelling?". arXiv:astro-ph/0605015.
  7. [7]
    Bushouse, Howard A.; Steven D. Lord; Susan A. Lamb; Michael W. Werner; K. Y. Lo (1999-11-10). "The molecular gas-star formation connection in an optically-selected sample of interacting galaxies". arXiv:astro-ph/9911186.
  8. [8]
    "VV 33a -- Interacting Galaxies". SIMBAD astronomical object database. Centre de Données astronomiques de Strasbourg. Retrieved 2009-01-14.
  9. [9]
    "NGC 5218 -- Galaxy in Pair of Galaxies". SIMBAD astronomical object database. Centre de Données astronomiques de Strasbourg. Retrieved 2009-01-14.
  10. [10]
    Keenan, Philip C. (May 1935). "An unusual pair of nebulae: NGC 5216 and 5218". Astrophysical Journal. 81: 355. Bibcode:1935ApJ....81..355K. doi:10.1086/143641.
  11. [11]
    Vorontsov-Vel'Iaminov, B. A. (1958). "The interaction of galaxies and the nature of their arms, spanning filaments and tails. The morphology of galaxies. V". Astronomicheskii Zhurnal. 35: 858. Bibcode:1958AZh....35..858V.


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