Zwicky's Triplet

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Zwicky's Triplet
Arp103 - SDSS DR14.jpg
Observation data (Epoch )
Constellation(s) Hercules
Right ascension 16h 49m 28.3s [1]
Declination +45° 27′ 40″ [1]
Brightest memberPGC 59061

Zwicky's Triplet (Arp 103 [2] ) is a group of three galaxies visible in the constellation Hercules. [3] [4] None of the galaxies is listed in the New General Catalogue (NGC) or Index Catalogue (IC), but all three are identified in the Catalogue of Principal Galaxies (PGC) published in 1989.

Contents

Arp 103’s brightest member is PGC 59061, at magnitude 15. Overlapping it on its southwestern flank is PGC 59062, which is smaller and fainter. Two arcminutes to the north of this pair is PGC 59065, a lenticular galaxy of magnitude 16. A faintly luminous tidal arm of intergalactic matter stretches between PGC 59061 and PGC 59065. [5]

The other Zwicky's Triplet

IC 3481 at 12h 32m, +11° 24' (2000.0) in Virgo, which is connected to PGC 41646 ("IC 3481A") as the system Arp 175, but probably not connected to IC 3483, is sometimes called Zwicky's Triplet, but this name is more often applied to the system at 16h 49m, +45° 30' (2000.0) in Hercules. [6] [7]

See also

References

  1. 1 2 Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics . 616. A1. arXiv: 1804.09365 . Bibcode: 2018A&A...616A...1G . doi: 10.1051/0004-6361/201833051 . Gaia DR2 record for this source at VizieR.
  2. ↑ SKY CATALOGUE 2000.0, Volume 2: Double Stars, Variable Stars and Nonstellar Objects (edited by Alan Hirshfeld and Roger W. Sinnott, 1985), page l
  3. ↑ Steinicke, Wolfgang; Jakiel, Richard (January 4, 2007). Galaxies and How to Observe Them . Springer Science & Business Media. p.  194. ISBN   978-1-84628-699-5.
  4. ↑ Zombeck, Martin V. (November 9, 2006). Handbook of Space Astronomy and Astrophysics. Cambridge University Press. p. 125. ISBN   978-1-139-45950-1.
  5. ↑ Phil Harrington, "Zwicky's Triplet", Astronomy (1 January 2024) https://www.astronomy.com/science/zwickys-triplet/
  6. ↑ SKY CATALOGUE 2000.0, Volume 2: Double Stars, Variable Stars and Nonstellar Objects (edited by Alan Hirshfeld and Roger W. Sinnott, 1985), page 362
  7. ↑ Courtney Seligman, IC 3481
  8. "Zwicky's Triplet". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 2020-01-08.
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