NGC 5775

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NGC 5775
NGC 5775.jpg
Hubble image of NGC 5775, taken using the Advanced Camera for Surveys
Observation data (J2000 epoch)
Right ascension 14h 53m 57.653s[1]
Declination+03° 32′ 40.10″[1]
Helio radial velocity1681[2]
Distance66.33 ± 13.31 Mly (20.338 ± 4.081 Mpc)[2]
Group or clusterVirgo Cluster
Apparent magnitude (V)11.34
Apparent magnitude (B)13.0
Apparent size (V)3.967' × 0.793'[1]
Other designations
UGC 9579, MCG+01-38-014, PGC 53247[3]
See also: Galaxy, List of galaxies

NGC 5775 is a spiral galaxy, a member of the Virgo Cluster, that lies at a distance of about 70 million light-years. Although the spiral is tilted away from us, with only a thin sliver in view, such a perspective can be advantageous for astronomers. For instance, astronomers have previously used the high inclination of this spiral to study the properties of the halo of hot gas[4] that is visible when the galaxy is observed at X-ray wavelengths.

Interaction with NGC 5774[edit]

NGC 5775 is interacting with the nearby galaxy NGC 5774 in the form of two connecting H I bridges through which the gas is travelling from NGC 5774 to NGC 5775.[5] Faint optical emission as well as radio continuum emission are also present along the bridges.[6] It is possible that star formation is occurring between the galaxies.[5]

This system may be in the early stages of a merger.[6]

External links[edit]


  1. ^ a b c Skrutskie, M. (2006). "The Two Micron All Sky Survey (2MASS)". The Astronomical Journal. 131 (2): 1163–1183. Bibcode:2006AJ....131.1163S. doi:10.1086/498708.
  2. ^ a b c "NED results for object NGC 5775". National Aeronautics and Space Administration / Infrared Processing and Analysis Center. Retrieved 4 February 2017.
  3. ^ a b "NGC 5775". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 4 February 2017.
  4. ^ Li, Jiang-Tao; Li, Zhiyuan; Wang, Q. Daniel; Irwin, Judith A.; Rossa, Joern (October 2008). "Chandra Observation of the Edge-on Spiral NGC 5775: Probing the Hot Galactic Disk/Halo Connection". Monthly Notices of the Royal Astronomical Society. 390 (1): 59–70. arXiv:0807.3587. Bibcode:2008MNRAS.390...59L. doi:10.1111/j.1365-2966.2008.13749.x.
  5. ^ a b Irwin, Judith; Caron, Bryan (2003). "The NGC 5775/4 Interacting System". In Shlosman, Isaac (ed.). Mass-Transfer Induced Activity in Galaxies. Cambridge University Press. p. 362.
  6. ^ a b Irwin, Judith A. (1994). "Arcs and bridges in the interacting galaxies NGC 5775/NGC 5774". The Astrophysical Journal. 429 (2): 618–633. Bibcode:1994ApJ...429..618I. doi:10.1086/174349.