NGC 5774

NGC 5774 is an intermediate spiral galaxy approximately 71 million light-years away from Earth in the constellation of Virgo.[1] It was discovered by Irish engineer Bindon Stoney on April 26, 1851.[3]

NGC 5774
NGC 5774 (NASA/ESA HST)
Observation data (J2000.0 epoch)
ConstellationVirgo
Right ascension 14h 53m 42.46s [1]
Declination+03° 34′ 56.96″ [1]
Redshift0.005187 [1]
Helio radial velocity1555 ± 2 km/s [1]
Distance71 Mly [1]
Apparent magnitude (V)12.30 [2]
Apparent magnitude (B)13.00 [2]
Characteristics
TypeSAB(rs)d [1]
Apparent size (V)1.9 x 1.12 [1]
Other designations
PGC 53231, MCG 1-38-13, UGC 9576

NGC 5774 belongs to a small group of galaxies, together with nearby NGC 5775 and IC 1070.[4] It has been classified as a "low surface brightness" (LSB) galaxy, but its central surface brightness is 5 times brighter than the brightest LSB galaxies.[4][5] It has a multiple spiral pattern with bright blue knotty structure all along the arms.[6]

It is an extremely low star forming galaxy with five X-ray sources plus three ultraluminous X-ray source candidates.[7]

Interaction with NGC 5775

NGC 5774 is interacting with the nearby spiral galaxy NGC 5775 in the form of two connecting H I bridges through which the gas is travelling from NGC 5774 to NGC 5775.[4] Faint optical emission, as well as radio continuum emission, are also present along the bridges.[5] It is possible that star formation is occurring between the galaxies.[4]

This system may be in the early stages of a merger.[5]

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See also

References
  1. "NASA/IPAC Extragalactic Database". ned.ipac.caltech.edu. Retrieved December 5, 2017.
  2. "Revised NGC Data for NGC 5774". spider.seds.org. Retrieved December 9, 2017.
  3. "Data for NGC 5774". www.astronomy-mall.com. Retrieved December 9, 2017.
  4. Irwin, Judith; Caron, Bryan (200). "The NGC 5775/4 Interacting System". In Shlosman, Isaac (ed.). Mass-Transfer Induced Activity in Galaxies. Cambridge University Press. p. 362. ISBN 978-0-521-54330-9.
  5. 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.
  6. "NASA/IPAC Extragalactic Database - Notes for object NGC 5774". ned.ipac.caltech.edu. Retrieved December 5, 2017.
  7. Ghosh, Kajal K.; et al. (2009). "Multiwavelength study of the bright X-ray source population in the interacting galaxies NGC 5774/NGC 5775". The Astronomical Journal. 137 (2): 3263–3285. arXiv:0810.5393. Bibcode:2002ApJ...566..667R. doi:10.1088/0004-6256/137/2/3263.


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