NGC 5746

NGC 5746 is a barred spiral galaxy located in the eastern part of the constellation of Virgo.

NGC 5746
NGC 5746 by the Liverpool Telescope
Observation data (J2000 epoch)
ConstellationVirgo
Right ascension14h 44m 55.9s[1]
Declination+01° 57′ 18″[1]
Redshift1724 ± 10 km/s[1]
Distance95 Mly[2]
Apparent magnitude (V)11.0[1]
Characteristics
TypeSB(r)bc[3]
Apparent size (V)7′.4 × 1′.[1]
Other designations
UGC 9499,[1] PGC 52665[1]

Characteristics

NGC 5746 is located at a distance of 95 million light years[2] and is seen nearly edge-on, bearing a strong resemblance with the galaxy NGC 4565, that is also seen nearly edge-on.

Galaxy NGC 5746, by HST.

As with the former, it has a box-shaped bulge that is actually a bar seen from one side[2] and a currently modest star formation activity.[4]

Investigations with the help of the x-ray space telescope Chandra seemed to detect a large cloud of gas surrounding NGC 5746 that was thought to be remnant gas of its formation in the process of being accreted;[5] however, later research has shown that cloud does not actually exist.[6]

Seen in the infrared, NGC 5746 also shows two pseudobulges, one nested within the other – that coincides with its central bar – as well as an inner ring with a radius of 9.1 kiloparsecs and a width of 1.6 kiloparsecs.[3]

References
  1. "NASA/IPAC Extragalactic Database". Results for NGC 5746. Retrieved 2013-02-21.
  2. "Best of AOP: NGC 5746". NOAO. Retrieved 2013-02-21.
  3. Barentine, J. C.; Kormendy, J. (August 2012). "Two Pseudobulges in the "Boxy Bulge" Galaxy NGC 5746". The Astrophysical Journal. 754 (2, article id 140): 140. arXiv:1205.6876. Bibcode:2012ApJ...754..140B. doi:10.1088/0004-637X/754/2/140. S2CID 119298870.
  4. Rasmussen, J.; Sommer-Larsen, J.; Pedersen, K.; Toft, S.; et al. (October 2006). "Investigating hot gas in the halos of two massive spirals: Observations and cosmological simulations". arXiv:astro-ph/0610893. Bibcode:2006astro.ph.10893R. Cite journal requires |journal= (help)
  5. Pedersen, K.; Sommer-Larsen, J.; Rasmussen, J.; Toft, S.; et al. (May 2006). "Discovery of a very extended X-ray halo around a quiescent spiral galaxy The "missing link" of galaxy formation". New Astronomy. 11 (7): 465–470. arXiv:astro-ph/0511682. Bibcode:2006NewA...11..465P. doi:10.1016/j.newast.2005.11.004. S2CID 53473787.
  6. Pedersen, K.; Sommer-Larsen, J.; Rasmussen, J.; Toft, S.; et al. (2009). "Hot Gas Halos Around Disk Galaxies: Confronting Cosmological Simulations with Observations". The Astrophysical Journal. 697 (1): 79–93. arXiv:0903.0665. Bibcode:2009ApJ...697...79R. doi:10.1088/0004-637x/697/1/79. S2CID 17934428.
  • Media related to NGC 5746 at Wikimedia Commons


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