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 ascension 14h 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 746, 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.
  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.
  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.


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