NGC 5746

NGC 5746
NGC 5746 by the Liverpool Telescope
Observation data (J2000 epoch)
Constellation	Virgo
Right ascension	14h 44m 55.9s[1]
Declination	+01° 57′ 18″[1]
Redshift	1724 ± 10 km/s[1]
Distance	99 Mly[2]
Apparent magnitude (V)	11.0[1]
Characteristics
Type	SB(r)bc[3]
Apparent size (V)	7.4′ × 1′.[1]
Other designations
UGC 9499,[1] PGC 52665[1]

NGC 5746 (also known as the Mini Sombrero Galaxy^[4][5]) is a barred spiral galaxy located in the eastern part of the constellation of Virgo. It is a member of the NGC 5746 Group of galaxies, itself one of the Virgo III Groups strung out to the east of the Virgo Supercluster of galaxies.^[6]

Characteristics

NGC 5746 is located at a distance of 99 million light years^[7] and is seen nearly edge-on, bearing a strong resemblance with the galaxy NGC 4565, that is also seen nearly edge-on.

As with the former, it has a box-shaped bulge that is actually a bar seen from one side^[7] and a currently modest star formation activity.^[8]

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;^[9] however, later research has shown that cloud does not actually exist.^[10]

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]

One supernova has been observed in NGC 5746: SN 1983P (type Ia, mag. 13).^[11]

References

External links

• Media related to NGC 5746 at Wikimedia Commons