NGC 6744

NGC 6744 (also known as Caldwell 101) is an intermediate spiral galaxy about 30 million light-years away[2] in the constellation Pavo. It is considered as a Milky Way mimic in our immediate vicinity, displaying flocculent (fluffy) arms and an elongated core. It also has at least one distorted companion galaxy (NGC 6744A) superficially similar to one of the Magellanic Clouds.[3] It was discovered from Parramatta in Australia by Scottish astronomer James Dunlop on 30 June 1826.[4]

NGC 6744
Wide Field Imager view of a Milky Way look-alike NGC 6744. Credit: ESO
Observation data (J2000 epoch)
Constellation	Pavo
Right ascension	19^h 09^m 46.1^s[1]
Declination	−63° 51′ 27″[1]
Redshift	0.002805[1]
Helio radial velocity	841 ± 2 km/s[1]
Distance	31 ± 5.2 Mly (9.5 ± 1.6 Mpc)[2]
Apparent magnitude (V)	9.14[1]
Characteristics
Type	SAB(r)bc[1] II
Apparent size (V)	20′.0 × 12′.9[1]
Other designations
Caldwell 101, PGC 62836

NGC 6744 lies within the Virgo Supercluster.[5][6]

Gallery

• 
  NGC 6744 resembles the Milky Way, though it is somewhat larger (HST)[7]
• 
  Glowing spiral arms of NGC 6744 (HST)[8]
• 
  Spiral Galaxy NGC 6744 as seen at SALT
• 
  NGC 6744 by GALEX
• 
  Spiral galaxy NGC 6744; same HST image as the two previous
• 
  NGC 6744 as images by ESO-VLT. Unrelated objects have been edited out.

See also

• NGC 2336 - another spiral galaxy of similar size and shape
• NGC 1232
• SPT0418-47 - a spiral galaxy of similar size and shape when universe was 1.4 billion years old
• UGC 12158

References

1. "NASA/IPAC Extragalactic Database". Results for NGC 6744. Retrieved 2006-08-31.
2. "Distance Results for NGC 6744". NASA/IPAC Extragalactic Database. Retrieved 2010-06-19.
3. "NASA/IPAC Extragalactic Database". Results for NGC 6744A. Retrieved 2010-06-19.
4. Seligman, Courtney. "NGC Objects: NGC 6700 - 6749". cseligman.com. Retrieved 14 February 2019.
5. P. Fouque; E. Gourgoulhon; P. Chamaraux; G. Paturel (1992). "Groups of galaxies within 80 Mpc. II - The catalogue of groups and group members". Astronomy and Astrophysics Supplement. 93: 211–233. Bibcode:1992A&AS...93..211F.
6. "Nearby Groups of Galaxies". ned.ipac.caltech.edu. Retrieved 2018-05-04.
7. "The Milky Way's big sister". www.spacetelescope.org. Retrieved 24 July 2018.
8. "Hubble shows the local Universe in ultraviolet". www.spacetelescope.org. Retrieved 18 May 2018.

External links

• NGC 6744 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
• NGC 6744, a Milky Way-like spiral galaxy
• NGC 6744 (Pav)
• June 4, 2010 – A Sibling of the Milky Way (Wise image of NGC 6744)
• A spiral galaxy that resembles our Milky Way (1 June 2011)
• Merrifield, Michael. "NGC 6744 The Milky Way's Twin". Sixty Symbols. Brady Haran for the University of Nottingham.
• NASA Astronomy Picture of the Day: NGC 6744 Close Up (May 31, 2018)