NGC 7007

NGC 7007 is a lenticular galaxy[2] around 130 million light-years away from Earth in the constellation Indus.[3][2] NGC 7007 was discovered by astronomer John Herschel on July 8, 1834.[4]

NGC 7007
Lenticular galaxy NGC 7007.
Observation data (J2000 epoch)
ConstellationIndus
Right ascension21h 05m 27.9s[1]
Declination−52° 33′ 07″[1]
Redshift0.010334[1]
Heliocentric radial velocity3098 km/s[1]
Distance131,132,400 Mly
Apparent magnitude (V)12.94[1]
Characteristics
TypeSA0[1]
Apparent size (V)1.9 × 1.1[1]
Other designations
ESO 187-48, PGC 66069[1]

Counter-rotating disk

In NGC 7007, there is counter-rotating disk of ionized gas that counter-rotates with respect to the stars. This indicates an external origin of the gas such as accretion.[5]

See also

References
  1. "NASA/IPAC Extragalactic Database". Results for NGC 7007. Retrieved 2017-04-23.
  2. "Your NED Search Results". ned.ipac.caltech.edu. Retrieved 2017-04-23.
  3. Rojas, Sebastián García. "Galaxy NGC 7007 Deep Sky Objects Browser". DSO Browser. Retrieved 2017-04-23.
  4. "New General Catalog Objects: NGC 7000 - 7049". cseligman.com. Retrieved 2017-04-15.
  5. Dettmar, Ralf-Juergen; Jullien-Dettmar, Marlies; Barteldrees, Andreas (1 July 1990). "Observations of extended and counterrotating disks of ionized gas in SO galaxies*" (PDF). Nasa, Ames Research Center, the Interstellar Medium in External Galaxies: Summaries of Contributed Papers.
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