NGC 7070A

NGC 7070A
2MASS image of NGC 7070A.
Observation data (J2000 epoch)
ConstellationGrus
Right ascension21h 31m 47.3s [1]
Declination−42° 50′ 52″[1]
Redshift0.007976/2391 km/s[1]
Distance31.9 Mpc (104 Mly) (estimated)
Apparent magnitude (V)13.32[1]
Characteristics
TypeS0+pec[1]
Apparent size (V)1.9 x 1.5[1]
Notable featuresStrong dust lane
Other designations
ESO 287-34, AM 2128-34, MCG -7-44-21, PGC 66909[1]

NGC 7070A is a face-on lenticular galaxy located about 100 million light-years away[2] in the constellation of Grus.[3][4]

Physical characteristics

NGC 7070A has a companion, the spiral galaxy NGC 7070 which are separated from each other at a projected distance of about 640,000 ly (195 kpc).[2] It has dust lanes which cross it and incomplete shells surrounding it. Also, there are faint luminous tails extending from the galaxy towards NGC 7070. It is theorized that these features may have formed due to the accretion of a smaller disk galaxy about a billion years ago which got disrupted by NGC 7070A.[5]

Nearby galaxies

NGC 7070A is member of a group of galaxies known as the NGC 7079 Group.[6]

Active galactic nucleus

XMM-Newton observations of NGC 7070A show that the galaxy hosts moderate AGN activity.[2]

See also

References

  1. ^ a b c d e f g "NASA/IPAC Extragalactic Database". Results for NGC 7070A. Retrieved 2017-07-12.
  2. ^ a b c G. Trinchieri; R. Rampazzo; C. Chiosi; R. Grützbauch; A. Marino; R. Tantalo (2008-07-04). "XMM-Newton X-ray and Optical Monitor far UV observations of NGC 7070A and ESO 2400100 shell galaxies". Astronomy and Astrophysics. 489 (1): 85. arXiv:0807.0741. Bibcode:2008A&A...489...85T. doi:10.1051/0004-6361:200810024. S2CID 15868459.
  3. ^ "Your NED Search Results". ned.ipac.caltech.edu. Retrieved 2017-07-13.
  4. ^ "New General Catalog Objects: NGC 7050 - 7099". cseligman.com. Retrieved 2017-07-01.
  5. ^ Brosch, N; Mayo Greenberg, J.; Grosbol, P. J (25 September 1984). "Extragalactic dust. I - NGC 7070A". Astronomy and Astrophysics. 143: 399–407. Bibcode:1985A&A...143..399B.
  6. ^ Fouque, P.; Proust, D.; Quintana, H.; Ramirez, A. (30 September 1993). "Dynamics of the Pavo-Indus and Grus clouds of galaxies" (PDF). Astronomy and Astrophysics Supplement Series. 100: 493–500. Bibcode:1993A&AS..100..493F.


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