Arp 7 (PGC 24836) is a spiral galaxy in the constellation Hydra.[1] Redshift-independent measurements of its distance vary widely, from 5.9 Mpc to 83.7 Mpc.[3] Its morphological classification is SB(rs)bc,[3] meaning it is a barred spiral galaxy with some ring-like structure.

Arp 7 was imaged by Halton Arp and included in his Atlas of Peculiar Galaxies under the category of 'split arm' galaxies.[4] Five other galaxies are also included in this section of the atlas: Arp 8 (NGC 497), Arp 9 (NGC 2523), Arp 10 (UGC 1775), Arp 11 (UGC 717), and Arp 12 (NGC 2608).

See also

References

  1. ^ a b Seligman, Courtney. "Celestial Atlas: PCG Objects 24500–4999". Retrieved 2015-11-25.
  2. ^ a b c Results for ARP 007. SIMBAD Astronomical Database. Retrieved 2015-11-25.
  3. ^ a b c d e f g h i "NASA/IPAC Extragalactic Database". Results for ARP 007. Archived from the original on 1997-12-22. Retrieved 2015-11-25.
  4. ^ Arp, Halton (1966). "Atlas of Peculiar Galaxies". Figure 1. Retrieved 2015-11-25.

Notes

  1. ^ Calculated from apparent size and distance:


Allikas: https://en.wikipedia.org/wiki/Arp_7
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