The NGC 672 and 784 galaxy groups: evidence for galaxy formation and growth along a nearby dark matter filament

  title={The NGC 672 and 784 galaxy groups: evidence for galaxy formation and growth along a nearby dark matter filament},
  author={Adi Zitrin and Noah Brosch},
  journal={Monthly Notices of the Royal Astronomical Society},
  • A. Zitrin, N. Brosch
  • Published 13 August 2008
  • Physics
  • Monthly Notices of the Royal Astronomical Society
We present U, B, V, R, I, Hα and NUV photometry of 14 galaxies in the very local Universe (within 10 Mpc). Most objects are dwarf irregular galaxies (dIrr) and are probably associated with the NGC 672/IC 1727 and NGC 784 galaxy groups. The galaxies are at low redshift (51 ≤ v⊙≤ 610 km s−1) and most appear projected on the sky as a 6° long linear filament. We show that the galaxy positions along this filament correlate with their radial velocity, hinting to an interpretation as a single… 

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