NGC 7049 is a lenticular galaxy[1] that spans about 150,000 light-years and lies about 100 million light-years away from Earth[2] in the inconspicuous southern constellation of Indus.

NGC 7049's unusual appearance is largely due to a prominent rope-like dust ring which stands out against the starlight behind it. These dust lanes are usually seen in young galaxies with active star-forming regions. NGC 7049 shows the features of both an elliptical galaxy and a spiral galaxy, and has relatively few globular clusters, indicative of its status as a lenticular type.[4][citation needed] NGC 7049 is the brightest (BCG) of the Indus triplet of galaxies (NGC 7029, NGC 7041, NGC 7049),[5] and its structure might have arisen from several recent galaxy collisions. Typical BCGs are some of the oldest and most massive galaxies.[6][dubious – discuss]

2MASS image of NGC 7049

References

  1. ^ a b c d e f "NASA/IPAC Extragalactic Database". Results for NGC 7049. Retrieved 2016-11-18.
  2. ^ a b c "Unusual Dusty Galaxy NGC 7049". Retrieved 18 November 2016.
  3. ^ "SIMBAD Astronomical Database". Results for NGC 7049. Retrieved 2016-11-16.
  4. ^ The Astronomical League
  5. ^ "NGC 7049, an unusual galaxy in Indus". Anne's Astronomy News (in Dutch). 2012-08-05. Retrieved 2017-06-09.
  6. ^ Nemiroff, R.; Bonnell, J., eds. (8 April 2009). "Unusual Dusty Galaxy NGC 7049". Astronomy Picture of the Day. NASA.


Allikas: https://en.wikipedia.org/wiki/NGC_7049
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