NGC 7049

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
NGC 7049 - image from the Hubble Space Telescope's Advanced Camera for Surveys
Observation data (J2000 epoch)
ConstellationIndus
Right ascension21h 19m 00.25s[1]
Declination−48° 33′ 43.24″[1]
Redshift2285 km/s[1]
Distance100 Mly[2]
Apparent magnitude (V)10.7[1]
Characteristics
TypeS0
Size~150,000 ly[2]
Other designations
ESO 236-1,[3] PGC 66549[1]

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] 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]

2MASS image of NGC 7049

References
  1. "NASA/IPAC Extragalactic Database". Results for NGC 7049. Retrieved 2016-11-18.
  2. "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.


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