Astronomy:NGC 6861
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Short description: Lenticular galaxy in the constellation Telescopium
| NGC 6861 | |
|---|---|
 NGC 6861 | |
| Observation data (J2000 epoch) | |
| Constellation | Telescopium[1] |
| Right ascension | 20h 07m 19.48s[2] |
| Declination | −48° 22′ 12.8″[2] |
| Redshift | 0.009437[2] |
| Apparent magnitude (V) | 11.0[1] |
| Characteristics | |
| Type | SA0^-(s):[2] |
| Apparent size (V) | 3′ × 2′[1] |
| Other designations | |
| IC 4949[1] | |
NGC 6861 is a lenticular galaxy located in the constellation Telescopium. It is the second-brightest object in the constellation. Unlike most lenticular galaxies, which tend to be mostly devoid of both gas and dust, NGC 6861 exhibits a thick obscuring ring of dust around the nucleus where star formation is occurring. The galaxy was discovered by Scottish astronomer James Dunlop, in 1826.[3] NGC 6861 is interacting with NGC 6868, and it is predicted that they will eventually merge.[4]
References
- ↑ 1.0 1.1 1.2 1.3 "NGC 6861". http://dso-browser.com/dso/info/NGC/6861.
- ↑ 2.0 2.1 2.2 2.3 "NED results for object NGC 6861". http://ned.ipac.caltech.edu/cgi-bin/objsearch?objname=NGC+6861&extend=no&hconst=73&omegam=0.27&omegav=0.73&corr_z=1&out_csys=Equatorial&out_equinox=J2000.0&obj_sort=RA+or+Longitude&of=pre_text&zv_breaker=30000.0&list_limit=5&img_stamp=YES.
- ↑ "Hubble Views 'Third Kind' of Galaxy". http://www.nasa.gov/content/goddard/hubble-views-third-kind-of-galaxy/#.VMxBBC6gslQ.
- ↑ Machacek, M. E.; O'Sullivan, E.; Randall, S. W.; Jones, C.; Forman, W. R. (2010). "The Mysterious Merger of NGC 6868 and NGC 6861 in the Telescopium Group". The Astrophysical Journal 711 (2): 1316–1332. doi:10.1088/0004-637X/711/2/1316. Bibcode: 2010ApJ...711.1316M. http://iopscience.iop.org/0004-637X/711/2/1316/article. Retrieved 31 January 2015.
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