NGC 6984

NGC 6984 is a barred spiral galaxy located 180 million light years away in the constellation Indus.

NGC 6984
NGC 6984 taken by the Hubble Space Telescope
Observation data (J2000 epoch)
ConstellationIndus
Right ascension 20h 57m 53.987s[1]
Declination−51° 52′ 15.13″[1]
Redshift0.015386[1]
Helio radial velocity4577 km/s[1]
Distance180 million ly[2]
Apparent magnitude (V)12.65[1]
Apparent magnitude (B)13.19[1]
Characteristics
Apparent size (V)1.403 x 1.038 arcmin[1]
Other designations
ESO-LV 235-0200, 2MASX J20575398-5152151, [CHM2007] LDC 1431 J205753.98-5152151, AM 2054-520, IRAS 20543-5203, PSCz Q20543-5203 [SLK2004] 1671, APMBGC 235+046+104, IRAS F20543-5203, QDOT B2054196-520349, 6dFGS gJ205754.0-515215, ISOSS J20578-5152, SGC 205419-5203.8, ESO 235-20, LEDA 65798, [CHM2007] HDC 1131 J205753.98-5152151

It is known for having been the host of two recent supernovae: one in 2012 first known as SNhunt142[3] (later designated SN 2012im[4]), and one in 2013 known as SN 2013ek. The first was a Type Ic[5] and the second was a Type Ib/c.[6] HST observations were initiated by Dr. Dan Milisavljevic.[7] NASA's press release about SN 2013ek said:

"It is so close to where SN 2012im was spotted that the two events are thought to be linked; the chance of two completely independent supernovae so close together and of the same class exploding within one year of one another is a very unlikely event. It was initially suggested that SN 2013ek may in fact be SN 2012im flaring up again, but further observations support the idea that they are separate supernovae — although they may be closely related in some as-yet-unknown way."[8]

References
  1. "Search Results for NGC 6984". Astronomical Database. SIMBAD. Retrieved 5 November 2013.
  2. "Stellar explosions in NGC 6984". ESA/Hubble Picture of the Week. Retrieved 5 November 2013.
  3. http://www.astronomerstelegram.org/?read=4300
  4. http://www.cbat.eps.harvard.edu/iau/cbet/003600/CBET003607.txt
  5. http://www.astronomerstelegram.org/?read=5225
  6. http://www.astronomerstelegram.org/?read=5227
  7. http://www.stsci.edu/cgi-bin/get-proposal-info?id=13505&observatory=HST
  8. Hubble Catches Stellar Explosions in NGC 6984, NASA, 13 November 2013, archived from the original on 21 November 2013
  • Media related to NGC 6984 at Wikimedia Commons


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