Difference between revisions of "Triggers:Other"

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(NGC300-OT)
(NGC300-OT)
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* intermediate between CN and SN
 
* intermediate between CN and SN
 
* suspected to be a twin with SN 2008S (progenitor: luminous star embedded in circumstellar dust)
 
* suspected to be a twin with SN 2008S (progenitor: luminous star embedded in circumstellar dust)
 +
* probably an explosion of masive (6-10 Msun) carbon-rich AGB/super-AGB or post-AGB star
  
 
[[File:NGC300-OT-lightcurve.png]]
 
[[File:NGC300-OT-lightcurve.png]]
 +
 +
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Revision as of 15:11, 3 July 2009

NGC300-OT

Luminous optical transient was detected in May 2008 in NGC300 by an amateur astronomer B.Monard from South Africa.

Discovery paper by Bond et al. (2008).

Spitzer/IRS mid-IR spectrum taken 93 days after the maximum (Prieto et al. 2009)


  • maximum absolute brightness: <math>M_V \simeq -12 to -13</math>
  • detected at brightness <math>V\approx14.5 \textrm{mag}</math>
  • decay to 20 mag in about 100 days
  • intermediate between CN and SN
  • suspected to be a twin with SN 2008S (progenitor: luminous star embedded in circumstellar dust)
  • probably an explosion of masive (6-10 Msun) carbon-rich AGB/super-AGB or post-AGB star

NGC300-OT-lightcurve.png