Difference between revisions of "Triggers:Other"
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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]] | ||
| + | |||
| + | ---- | ||
Revision as of 14:11, 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
