Difference between revisions of "Triggers:Other"
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[[File:SakuraisObjectCMDLMC.png|300px]] Figure from [http://arxiv.org/abs/0907.4090 Spano et al. 2009]. | [[File:SakuraisObjectCMDLMC.png|300px]] Figure from [http://arxiv.org/abs/0907.4090 Spano et al. 2009]. | ||
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| + | == Luminous Red Novae == | ||
| + | New type of novae, introduced in 2007 with detection of M85OT2006-1 transient [http://arxiv.org/abs/astro-ph/0612161 Rau et al. 2006]. Class contains also M31 RV, V4322 Sgr and V838 Mon. | ||
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| + | See also [http://arxiv.org/abs/0903.0218 Kulkarni et al.2009]. | ||
Revision as of 17:11, 28 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
Sakurai's Object
V4334 Sgr and similar FG Sge...
Figure from Spano et al. 2009.
Luminous Red Novae
New type of novae, introduced in 2007 with detection of M85OT2006-1 transient Rau et al. 2006. Class contains also M31 RV, V4322 Sgr and V838 Mon.
See also Kulkarni et al.2009.
