Transcient ASASSN-14cl

Information about outbursts of eruptive stars, Be activity, ...
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Francois Teyssier
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Transcient ASASSN-14cl

Post by Francois Teyssier »

Detection of a bright transcient (mag 10.7) ASASSN-14cl

AD 21 54 57.6
DE 26 41 16

ATel 6233
http://www.astronomerstelegram.org/?read=6233

Perhaps a CV outburst

François
Francois Teyssier
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Re: Transcient ASASSN-14cl

Post by Francois Teyssier »

Field of view
asassn-14cl.PNG
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François
Francois Teyssier
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Re: Transcient ASASSN-14cl

Post by Francois Teyssier »

CV in outburst, with noticely He II in emission
Line at 6926 is a cosme, not removed
_asassn-14cl_20140615_000_fteyssier.png
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François
Christian Buil
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Re: Transcient ASASSN-14cl

Post by Christian Buil »

Excellent reactivity! A rare event at this magnitude
(for me, permament bad weather on Toulouse :( )

Christian
Francois Teyssier
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Re: Transcient ASASSN-14cl

Post by Francois Teyssier »

Thank you Christian

Here's the ATel reporting the identification
http://www.astronomerstelegram.org/?read=6235

François
Paolo Berardi
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Re: Transcient ASASSN-14cl

Post by Paolo Berardi »

Fantastic, congratulations François!
Italy is under storms, weather forecasts say for another week... :(

Paolo
Tim Lester
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Re: Transcient ASASSN-14cl

Post by Tim Lester »

Congratulations François!

I was able to get a spectrum through high altitude haze on June 16th (calibrated using HD208906 and the Miles spectrum).
Don't seem to be picking up the He II emission... :?:

Image

Tim
Francois Teyssier
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Re: Transcient ASASSN-14cl

Post by Francois Teyssier »

Thank you Paolo and Tim.
The changes in spectra of DN in outburst are very fast.
See for instance SS Cyg : http://www.astronomie-amateur.fr/feuill ... 20Cyg.html
However I'll verify my images.
Could you send me your spectrum for the database, Tim?
All the best
François
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