[vsnet-alert 14872] Re: nova Mon 2012

[François Teyssier]

Dear Kirill Sokolovsky,

Amateurs of Astronomical Ring for Access to Spectroscopy got high and 
low resolution spectra from 2012-08-14

The results are gathered in an Aras Web Page 
http://www.astrosurf.com/aras/novae/Nova2012Mon.html
Log of observations dans fits download : 
http://www.astrosurf.com/aras/novae/TableauSpectres.htm

Contact for Aras Nova Mon 2012 campaign : francois.teyssier [at] dbmail.com

Best regards

François Teyssier



Le 21/08/2012 03:50, Seiichiro Kiyota a écrit :
> Dear Kirill Sokolovsky,
>
>
> Thank you for your information about Atel 4282.
> Maximum (or bigining of outburst?) should be around Jun 22 that 
> detected it in gamma-ray.
>
>
> I also interested in optical observations around maximum.
> This nova could be seen near horizon in twlilight sky on Jun 22 at 
> hight latutude area of southern hemisphere (New Zealand?).
>
>
>
>                                             Seiichiro Kiyota
>                                             VSOLJ, Japan
>
>
> (2012/08/20 19:41), Kirill Sokolovsky wrote:
>> Dear everyone,
>>
>> let me also draw your attention to the fact, that Nova Mon 2012 is 
>> likely the third classical nova detected in GeV gamma-rays (ATel 
>> #4310; http://www.astronomerstelegram.org/?read=4310 ) the other two
>> being Nova Sco 2012 (ATel #4284; 
>> http://www.astronomerstelegram.org/?read=4284 )
>> and V407 Cyg in 2010 (Abdo et al. 2010 Science, 329, 817 ; 
>> http://arxiv.org/abs/1008.3912 ).
>>
>> The gamma-ray emission of classical novae is new and very interesting 
>> field of investigation. The big question: why do we see some 
>> classical novae in gamma-rays but not other, apparently similar,
>> novae is open.
>> After the 2010 V407 Cyg event, there was the assumption that 
>> gamma-ray emission may be generated, if nova erupts in a symbiotic 
>> binary system, through the interaction of the nova shell with the red
>> giant wind.
>> But the recent identifications of Nova Mon 2012 and Nova Sco 2012 
>> (that do not seem to be symbiotic systems) with gamma-ray transients 
>> seems to defy this assumption.
>>
>> It would be great if someone could determine or at least constrain 
>> Nova Mon 2012 explosion date with optical satellite observations. 
>> Also both
>> Nova Mon 2012 and Nova Sco 2012 deserve detailed photometric and 
>> spectroscopic investigation.
>>
>> With best wishes,
>> Kirill Sokolovsky
>
>


-- 
François Teyssier
www.astronomie-amateur.fr