[AAVSO-DIS] Spectra of V407 Cyg

Kirill Sokolovsky ksokolov at mpifr-bonn.mpg.de
Thu Mar 18 18:57:50 EDT 2010


Dear Matthew and everyone,

I would like to call your attention to ATel #2487
( http://www.astronomerstelegram.org/?read=2487 )
which reports Fermi/LAT detection of a gamma-ray flare probably 
associated with the recent outburst of V407 Cyg.

If confirmed, this would be the first detection of a symbiotic binary in gamma-rays!

Dense photometric monitoring of V407 Cyg is crucial for understanding 
what is so special about this system and this particular flare.
So, as Matthew put it - please keep watching! :)

With best wishes,
Kirill (SKA)



On Wed, 17 Mar 2010, Matthew Templeton wrote:

> Hello everyone,
>
> I saw a post by Christian Buil over on VSNET with a link to his spectra of 
> V407 Cygni (Alert Notice 419).  The spectra show both broad and narrow lines 
> suggestive of both the nova expansion (broad lines) and the dense 
> circumstellar environment (narrow lines).  Buil also notes the comparison to 
> spectra of RS Oph (which are also linked on the page).  His webpage is
> here: http://astrosurf.com/buil/v407cyg/obs.htm
>
> V407 Cyg is a fascinating object, and we'll certainly be hearing more about 
> it as this event progresses.  Please keep watching!
>
> Clear skies,
>
> 	Matthew
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