SS Cygni in outburst

Information about outbursts of eruptive stars, Be activity, ...
Joan Guarro Flo
Posts: 620
Joined: Thu Nov 03, 2011 8:50 pm

Re: SS Cygni in outburst

Post by Joan Guarro Flo »

Ciao Umberto, Hi Vincent :

It's a good job !! What is the star that you use for reference?

Un forte abbraccio, Joan.
umberto sollecchia
Posts: 242
Joined: Tue Dec 30, 2014 3:25 pm

Re: SS Cygni in outburst

Post by umberto sollecchia »

Bonjour à tous.
Ciao Joan, pour référence j'utilisé l'étoile HD 192640. Il est miles 'une variable, mais à ce moment est très stable.
Je fis une nouvelle réduction des données , pour tous les commentaires que j'ai posté, en utilisant comme référence un autres miles et précisément HD 214994, mais tous les profil ils sont identiques.
Placez le profil spectral de la observation de lanuit dernière et la comparaison avec le jour 02/07/2016
Même ce processus, je l'ai fait avec HD 192640 et HD 214994 miles.
Même ce sprint continu a la même tendance.
Un fuerte abrazo.
Umberto
Profilo sscyg.png
Profilo sscyg.png (6.31 KiB) Viewed 7342 times
Comparazione.png
Comparazione.png (7.81 KiB) Viewed 7342 times
salutations à tous.
Umberto
Last edited by umberto sollecchia on Tue Jul 05, 2016 9:44 am, edited 1 time in total.
Vincent Bouttard

Re: SS Cygni in outburst

Post by Vincent Bouttard »

Really nice job, Umberto ! You have the whole decrease of the dwarf nova.
I think that I will do the next eruptive phase in 60 days. This is a fascinating star.

Joan,
According to François Teyssier 's recommendation, I've taken HD211211 (A5V) as reference star. I remember that I saw this reference star in the Eruptive Stars Information Letter.

Vincent
Francois Teyssier
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Re: SS Cygni in outburst

Post by Francois Teyssier »

Yes a very nice series!
Congratulations, Umberto

You could convert the spectra in flux, using AAVSO data with ISIS tool
Flux.PNG
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François
umberto sollecchia
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Re: SS Cygni in outburst

Post by umberto sollecchia »

Merci à tous pour appréciation du travail.
Vincent, le prochain événement, semble avoir prévu pour le mois d'Août.
Cordialement.
Umberto
Joan Guarro Flo
Posts: 620
Joined: Thu Nov 03, 2011 8:50 pm

Re: SS Cygni in outburst

Post by Joan Guarro Flo »

To everybody :

This is the graph of the star SS Cygni, on 2016 07 09.
It is a good object to monitoring ...

Cheers, Joan.
Attachments
_sscyg_20160709_989_J. Guarro.png
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Francois Teyssier
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Re: SS Cygni in outburst

Post by Francois Teyssier »

Vincent, le prochain événement, semble avoir prévu pour le mois d'Août.
The mean interval between outbursts is about 50 days, but not constant (about 20 to 80 days)
SSCyg.PNG
SSCyg.PNG (28.59 KiB) Viewed 7261 times

See, for instance :

http://adsabs.harvard.edu/abs/1992ApJ...401..642C

Note also that there are short and long outburts and that he spectral evolution differs from one type to another
The current knowledge is : outburt outside-inside disk and inside-outside


Bonnes observations

François
umberto sollecchia
Posts: 242
Joined: Tue Dec 30, 2014 3:25 pm

Re: SS Cygni in outburst

Post by umberto sollecchia »

Felicidades Joan, excelente perfil. Pablo y yo esperamos tanto que venga a visitarnos de nuevo en nuestra bella Italia.
Un fuerte abrazo.Umberto
umberto sollecchia
Posts: 242
Joined: Tue Dec 30, 2014 3:25 pm

Re: SS Cygni in outburst

Post by umberto sollecchia »

Francois, je vous remercie beaucoup d'informations.
Salutations
Umberto
Joan Guarro Flo
Posts: 620
Joined: Thu Nov 03, 2011 8:50 pm

Re: SS Cygni in outburst

Post by Joan Guarro Flo »

To all,
It is a new graph of the SS Cyg. We expect a new eruption.
Regards, Joan.
Attachments
_sscyg_20160714_913_J. Guarro.png
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