Symbiotic AX Per in outburst

Information about outbursts of eruptive stars, Be activity, ...
Francois Teyssier
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Symbiotic AX Per in outburst

Post by Francois Teyssier »

The prototype Symbiotic AX Per has been detected in outburst by ANS collaboration
See http://www.astronomerstelegram.org/?read=6382

The current mag is about 10.5
Spectra of this event are welcome for ARAS data base http://www.astrosurf.com/aras/Aras_Data ... /AXPer.htm

François Teyssier
Christian Buil
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Re: Symbiotic AX Per in outburst

Post by Christian Buil »

Comparison of AX Per taken the 31/07/2014 (OHP, Celestron 9 + VHIRES R = 50000)
and the 14/08/2014 (Castanet, C11 + VHIRES R = 50000).

Halpha line :

Image

Image

HeI 5876 A :

Image

Image

HeII 4686 A

Image

Image

No perceptible change at this resolution (note Halpha and He, fully resolved).

Christian
Francois Teyssier
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Re: Symbiotic AX Per in outburst

Post by Francois Teyssier »

AX Per
_axper_20140831_900_fteyssier.png
_axper_20140831_900_fteyssier.png (4.03 KiB) Viewed 8986 times
[Fe VII] lines have disappeared during the outburst
Note also the low ratio [OIII] 5007/ [OIII] 4363
Temperature of the hot star drecrease during the outburst (expansion of the envelop)
Tim Lester
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Re: Symbiotic AX Per in outburst

Post by Tim Lester »

AX Per on 09/04.

Image

Tim
Jacques Montier
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Re: Symbiotic AX Per in outburst

Post by Jacques Montier »

Hello,

Ax Per on 26/09
axper.png
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Jacques Montier
Societe d'Astronomie de Rennes
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Jacques Montier
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Re: Symbiotic AX Per in outburst

Post by Jacques Montier »

Hello,

Ax Per on 01/10
axper.png
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Jacques Montier
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Jacques Montier
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Re: Symbiotic AX Per in outburst

Post by Jacques Montier »

Hello,

Ax Per on 20141027
axper.png
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Jacques Montier
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Jacques Montier
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Re: Symbiotic AX Per in outburst

Post by Jacques Montier »

Hello,

[FeVII] 5721A and [FeVII] 6087A lines on 2014/10/27 ?
axper_animation.gif
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Jacques Montier
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Francois Teyssier
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Re: Symbiotic AX Per in outburst

Post by Francois Teyssier »

C'est exactement ça, Jacques.
L'enveloppe qui entoure la naine blanche commence à se rétracter, sa température augmente (PV = nRT),ordre de grandeur : 100 000 K et son rayonnement se durcit, jusqu'à pouvoir ioniser le fer 6 fois. Les raies excitées par collisation [Fe VII] réapparaissent. On doit pouvoir également observer un renforcement des raies de forte excitation, comme ar exemple He II.
Bonne continuation,
François

L'estimation de la température de l'objet chaud peut être réalisée à partir de la mesure des raies H béta, He II 4686 et He I 4471
Voir : http://www.astronomie-amateur.fr/feuill ... Cyg_2.html

Bonne continuation

François
Jacques Montier
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Re: Symbiotic AX Per in outburst

Post by Jacques Montier »

Merci François pour ces infos.
Ah je sens que je vais bientôt lui prendre sa température... ;)

Amitiés,
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Jacques Montier
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IAU code J23
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