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Symbiotic AX Per in outburst
Posted: Mon Aug 11, 2014 4:21 pm
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
Re: Symbiotic AX Per in outburst
Posted: Fri Aug 15, 2014 4:09 pm
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 :
HeI 5876 A :
HeII 4686 A
No perceptible change at this resolution (note Halpha and He, fully resolved).
Christian
Re: Symbiotic AX Per in outburst
Posted: Mon Sep 01, 2014 5:17 pm
by Francois Teyssier
AX Per
- _axper_20140831_900_fteyssier.png (4.03 KiB) Viewed 9860 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)
Re: Symbiotic AX Per in outburst
Posted: Thu Sep 04, 2014 10:58 pm
by Tim Lester
AX Per on 09/04.
Tim
Re: Symbiotic AX Per in outburst
Posted: Fri Sep 26, 2014 12:52 pm
by Jacques Montier
Hello,
Ax Per on 26/09
- axper.png (9.97 KiB) Viewed 9730 times
Regards,
Re: Symbiotic AX Per in outburst
Posted: Wed Oct 01, 2014 3:18 pm
by Jacques Montier
Hello,
Ax Per on 01/10
- axper.png (12.32 KiB) Viewed 9710 times
Regards,
Re: Symbiotic AX Per in outburst
Posted: Tue Oct 28, 2014 2:53 pm
by Jacques Montier
Hello,
Ax Per on 20141027
- axper.png (10.33 KiB) Viewed 9630 times
Regards,
Re: Symbiotic AX Per in outburst
Posted: Thu Oct 30, 2014 5:46 pm
by Jacques Montier
Hello,
[FeVII] 5721A and [FeVII] 6087A lines on 2014/10/27 ?
- axper_animation.gif (23.71 KiB) Viewed 9603 times
Regards,
Re: Symbiotic AX Per in outburst
Posted: Fri Oct 31, 2014 5:45 pm
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
Re: Symbiotic AX Per in outburst
Posted: Sat Nov 01, 2014 10:00 am
by Jacques Montier
Merci François pour ces infos.
Ah je sens que je vais bientôt lui prendre sa température...
Amitiés,