CX Dra in outburst
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CX Dra in outburst
Version Française juste dessous :
This night, I just take the spectrum of CX Dra and the H alpha line is not in emission
Here is the graph that compares my spectrum of June 22th with the spectrum taken now.
Je viens de faire le spectre de CX Dra et la raie H alpha n'est plus en emission (comme lors de mon dernier spectre du 22 juin 2016)
Voici le graphe qui compare mon spectre du 22 juin avec celui réalisé à l'instant.
This night, I just take the spectrum of CX Dra and the H alpha line is not in emission
Here is the graph that compares my spectrum of June 22th with the spectrum taken now.
Je viens de faire le spectre de CX Dra et la raie H alpha n'est plus en emission (comme lors de mon dernier spectre du 22 juin 2016)
Voici le graphe qui compare mon spectre du 22 juin avec celui réalisé à l'instant.
LHIRES III #5, LISA, e-Shel, C14, RC400 Astrosib, AP1600
http://o.garde.free.fr/astro/Spectro1/Bienvenue.html
http://o.garde.free.fr/astro/Spectro1/Bienvenue.html
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- Posts: 1244
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Re: CX Dra in outburst
And the H Beta line
LHIRES III #5, LISA, e-Shel, C14, RC400 Astrosib, AP1600
http://o.garde.free.fr/astro/Spectro1/Bienvenue.html
http://o.garde.free.fr/astro/Spectro1/Bienvenue.html
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- Posts: 1244
- Joined: Thu Sep 29, 2011 6:35 am
- Location: Rhône Alpes FRANCE
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Re: CX Dra in outburst
Last change in H alpha line for CX Dra, here's a graph show the evolution of H Alpha line since 2014.
Last spectrum of 4th october show emission line again compare to a spectrum taken in jully 2016 in absorption.
Un spectre de CX Dra réalisé le 4 octobre dernier montre que la raie H Alpha est de nouveau en émission alors qu'elle était en absorption en juillet dernier.
Last spectrum of 4th october show emission line again compare to a spectrum taken in jully 2016 in absorption.
Un spectre de CX Dra réalisé le 4 octobre dernier montre que la raie H Alpha est de nouveau en émission alors qu'elle était en absorption en juillet dernier.
LHIRES III #5, LISA, e-Shel, C14, RC400 Astrosib, AP1600
http://o.garde.free.fr/astro/Spectro1/Bienvenue.html
http://o.garde.free.fr/astro/Spectro1/Bienvenue.html
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Re: CX Dra in outburst
Salut Olivier
Yes cx dra is a star which has a profile which evolves quite often. In fact it is a Binary star B3+F5III
Here is the summary view for all the BeSS spectra - evolutions from day to day can be observed. Would worth a look at litterature.
V.-
Yes cx dra is a star which has a profile which evolves quite often. In fact it is a Binary star B3+F5III
Here is the summary view for all the BeSS spectra - evolutions from day to day can be observed. Would worth a look at litterature.
V.-
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- Joined: Thu Sep 29, 2011 6:35 am
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Re: CX Dra in outburst
Last spectrum of CX Dra taken 2 nights ago and evolution since my last observation
H-Alpha
H-Beta
And evolution from all my data since 2014
H-Alpha
H-Beta
And evolution from all my data since 2014
LHIRES III #5, LISA, e-Shel, C14, RC400 Astrosib, AP1600
http://o.garde.free.fr/astro/Spectro1/Bienvenue.html
http://o.garde.free.fr/astro/Spectro1/Bienvenue.html
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- Posts: 1244
- Joined: Thu Sep 29, 2011 6:35 am
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Re: CX Dra in outburst
Another spectrum taken last night show the H Alpha line increase and also some change in H beta.
LHIRES III #5, LISA, e-Shel, C14, RC400 Astrosib, AP1600
http://o.garde.free.fr/astro/Spectro1/Bienvenue.html
http://o.garde.free.fr/astro/Spectro1/Bienvenue.html
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- Posts: 1244
- Joined: Thu Sep 29, 2011 6:35 am
- Location: Rhône Alpes FRANCE
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Re: CX Dra in outburst
Last change in CX Dra spectrum
Comparison with the last spectrum in BESS taken one month ago
Comparison with the last spectrum in BESS taken one month ago
LHIRES III #5, LISA, e-Shel, C14, RC400 Astrosib, AP1600
http://o.garde.free.fr/astro/Spectro1/Bienvenue.html
http://o.garde.free.fr/astro/Spectro1/Bienvenue.html
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- Posts: 1244
- Joined: Thu Sep 29, 2011 6:35 am
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Re: CX Dra in outburst
Another observation of this Be star (comparison with the last spectrum in BESS database)
and the last 7 spectra of this Be star
and the last 7 spectra of this Be star
LHIRES III #5, LISA, e-Shel, C14, RC400 Astrosib, AP1600
http://o.garde.free.fr/astro/Spectro1/Bienvenue.html
http://o.garde.free.fr/astro/Spectro1/Bienvenue.html
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- Posts: 1244
- Joined: Thu Sep 29, 2011 6:35 am
- Location: Rhône Alpes FRANCE
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Re: CX Dra in outburst
Last evolution of CX Dra
LHIRES III #5, LISA, e-Shel, C14, RC400 Astrosib, AP1600
http://o.garde.free.fr/astro/Spectro1/Bienvenue.html
http://o.garde.free.fr/astro/Spectro1/Bienvenue.html
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- Posts: 1244
- Joined: Thu Sep 29, 2011 6:35 am
- Location: Rhône Alpes FRANCE
- Contact:
Re: CX Dra in outburst
Last observation of CX Dra and comparison with my last spectrum of october 17th.
LHIRES III #5, LISA, e-Shel, C14, RC400 Astrosib, AP1600
http://o.garde.free.fr/astro/Spectro1/Bienvenue.html
http://o.garde.free.fr/astro/Spectro1/Bienvenue.html