CH Cyg brightness drop - call for spectra

Information about outbursts of eruptive stars, Be activity, ...
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Robin Leadbeater
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CH Cyg brightness drop - call for spectra

Post by Robin Leadbeater »

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Peter Somogyi
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Joined: Sun Jul 13, 2014 8:56 am

Re: CH Cyg brightness drop - call for spectra

Post by Peter Somogyi »

Well, there are several much higher resolution and wider spectra existing in the database, since nobody else did it yet - let me drop here a quick comparative result of my shots (of every few month, last one from this week):
chyg_2015_2016_06_psomogyi.png
chyg_2015_2016_06_psomogyi.png (77.9 KiB) Viewed 3856 times
I can observe OIII 5007 was striking out towards the end of last year, lately almost vanished He I 4922 and He I 5016 (should be so for all the He I series, I guess), but this drop didn't seem to happen suddenly.
H-beta also dropped (as Francois already noted here http://www.spectro-aras.com/forum/viewt ... 5&start=70).

Assume someone could come up with comparing the recent spectra when it's all gathered.
I'm also looking forward to see professional theories.

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

Re: CH Cyg brightness drop - call for spectra

Post by umberto sollecchia »

Salut, ma contribution.
Profilo chcyg.png
Profilo chcyg.png (5.76 KiB) Viewed 3812 times
Cordialement Umberto
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