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VV Cep at R=50000 + ancient observations

Posted: Sun Aug 02, 2015 12:05 pm
by Christian Buil
A VHIRES (R=50000) (on a 8-inch Newton telescope) spectrum of VV Cep the 2.002 / 08 / 2015 (exposure: 8 x 600 sec.):

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With the same setup and the same night, for comparison, a spectrum of gamma Peg:

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and gamma Cas (Be star of course):

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An ancient unpublished observation of VV Cep (June 12, 2009, 6 years ago):

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Halpha detail:

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And a very ancient observation of VV Cep (August 1999, 16 years ago!!!). See URL:

http://www.astrosurf.com/buil/us/peculiar2/vvcep.htm

Christian

Re: VV Cep at R=50000 + ancient observations

Posted: Sun Aug 02, 2015 1:59 pm
by Ernst Pollmann
Hi Christian,
here comes the evaluation of your current spectrum.

Ernst

Re: VV Cep at R=50000 + ancient observations

Posted: Sun Aug 02, 2015 3:02 pm
by Christian Buil
Thanks Ernst!

Christian

Re: VV Cep at R=50000 + ancient observations

Posted: Mon Aug 03, 2015 3:14 pm
by Ernst Pollmann
Hi Christian,
would you be so friendly to send your gamma Cas spectrum.
It might be helpful before the background, to clear the bump in the rise of the RV.

Ernst