Hi Bob,

Thanks. THe paper looks interesting. Do you know how I can get an English version? Also the downloaded file has a .pdf after it, but does not seem to be a pdf.

Jeff

Hopkins Phoenix Observatory

(187283)

Counting Photons

Phoenix, Arizona USA

www.hposoft.com/Astro/astro.html

International Epsilon Aurigae Campaign

http://www.hposoft.com/Campaign09.html

On Feb 11, 2012, at 9:22 AM, R. Stencel wrote:

 

During the campaign, several observers reported spectral line splitting.  The suspicion is that "pulsations" of the F star contributed to same.  Given the dominant 67 day period reported by Kim 2008* and seen even during totality, has anyone made a systematic study of this effect in lines especially sensitive to this?  Thanks in advance for your reply.  This systematic - if demonstrated - should help remove that variable from analysis of the disk.

*Kim, H. 2008 Korean Journal of Astronomy and Space Sciences. 25: 1 - Period Analysis for the F Component of the É› Aurigae System Using Wavelets. http://adsabs.harvard.edu/abs/2008JASS...25....1K

On Wed, Feb 1, 2012 at 11:43 AM, Thierry Garrel <gabalou@...> wrote:

 

Risk of snow prevent me to open the observatory but the sky is still clear and windy. There is a bright eps aur waiting for spectra, so doing spectra or not doing spectra, that's the question.

And if at the end, there won't be no return to pre eclipsed values has a clues of matter exchanges in this system or more if there is no means values at all due to lack and sparse out of eclipse observations. Fast change of profile in the Na D may be an indication of so.

Snowing or not snowing ?

T  

2012/2/1 Robin Leadbeater <robin@...>

 

Thanks Thierry,

 

These will be  very useful to define the end of the eclipse spectroscopically.

 

I took spectra on 27th Jan. I could still see a small signal from the disc at 7699A and the NaD Equivalent Width was still significantly higher than pre eclipse. I am just taking another 7699A spectrum now.  

 

Cheers

Robin

 

----- Original Message -----

From: Thierry Garrel

To: Robin Leadbeater ; EpsilonAurigae@yahoogroups.com ; BM

Sent: Wednesday, February 01, 2012 9:40 AM

Subject: [EpsilonAurigae] New echelle spectra and end of eclipse ?

Hello,

some echelle observations, taken with a 0.35m f5 telescope, eshell+ST10 camera covering 4300 to 7300 A at R10000 with 0.1A dispersion. Tungstene 2700k flat applied, dark current and offset soustracted, Instrumental correction on A type star Vega.

It seems that the eclipsing object h alpha signature has completely vanished between the last two spectra, Jan 22th and Jan 30th, for the first time. It the inverse in the sodium doublet with deep absorption profile on the 22th and a fill in on the 30th.

Cheers

thierry Garrel