Call for monitoring of AG Dra by R. Galis & al.

[Francois Teyssier]

Increase of He II, and Balmer lines intensities in the last spectrum obtained by Joan

Equivalent widths mesaured on Echelle spectra:

AGDra.PNG (29.05 KiB) Viewed 7464 times

New observations strongly welcome for the next days

François
Stormy weather here

[Joan Guarro Flo]

Hello,

These graphs, are a complement of the François's anterior explanation.

This is de first service of the Linx.

Today is de second day cloud, the weather will improve on next Wednesday.

Regards, J. Guarro.

[Jaroslav Merc]

Hi all,

According to last AAVSO observations from the previous night, there is an increase of brightness of AG Dra in all filters. Of course, it is based only on the observations by one observer, but nevertheless, also according to your last spectroscopic observation (the increase of EWs of Balmer lines and He II), it is worth monitoring the star in the next days.

We are looking forward to new observations. Have a clear sky!

Regards,
Jaroslav Merc

[umberto sollecchia]

Bonjour à tous, placez le profil d'observation de la nuit 28/05/2017.

Profilo Ag Dra.png (7.73 KiB) Viewed 7442 times

Umberto

[James Foster]

I've been having issues processing my LISA spectra...think I just solved it with another tune-up at the scope.
Here is AG Dra on 28May17:

I labeled the probable He lines...Hope we see more "fireworks" in this system!

James

[Francois Teyssier]

According to last AAVSO observations from the previous night, there is an increase of brightness of AG Dra in all filters. Of course, it is based only on the observations by one observer, but nevertheless, also according to your last spectroscopic observation (the increase of EWs of Balmer lines and He II), it is worth monitoring the star in the next days.

Clear sky last night
The fit is now in the base, Jaroslav

Significant increase of Raman OVI

Update of EW from echelle spectra

AGDra.PNG (29.51 KiB) Viewed 7414 times

James: the identification of He I lines is correct
Your spectrum is welcome in the base!

Umberto: excellent coverage!



François

[Peter Somogyi]

This full weekend's one night result - with an experiment, tuning the Alpy 600 focus on the UV (via mercury lamp's UV lines) + scope too (in turn loosing the IR part's focus):

agdra_20170331_vs_0528.png (17.41 KiB) Viewed 7407 times

Looks like this tuning brought some extra (Balmer serie full).
Also lost the H-alpha with 3 x 15 minute exposures (almost H-beta, too).
The SNR start to become good from 3650A.
However, no big change in this region.

- Peter

[Francois Teyssier]

Nice result Peter!
Waiting for the fit


No change since yesterday

He II declining slowly

François

[umberto sollecchia]

Bonjour, voici le profil hier soir et une comparaison des Raman OVI avec le jour 28/05/2017

Profilo AG Dra.png (7.78 KiB) Viewed 7383 times

Comparazione crop.png (6.15 KiB) Viewed 7383 times

Umberto

[James Foster]

I believe (looking AG Dra in my video finder scope) that AG Dra has brightening as seen last night. I've taken BVI photometry of this object with a C-11 the last two weeks and will process that for submission to AASVO.

In addition, in support of the Solar Analog project, I'm getting a 200mm lens on a ST-8 and RVB & Stromgren V filters to mount on top of my CDK17 and spectroscope to take simultaneous specta/photometry.

James