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Re: v694 Mon
Posted: Wed Feb 24, 2016 8:13 pm
by Francois Teyssier
Variation of H alpha line
16-02-2016
23-02-2016
- _v694mon_20160223_835_H alpha_1.png (13.68 KiB) Viewed 8950 times
crop
- _v694mon_20160223_835_H alpha_2.png (14.03 KiB) Viewed 8950 times
Re: v694 Mon
Posted: Sat Feb 27, 2016 5:28 pm
by Peter Somogyi
Hello,
Let me present all my recent observations (including 3 new ones) around H-beta, together with acquiring data from AAVSO (putting together as an animated gif):
- v694mon_psomogyi_20160206_0226_with_aavso.gif (106.48 KiB) Viewed 8916 times
As you can see, only the three Fe II multiplets absorption seems to be changing (and line intensities).
Note: I have noticed a wavelength calibration problem - was using wrong calibration line on the right edge (asdb_v694mon_20160206_744, asdb_v694mon_20160211_884) - will send the fix together with the new spectra to the database soon. On this movie, the fix has already been applied.
Cheers,
Peter
Re: v694 Mon
Posted: Sun Feb 28, 2016 9:11 am
by David Boyd
- H-alpha flux vs V mag.png (7.96 KiB) Viewed 8904 times
This graph shows how the H-alpha emission line flux has varied with V magnitude as V694 Mon brightened from 10th mag in early 2015 to 9th mag in early 2016. The H-alpha flux increases by a factor of ~4, the same as the increase in the flux of the star.
David
Re: v694 Mon
Posted: Sun Feb 28, 2016 11:29 am
by Francois Teyssier
Hello David, Hello Peter,
Nice results and analysis
I took them for the next letter
David, could you show the evolution according to JD ?
Peter, should be interesting to produce measures of the intensities (EW)
All the best,
François
Currently updating my gui in matlab to produce spectra with two y scales
Peter the data base is updated with your fixed spectra
Re: v694 Mon
Posted: Wed Mar 02, 2016 9:09 am
by David Boyd
- H-alpha flux vs JD.png (9.11 KiB) Viewed 8867 times
Hello Francois,
Here is the variation of H-alpha flux with JD.
Best wishes,
David
Re: v694 Mon
Posted: Thu Mar 03, 2016 4:53 pm
by umberto sollecchia
Bonsoir à tous, voici le profil de l'observation de 02/03/2016.
- Profilo V694 Mon.png (7.25 KiB) Viewed 8836 times
Salutations Umberto
Re: v694 Mon
Posted: Sat Mar 05, 2016 10:28 am
by Peter Somogyi
Yesterdays state (4 x 10 min, R~1900):
- v694Mon_20160226_vs_0304.png (21.07 KiB) Viewed 8811 times
Absorption shiting to red. The rising spike at 4838.34A in the hole is visible well on all the raw images.
Interesting that the Fe II 4924A absorption looks changed differently than Fe II 5018A, 5169A, but maybe it's just a coincidence of changing there also something else.
Had no time to take any other region, veils closed in.
Peter
Re: v694 Mon
Posted: Sat Mar 05, 2016 8:09 pm
by umberto sollecchia
Bonsoir à tous, voici le profil de l'observation de 04/03/2016.
- Profilo v694mon.png (7.42 KiB) Viewed 8797 times
Salutations Umberto
Re: v694 Mon
Posted: Sat Mar 05, 2016 8:18 pm
by Francois Teyssier
Hi Peter,
The faint emission in the absorption (or lack of absorption) seems interesting
The star is like a geyser : all moves before the eruption
Fe II : these are the 3 lines of a multiplet. To my knowledge, they must have (approximatively) the same behavior.
Umberto : nice !
Let's go on
François, working on the new letter
Re: v694 Mon
Posted: Sun Mar 06, 2016 10:04 pm
by umberto sollecchia
Bonsoir à tous, voici le profil de l'observation de ce soir 06/03/2016.Le P Cyg était légèrement ouverte
- Profilo v694mon.png (7.38 KiB) Viewed 8770 times
Cordialement umberto