v694 Mon

[Francois Teyssier]

Variation of H alpha line
16-02-2016
23-02-2016

_v694mon_20160223_835_H alpha_1.png (13.68 KiB) Viewed 9929 times

crop

_v694mon_20160223_835_H alpha_2.png (14.03 KiB) Viewed 9929 times

[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 9895 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

[David Boyd]

H-alpha flux vs V mag.png (7.96 KiB) Viewed 9883 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

[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

[David Boyd]

H-alpha flux vs JD.png (9.11 KiB) Viewed 9846 times

Hello Francois,

Here is the variation of H-alpha flux with JD.

Best wishes,
David

[umberto sollecchia]

Bonsoir à tous, voici le profil de l'observation de 02/03/2016.

Profilo V694 Mon.png (7.25 KiB) Viewed 9815 times

Salutations Umberto

[Peter Somogyi]

Yesterdays state (4 x 10 min, R~1900):

v694Mon_20160226_vs_0304.png (21.07 KiB) Viewed 9790 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

[umberto sollecchia]

Bonsoir à tous, voici le profil de l'observation de 04/03/2016.

Profilo v694mon.png (7.42 KiB) Viewed 9776 times

Salutations Umberto

[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

[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 9749 times

Cordialement umberto