V694 Mon

Re: V694 Mon

Postby Peter Somogyi » Thu Oct 24, 2019 11:11 am

Nice coverage with the HST, Terry and Woody!
I can shoot it only in the morning skies - managed at least bracketing the critical time (2 days before - vs - today):
v694Mon_vhel_HaHbHeI4922_velo.png
4 x 20 minute H-alpha, 4 x 20 minute H-beta
v694Mon_vhel_HaHbHeI4922_velo.png (87.66 KiB) Viewed 4016 times

The He I 4922 change is visible also visually on raw spectra, it's the most obvious above noise level.
H-beta show some smaller RV changes (far above noise), and H-alpha some global EW change.

- Peter
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Re: V694 Mon

Postby Forrest Sims » Fri Oct 25, 2019 4:38 pm

Hi Peter and Terry,

I was able to capture a sequence of spectra with my LISA of V694 Mon early morning before the HST window on the 23rd. I took 12 sequences of 7 images each starting with exposures of 120 seconds and ending with exposures of 80 seconds. Even so I still saturated Halpha in some of the sequence as the altitude increased and the sky brightened after astronomical dawn. Here are two PlotSpectra charts, the first one showing the 12 sequences with attention drawn to Hdelta at 4101.73 and the second one showing the PlotSpectra subplot for your HeI 4921.93 line. In the case of the Hdelta line, maybe there is some real change taking place over this several hour period. I suspect the general spread in the lines is due to having to choose one Reference star (therefore one Response curve) and apply it to all 12 sequences. But it still looks like there might be an amplitude change over time. And the other plot shows the HeI line Peter described but lower resolution than Peter's.

Woody Sims
Attachments
V694 Mon 12 spectra sequence with Hdelta.PNG
v694mon_4922 subplot.png
v694mon_4922 subplot.png (49.47 KiB) Viewed 3990 times
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Observations requested in support to CHANDRA obs.

Postby Francois Teyssier » Sat Jan 18, 2020 4:27 pm

Margarita Karovska informs:
CHANDRA observations are scheduled for the week January 26 to February 3
Margarita Karovska

The extraordinary V694 Mon (MWC 560) is at its historical brightest luminosity. The previous record was ~ 9 during 1990 visual outburst.

V694Mon.PNG
V694Mon.PNG (25.45 KiB) Viewed 3229 times



Daily monitoring is recommended (very fast variation)
The IR spectrum shows impressive emissions of OI and Ca II
For Lhires HR, H alpha and the H beta region with the Fe II (42) multiplet are recommended.


Flux calibrated spectrum obtained by Woody Sims

asdb_v694mon_20200112_304.png
asdb_v694mon_20200112_304.png (11.61 KiB) Viewed 3229 times


Echelle spectrum obtained by Joan Guarro;

_v694mon_20200115_932_J. Guarroa.png
_v694mon_20200115_932_J. Guarroa.png (13.68 KiB) Viewed 3229 times

_v694mon_20200115_932_J. Guarrob.png
_v694mon_20200115_932_J. Guarrob.png (22.08 KiB) Viewed 3229 times


Clear skies

François
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Re: V694 Mon

Postby umberto sollecchia » Thu Jan 23, 2020 10:26 pm

Bonsoir à tous, ma contribution sur cette symbiotique.
Umberto

v694mon_20200122_863_U.Sollecchia.png
v694mon_20200122_863_U.Sollecchia.png (20.2 KiB) Viewed 3111 times


Vitesse radiale
v694mon_20200122_863_V.R._U. Sollecchia.png
v694mon_20200122_863_V.R._U. Sollecchia.png (12.94 KiB) Viewed 3111 times
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Re: V694 Mon

Postby Francois Teyssier » Fri Jan 24, 2020 7:36 pm

Excellent monitoring for this campaign.

From echelle spectra obtained by Joan Guarro and François Teyssier:

asdb_v694mon_20200115_932_H alpha H beta Fe II 4924.png
asdb_v694mon_20200115_932_H alpha H beta Fe II 4924.png (15.12 KiB) Viewed 3078 times


asdb_v694mon_20200117_917_H alpha H beta Fe II 4924.png
asdb_v694mon_20200117_917_H alpha H beta Fe II 4924.png (14.91 KiB) Viewed 3078 times


asdb_v694mon_20200121_886_H alpha H beta Fe II 4924.png
asdb_v694mon_20200121_886_H alpha H beta Fe II 4924.png (15.52 KiB) Viewed 3078 times
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Support to HST observations February 13th

Postby Francois Teyssier » Sat Feb 01, 2020 10:50 pm

Margarita Kavoska communicates:

Here is an update on the HST schedule:
MWC 560 is currently scheduled for Feb 13 10-16 UT.
So intense spectroscopy during
*Feb 11-Feb 16* (including if at all possible possible several spectra per night) will be great.
Since the source is still in outburst a bi-weekly observations from now to the end of February (and as long as it is observable - into March?) will be very helpful!
Thanks a lot and all the best,
Margarita
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Re: V694 Mon

Postby Christophe Boussin » Mon Feb 10, 2020 10:35 pm

Hello all,

Here is my contribution to the monitoring of V694 Mon.
The spectrum below was obtained on February 6 at 22 h 59 TU (Alpy 600, resolution 502, JJ = 2458886.4577, 6 exposures of 300 s) :

_v694mon_20200206_958_Christophe Boussin_3700_7570.png
V694 Mon on February 6th, 2020
_v694mon_20200206_958_Christophe Boussin_3700_7570.png (76.68 KiB) Viewed 2688 times

Hoping for clear skies for the next days...!

Christophe BOUSSIN
CBO (Newton 200 F/5 / Alpy600 / Atik 314L+ / Atik Titan) @ ARAS database
Christophe Boussin
 
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Re: V694 Mon

Postby Christophe Boussin » Wed Feb 12, 2020 3:41 pm

Hello all,

Here is my last contribution to the monitoring of V694 Mon.
The spectrum below was obtained, last night, on February 11 at 21 h 46 TU (Alpy 600, resolution 503, JJ = 2458891.4072, 6 exposures of 300 s) :

_v694mon_20200211_907_Christophe Boussin_3700_7570.png
V694 Mon on February 11th, 2020
_v694mon_20200211_907_Christophe Boussin_3700_7570.png (70.25 KiB) Viewed 2631 times


Christophe BOUSSIN
CBO (Newton 200 F/5 / Alpy600 / Atik 314L+ / Atik Titan) @ ARAS database
Christophe Boussin
 
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Re: V694 Mon

Postby Christophe Boussin » Tue Feb 18, 2020 5:04 pm

Hello all,

After several cloudy nights, a « window » of clear weather opened last night to resume the monitoring of V694 Mon !

The spectrum below was obtained, on February 17 at 22 h 25 TU (Alpy 600, resolution 504, JJ = 2458897.4341, 8 exposures of 300 s) :

_v694mon_20200217_934_Christophe Boussin_3700_7570.png
V694 Mon on February 17th, 2020
_v694mon_20200217_934_Christophe Boussin_3700_7570.png (76.62 KiB) Viewed 2479 times

Clear skies to all !

Christophe BOUSSIN
CBO (Newton 200 F/5 / Alpy600 / Atik 314L+ / Atik Titan) @ ARAS database
Christophe Boussin
 
Posts: 84
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Re: V694 Mon

Postby Christophe Boussin » Fri Feb 21, 2020 11:34 pm

Hello all,

After a heavy rain shower...I got a new spectrum of V694 Mon under a very clear sky !
The spectrum below was obtained, on February 20 at 23 h 05 TU (Alpy 600, resolution 505, JJ = 2458900.4623, 8 exposures of 300 s) :

_v694mon_20200220_962_Christophe Boussin_3700_7570.png
V694 Mon on February 20th, 2020
_v694mon_20200220_962_Christophe Boussin_3700_7570.png (71.79 KiB) Viewed 2364 times

Clear skies to all !

Christophe BOUSSIN
CBO (Newton 200 F/5 / Alpy600 / Atik 314L+ / Atik Titan) @ ARAS database
Christophe Boussin
 
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