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Re: V694 Mon
Posted: Thu Oct 24, 2019 11:11 am
by Peter Somogyi
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):
- 4 x 20 minute H-alpha, 4 x 20 minute H-beta
- v694Mon_vhel_HaHbHeI4922_velo.png (87.66 KiB) Viewed 8172 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
Re: V694 Mon
Posted: Fri Oct 25, 2019 4:38 pm
by Forrest Sims
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
Observations requested in support to CHANDRA obs.
Posted: Sat Jan 18, 2020 4:27 pm
by Francois Teyssier
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 (25.45 KiB) Viewed 7385 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 (11.61 KiB) Viewed 7385 times
Echelle spectrum obtained by Joan Guarro;
- _v694mon_20200115_932_J. Guarroa.png (13.68 KiB) Viewed 7385 times
- _v694mon_20200115_932_J. Guarrob.png (22.08 KiB) Viewed 7385 times
Clear skies
François
Re: V694 Mon
Posted: Thu Jan 23, 2020 10:26 pm
by umberto sollecchia
Bonsoir à tous, ma contribution sur cette symbiotique.
Umberto
- v694mon_20200122_863_U.Sollecchia.png (20.2 KiB) Viewed 7267 times
Vitesse radiale
- v694mon_20200122_863_V.R._U. Sollecchia.png (12.94 KiB) Viewed 7267 times
Re: V694 Mon
Posted: Fri Jan 24, 2020 7:36 pm
by Francois Teyssier
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 (15.12 KiB) Viewed 7234 times
- asdb_v694mon_20200117_917_H alpha H beta Fe II 4924.png (14.91 KiB) Viewed 7234 times
- asdb_v694mon_20200121_886_H alpha H beta Fe II 4924.png (15.52 KiB) Viewed 7234 times
Support to HST observations February 13th
Posted: Sat Feb 01, 2020 10:50 pm
by Francois Teyssier
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
Re: V694 Mon
Posted: Mon Feb 10, 2020 10:35 pm
by Christophe Boussin
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) :
- V694 Mon on February 6th, 2020
- _v694mon_20200206_958_Christophe Boussin_3700_7570.png (76.68 KiB) Viewed 6844 times
Hoping for clear skies for the next days...!
Christophe BOUSSIN
Re: V694 Mon
Posted: Wed Feb 12, 2020 3:41 pm
by Christophe Boussin
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) :
- V694 Mon on February 11th, 2020
- _v694mon_20200211_907_Christophe Boussin_3700_7570.png (70.25 KiB) Viewed 6787 times
Christophe BOUSSIN
Re: V694 Mon
Posted: Tue Feb 18, 2020 5:04 pm
by Christophe Boussin
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) :
- V694 Mon on February 17th, 2020
- _v694mon_20200217_934_Christophe Boussin_3700_7570.png (76.62 KiB) Viewed 6635 times
Clear skies to all !
Christophe BOUSSIN
Re: V694 Mon
Posted: Fri Feb 21, 2020 11:34 pm
by Christophe Boussin
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) :
- V694 Mon on February 20th, 2020
- _v694mon_20200220_962_Christophe Boussin_3700_7570.png (71.79 KiB) Viewed 6520 times
Clear skies to all !
Christophe BOUSSIN