V694 Mon revisted
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Re: V694 Mon revisted
Here are some more LhiresIII spectra of V0694 Mon done before inclement weather set in (used HD071155 at instrument calibration reference star):
Ha region:
Hb region:
There were quiet a few emission line around the emission spike of the H-Beta line; I could only identify the FeII line around 4923.92A.
Just a few more weeks before this goes too far west and too low for high quality spectrum.
James
Ha region:
Hb region:
There were quiet a few emission line around the emission spike of the H-Beta line; I could only identify the FeII line around 4923.92A.
Just a few more weeks before this goes too far west and too low for high quality spectrum.
James
James Foster
eShel2-Zwo ASI6200MM Pro
Lhires III (2400/1800/600 ln/mm Grat) Spectroscope
LISA IR/Visual Spectroscope (IR Configured)
Alpy 200/600 with Guide/Calibration modules and Photometric slit
Star Analyzer 200
eShel2-Zwo ASI6200MM Pro
Lhires III (2400/1800/600 ln/mm Grat) Spectroscope
LISA IR/Visual Spectroscope (IR Configured)
Alpy 200/600 with Guide/Calibration modules and Photometric slit
Star Analyzer 200
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Re: V694 Mon revisted
Bonjour à tous, placez le profil de l'observation du 09-03-2018. Umberto
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Re: V694 Mon revisted
Another spectra between Southern California rain storms....V0694 Mon around CaK:
There has been a decrease in the H-zeta & CaK line activity as compared with the 08Feb18 spectra. Of course, since this band
is susceptible to poor atmospherics, it might be that these lines suffered from UV absorbing aerosols and/or low altitude observation.
James
There has been a decrease in the H-zeta & CaK line activity as compared with the 08Feb18 spectra. Of course, since this band
is susceptible to poor atmospherics, it might be that these lines suffered from UV absorbing aerosols and/or low altitude observation.
James
James Foster
eShel2-Zwo ASI6200MM Pro
Lhires III (2400/1800/600 ln/mm Grat) Spectroscope
LISA IR/Visual Spectroscope (IR Configured)
Alpy 200/600 with Guide/Calibration modules and Photometric slit
Star Analyzer 200
eShel2-Zwo ASI6200MM Pro
Lhires III (2400/1800/600 ln/mm Grat) Spectroscope
LISA IR/Visual Spectroscope (IR Configured)
Alpy 200/600 with Guide/Calibration modules and Photometric slit
Star Analyzer 200
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Re: V694 Mon revisted
Hello,
Opening the new season for v694 Mon: a fresh, lucky 1x10 minuter at the lowest level I can shoot v694 Mon from this morning - the P-Cyg profile has mostly vanished (a very rare state), uncovering a blue wing: Had to wait like 30 minute to rise above a tree, and had to move the next 10-minuter to trash because of too much sunlight contamination and poor guiding against rising sun.
The two wings confirmable visually on the raw image, and the removed background is a bit contaminated by the Sun's H-beta absorption (that is narrower than the wings).
I'd appreciate if somebody could confirm the existence of the blue wing, as once I've had hard times to prove such a validity for a professional.
- Peter
Opening the new season for v694 Mon: a fresh, lucky 1x10 minuter at the lowest level I can shoot v694 Mon from this morning - the P-Cyg profile has mostly vanished (a very rare state), uncovering a blue wing: Had to wait like 30 minute to rise above a tree, and had to move the next 10-minuter to trash because of too much sunlight contamination and poor guiding against rising sun.
The two wings confirmable visually on the raw image, and the removed background is a bit contaminated by the Sun's H-beta absorption (that is narrower than the wings).
I'd appreciate if somebody could confirm the existence of the blue wing, as once I've had hard times to prove such a validity for a professional.
- Peter
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Re: V694 Mon revisted
Interesting, Peter
You've an the blue end of the line in faint emission
The last spectrum obtained by Umberto shows a very weak blue absorption
See
http://www.astrosurf.com/aras/novae/Inf ... 018-02.pdf
All the best
François
You've an the blue end of the line in faint emission
The last spectrum obtained by Umberto shows a very weak blue absorption
See
http://www.astrosurf.com/aras/novae/Inf ... 018-02.pdf
All the best
François
François Teyssier
http://www.astronomie-amateur.fr
http://www.astronomie-amateur.fr
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Re: V694 Mon revisted
Today morning's result - similar, in a better quality (5 x 10 mins):
A narrow absorption is definitely still there (as previous result suggested).
- Peter
This SNR would allow high resolution (maybe next time).A narrow absorption is definitely still there (as previous result suggested).
- Peter
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Re: V694 Mon revisted
Fresh result from this morning, a similar structure at H-alpha - this time high resolution (R~12000):
Peter
A year-to-year comparative evolution (all spectra captured by me):
The plateu suddenly drops at -800 and +900 km/sec.Peter
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Re: V694 Mon revisted
With a fresh result from this cloudy morning, presenting H-alpha evolution in the past few weeks:
Perhaps (hard guess), a V-side peak is uncovering?
- Peter
The essence of changes require magnification + good SNR:
Although there have been no remarkable change between 10.06 and 10.13, the V wing has increased by now (whilst the R side remained proportional to the H-alpha intensity).Perhaps (hard guess), a V-side peak is uncovering?
- Peter
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Re: V694 Mon revisted
That's very interesting, Peter.
I don't remember such profiles in the various publications about V694 Mon
It could be interpreted as the weakening or loss of the jets
Of course, monotoring of MWC560 is strongly recommended.
H alpha and H beta this year from spectra obtained by Peter and Umberto
showing the sudden changes of the profiles. The lightcurve: François
I don't remember such profiles in the various publications about V694 Mon
It could be interpreted as the weakening or loss of the jets
Of course, monotoring of MWC560 is strongly recommended.
H alpha and H beta this year from spectra obtained by Peter and Umberto
showing the sudden changes of the profiles. The lightcurve: François
François Teyssier
http://www.astronomie-amateur.fr
http://www.astronomie-amateur.fr
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Re: V694 Mon revisted
Here is a long wavelength (4000-9550A) of V0694 Mon I did from my high altitude side on 2 separate nights:
I'm going to try this again in December's new moon if the weather holds, with 2 telescopes shooting simultaneously.
James
I'm going to try this again in December's new moon if the weather holds, with 2 telescopes shooting simultaneously.
James
James Foster
eShel2-Zwo ASI6200MM Pro
Lhires III (2400/1800/600 ln/mm Grat) Spectroscope
LISA IR/Visual Spectroscope (IR Configured)
Alpy 200/600 with Guide/Calibration modules and Photometric slit
Star Analyzer 200
eShel2-Zwo ASI6200MM Pro
Lhires III (2400/1800/600 ln/mm Grat) Spectroscope
LISA IR/Visual Spectroscope (IR Configured)
Alpy 200/600 with Guide/Calibration modules and Photometric slit
Star Analyzer 200