Dramatic change of H alpha profile

Campaign on the request of Dr Ausgustin Skopal
H alpha line at R > 10,000
and low res spectra

Re: Dramatic change of H alpha profile

Postby Olivier Thizy » Tue Jul 28, 2015 2:13 pm

Interesting as we have been observing the same target last night - a good way to compare our results... and lot of work for the ARAS database administrator François Teyssier!... specially as we have time series (and time seems very critical on CH Cygni with changes within minutes!) and for the eShel spectrograph data we have a large spectral domain with multiple orders... not easy to handle. Have a thought for him! ;-)

Looking forward for the OHP spectroscopy workshop where people there will certainly talk about CH Cygni and those changes!...

Cordialement,
Olivier Thizy
http://observatoire-belle-etoile.blogspot.fr/
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Re: Dramatic change of H alpha profile

Postby Miguel Rodriguez » Thu Jul 30, 2015 2:21 pm

Here is my last spectrum from tonight.
Unfortunately I don't have enough time span to monitor profile changes through the night.
Attachments
_ch_cyg_type_zand_20150730_129_Miguel_Rodriguez_6510_6600.png
_ch_cyg_type_zand_20150730_129_Miguel_Rodriguez_6510_6600.png
_ch_cyg_type_zand_20150730_129_Miguel_Rodriguez_6510_6600.png (9.52 KiB) Viewed 4494 times
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Re: Dramatic change of H alpha profile

Postby Olivier Thizy » Fri Jul 31, 2015 1:44 am

Hello,


a single shot tonight as I didn't want to return the mount and reached the limits. But it shows some changes from your spectrum:

CH Cygni preview.JPG
CH Cygni preview.JPG (83.42 KiB) Viewed 4479 times



Cordialement,
Olivier Thizy
http://observatoire-belle-etoile.blogspot.fr/
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Re: Dramatic change of H alpha profile

Postby Francois Teyssier » Fri Jul 31, 2015 5:22 pm

AAVSO Light Curve

General trend : decreasing since the beginning of June

CHCyg.png
CHCyg.png (10.59 KiB) Viewed 4459 times


Results from 29th and 30th of july :
_chcyg_20150729_865_full_HaHbHg.png
_chcyg_20150729_865_full_HaHbHg.png (14.7 KiB) Viewed 4459 times

_chcyg_20150730_873_full_HaHbHg.png
_chcyg_20150730_873_full_HaHbHg.png (15.64 KiB) Viewed 4459 times


About lines formation :

- CH Cyg : Introduction to CH Cyg campaign by Dr A. Skopal : http://www.astrosurf.com/aras/novae/InformationLetter/ARAS_EruptiveStars_2015-01.pdf
- Symbiotics : Several texts from Dr S. Shore :
http://www.astrosurf.com/aras/novae/InformationLetter/SteveShoreNotes_2013-2014.pdf

François Teyssier
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Re: Dramatic change of H alpha profile

Postby Miguel Rodriguez » Sat Aug 01, 2015 10:35 am

Spectrum from two hours observation.
Attachments
_ch_cyg_zand_type_20150801_118_Miguel_Rodriguez_6510_6600.png
_ch_cyg_zand_type_20150801_118_Miguel_Rodriguez_6510_6600
_ch_cyg_zand_type_20150801_118_Miguel_Rodriguez_6510_6600.png (9.01 KiB) Viewed 4442 times
@ch_cyg.gif
@ch_cyg.gif (84.07 KiB) Viewed 4442 times
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Re: Dramatic change of H alpha profile

Postby Olivier Thizy » Wed Aug 05, 2015 12:04 am

Here is an animation (done with SPLAT-VO tool) of CH Cygni Halpha recorded tonight over two hours with C11 + eShel + ST1603:

CHCygni.gif
CHCygni.gif (599.96 KiB) Viewed 4406 times



Cordialement,
Olivier Thizy
http://observatoire-belle-etoile.blogspot.fr/
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Re: Dramatic change of H alpha profile

Postby Nico Montigiani » Wed Aug 05, 2015 9:05 pm

Hi to all.
Here is our animation of CH Cygni H alpha line rocorded at the night of 02 Aug 2015 over 2 hours.
Instumentation: Meade SC 10"f/10 + Lhires III 1200 l/mm + CCD SBIG ST10XME
Time of single exposition: 600 min

CHCyg_anim.gif
CH Cyg - 02/08/2015 - Associazione Astrofili Fiorentini
CHCyg_anim.gif (74.22 KiB) Viewed 4390 times


Clear sky
Nico Montigiani
Massimiliano Mannucci
Lapo Ferrini
Associazione Astrofili Fiorentini A.A.F., Florence, Italy (mpc code 632)
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Re: Dramatic change of H alpha profile

Postby Francois Teyssier » Wed Aug 05, 2015 9:44 pm

Nice Nico ! You can send me the spectra.

CH Cyg to night
Almost constant

chcyg_ha_20150805.png
chcyg_ha_20150805.png (17.35 KiB) Viewed 4382 times


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Re: Dramatic change of H alpha profile

Postby Olivier GARDE » Thu Aug 06, 2015 7:43 am

A time serie spectra taken just after Olivier Thizy sequence.
3H30 long : A total of 71 spectra of 180s each with eshal spectrograph.

I have also the same animation for H beta and H gamma

Image
LHIRES III #5, LISA, e-Shel, C14, RC400 Astrosib, AP1600
http://o.garde.free.fr/astro/Spectro1/Bienvenue.html
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Re: Dramatic change of H alpha profile

Postby Olivier Thizy » Sat Aug 08, 2015 11:50 am

Here is an animation of the night of august 6th and one from last night (data reduction in ISIS, animation in SpecAudace with 'norma' option):


CH_Cygni_20150806_anim.gif
CH_Cygni_20150806_anim.gif (371.44 KiB) Viewed 4329 times


CH_Cygni_20150807_anim.gif
CH_Cygni_20150807_anim.gif (375.43 KiB) Viewed 4329 times



Equipment: C11 + eShel


Cordialement,
Olivier Thizy
http://observatoire-belle-etoile.blogspot.fr/
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