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 GARDE » Sun Aug 16, 2015 9:35 am

A time serie graph of CH Cyg during 3H30
Image
LHIRES III #5, LISA, e-Shel, C14, RC400 Astrosib, AP1600
http://o.garde.free.fr/astro/Spectro1/Bienvenue.html
Olivier GARDE
 
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Re: Dramatic change of H alpha profile

Postby Jacques Montier » Sat Aug 22, 2015 12:34 pm

Hi all,

10x180s exposures of CH Cyg on 2015/08/22.
CH Cyg Halpha profile is quite stable.

chcyg.png


@anim_chcyg.gif
@anim_chcyg.gif (48.33 KiB) Viewed 4287 times


radial_velocity.png


Best regards,
--
Jacques Montier
Societe d'Astronomie de Rennes
IAU code J23
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Re: Dramatic change of H alpha profile

Postby Olivier GARDE » Wed Aug 26, 2015 10:34 am

Another time series taken last night during 6 hours.
Some smalls variations in the blue and red part of H Alpha

Image

Image

Image
LHIRES III #5, LISA, e-Shel, C14, RC400 Astrosib, AP1600
http://o.garde.free.fr/astro/Spectro1/Bienvenue.html
Olivier GARDE
 
Posts: 967
Joined: Thu Sep 29, 2011 6:35 am
Location: Rhône Alpes FRANCE

Re: Dramatic change of H alpha profile

Postby Peter Somogyi » Sun Aug 30, 2015 9:56 am

It might be very thin veils (though SNR was exceptionally good this time), but I'm not aware of any H2O line at the right peak gash (LHires 2400/23um slit) that seems to be a new feature comparing to my past observations:
@chcyg20150830_goodflat.gif
@chcyg20150830_goodflat.gif (132.52 KiB) Viewed 4218 times


The left peak returned to equal when star reached a tree, obstructing further observation.

EDIT: accidentally used a raw flat instead of reduced one, uploaded a corrected animation (no real change, my statements valid).
Peter Somogyi
 
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Re: Dramatic change of H alpha profile

Postby Jacques Montier » Wed Sep 02, 2015 2:41 pm

Hi all,

CH Cyg of the last night 2015/09/01

20150901-chcyg.png
20150901-chcyg.png (48.47 KiB) Viewed 4196 times


Time series of 18 x 180s

20150901-chcyg.gif
20150901-chcyg.gif (459.1 KiB) Viewed 4196 times


Regards,
--
Jacques Montier
Societe d'Astronomie de Rennes
IAU code J23
Jacques Montier
 
Posts: 242
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Re: Dramatic change of H alpha profile

Postby Olivier GARDE » Mon Sep 07, 2015 10:30 pm

A time serie taken the 5th september during 4 hours. Some variation in the blue part of H Alpha
Image

Image

Image
LHIRES III #5, LISA, e-Shel, C14, RC400 Astrosib, AP1600
http://o.garde.free.fr/astro/Spectro1/Bienvenue.html
Olivier GARDE
 
Posts: 967
Joined: Thu Sep 29, 2011 6:35 am
Location: Rhône Alpes FRANCE

Re: Dramatic change of H alpha profile

Postby Peter Somogyi » Mon Sep 21, 2015 7:39 pm

CH Cyg was not at rest yesterday (2015.09.20, 31 x 5 min):
CHCyg_20150920_21.gif
CHCyg_20150920_21.gif (253.66 KiB) Viewed 4129 times

I had to discard the 24. exposure due to cosmic ray has hit directly the H-alpha region, that has been interpolated by (23+25)/2 here.
Sky was poor at this time, so as the SNR.

2D (33% shrink by X, 300% enlarged by Y):
CHCyg_20150920_2d.png
CHCyg_20150920_2d.png (165.57 KiB) Viewed 4129 times


2D by column median removed:
CHCyg_20150920_2d_colmed.png
CHCyg_20150920_2d_colmed.png (165.57 KiB) Viewed 4129 times

Interesting to see the faint afterglow continued on the other(R) side.

Cheers,
Peter
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Re: Dramatic change of H alpha profile

Postby Olivier GARDE » Sun Nov 01, 2015 10:21 pm

Another time serie of CH Cyg taken last night during 2H30
Image
LHIRES III #5, LISA, e-Shel, C14, RC400 Astrosib, AP1600
http://o.garde.free.fr/astro/Spectro1/Bienvenue.html
Olivier GARDE
 
Posts: 967
Joined: Thu Sep 29, 2011 6:35 am
Location: Rhône Alpes FRANCE

Re: Dramatic change of H alpha profile

Postby Olivier GARDE » Tue May 17, 2016 4:52 pm

Time serie spectrum of CH Cyg during 3H45' with eshel spectrograph R=110000

The full spectrum
Image

Time serie spectrum on order 34 (H Alpha)
Image

And an animation of HeI 5876 Å line

Is the small "pick" evolution inside HeI line are real or not ?
Image
LHIRES III #5, LISA, e-Shel, C14, RC400 Astrosib, AP1600
http://o.garde.free.fr/astro/Spectro1/Bienvenue.html
Olivier GARDE
 
Posts: 967
Joined: Thu Sep 29, 2011 6:35 am
Location: Rhône Alpes FRANCE

Re: Dramatic change of H alpha profile

Postby etienne bertrand » Fri May 20, 2016 1:14 pm

Bravo pour cet excellent travail
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