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 Christian Buil » Sat Jun 06, 2015 9:47 am

Global display of some recent spectra of CH Cyg taken with VHIRES-MO (R=50000) and a 8-inch telescope:

Date: 24.099 / 04 / 2015
Image

Date: 31.081/ 04 / 2015
Image

Date: 4.922 / 04 / 2015 (stack of only 4x600 sec. short for VHIRES)
Image

Date: 5.971 / 04 / 2015 (bad weather)
Image

(note change in He5876 line)

Detail of 6300 A OI line (RV not corrected):

Image
Image
Image
Image

Christian Buil
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Re: Dramatic change of H alpha profile

Postby Tim Lester » Sat Jun 06, 2015 2:38 pm

After posting my animation for the night of June 4th I was worried that possibly the variations were just noise.
To check this I grouped them into 9 4x300 sec spectra to reduce noise and plotted an overlay. Same normalization as before (6600A - 6620A).
It still looks like the complex Ha line may be varying a small amount all the time on a relatively short time scale.

Ch_Cyg_series.png
Ch_Cyg_series.png (9.14 KiB) Viewed 3025 times


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Re: Dramatic change of H alpha profile

Postby Jacques Montier » Mon Jun 08, 2015 2:18 pm

Hello,

Low resolution spectrum of CH Cyg with Alpy 600

20150607_chcyg.png
20150607_chcyg.png (77.34 KiB) Viewed 3057 times


Hight resolution spectrum (Halpha line) with LhiresIII 2400 t/mm

20150607_chcyg_lhires.png
20150607_chcyg_lhires.png (50.52 KiB) Viewed 3057 times


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

Postby umberto sollecchia » Mon Jun 15, 2015 8:29 pm

Bonsoir à tous,voici mon animation où il y avait un effet significatif P-cyg sur le H-bêta de heures 2,35 à 2,43 TU.

@15-06-2015.gif
@15-06-2015.gif (733.27 KiB) Viewed 2953 times


Range H-beta
ch_cyg_hbeta.gif
ch_cyg_hbeta.gif (1.21 MiB) Viewed 2953 times





Cordialement Umberto
umberto sollecchia
 
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Re: Dramatic change of H alpha profile

Postby Jacques Montier » Wed Jun 17, 2015 2:50 pm

Hi all,

CH Cyg profile with Alpy600 on 2015/06/17

20150617_CHCyg_line.png
20150617_CHCyg_line.png (52.76 KiB) Viewed 2915 times



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

Postby umberto sollecchia » Thu Jun 18, 2015 3:11 pm

Salut, je l'ai enregistré un nouvel effet de P-Cyg sur le H-bêta avec une observation dans la nuit du 17 et 18/06/2015 à partir de 22:55 heures à 00:07 heures TU, voici le film.

@17-06-2015.gif
@17-06-2015.gif (317.67 KiB) Viewed 2887 times


@CH Cyg H-beta.gif
@CH Cyg H-beta.gif (317.67 KiB) Viewed 2885 times



Cordialement Umberto
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Re: Dramatic change of H alpha profile

Postby Olivier GARDE » Sun Jun 21, 2015 11:41 am

Fast changes in the spectrum of CH Cyg last night in just 1 hour?

Some animations of 12 spectra of 300s each with eshel spectrograph and RC400 astrosib.

Variation for H Alpha
Image

Variation for H beta
Image

Variation for HeI
Image

Variation of some line on 45 order
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 Joan Guarro Flo » Sun Jun 21, 2015 7:56 pm

Molto buono lavoro, Umberto.

Très bon travail, Olivier.

Félicitations, Congratulazioni,

Joan.
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Re: Dramatic change of H alpha profile

Postby Francois Teyssier » Tue Jun 23, 2015 2:58 pm

Excellent Olivier !
Tu est tombé sur le bon moment.
Je mets la base à jour cette semaine
Amicalement,
François
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Re: Dramatic change of H alpha profile

Postby Olivier GARDE » Wed Jun 24, 2015 4:36 pm

Last night I took about 5 hours of spectra for CH Cyg (180s unit exposure) and a total of more than hundred spectra, but I haven't see any fast change, just some ondulation for the blue part of Halpha.

Image

Olivier
LHIRES III #5, LISA, e-Shel, C14, RC400 Astrosib, AP1600
http://o.garde.free.fr/astro/Spectro1/Bienvenue.html
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