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
Christian Buil
Posts: 1431
Joined: Mon Sep 26, 2011 6:59 pm
Contact:

Re: Dramatic change of H alpha profile

Post by Christian Buil »

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
Tim Lester
Posts: 168
Joined: Fri Apr 04, 2014 6:31 pm
Location: Arnprior Ontario

Re: Dramatic change of H alpha profile

Post by Tim Lester »

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 8289 times
Tim
Jacques Montier
Posts: 242
Joined: Sun May 13, 2012 2:46 pm

Re: Dramatic change of H alpha profile

Post by Jacques Montier »

Hello,

Low resolution spectrum of CH Cyg with Alpy 600
20150607_chcyg.png
20150607_chcyg.png (77.34 KiB) Viewed 8322 times
Hight resolution spectrum (Halpha line) with LhiresIII 2400 t/mm
20150607_chcyg_lhires.png
20150607_chcyg_lhires.png (50.52 KiB) Viewed 8322 times
Best regards,
--
Jacques Montier
Societe d'Astronomie de Rennes
IAU code J23
umberto sollecchia
Posts: 242
Joined: Tue Dec 30, 2014 3:25 pm

Re: Dramatic change of H alpha profile

Post by umberto sollecchia »

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 8218 times
Range H-beta
ch_cyg_hbeta.gif
ch_cyg_hbeta.gif (1.21 MiB) Viewed 8218 times



Cordialement Umberto
Jacques Montier
Posts: 242
Joined: Sun May 13, 2012 2:46 pm

Re: Dramatic change of H alpha profile

Post by Jacques Montier »

Hi all,

CH Cyg profile with Alpy600 on 2015/06/17
20150617_CHCyg_line.png
20150617_CHCyg_line.png (52.76 KiB) Viewed 8180 times

Cheers,
--
Jacques Montier
Societe d'Astronomie de Rennes
IAU code J23
umberto sollecchia
Posts: 242
Joined: Tue Dec 30, 2014 3:25 pm

Re: Dramatic change of H alpha profile

Post by umberto sollecchia »

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 8152 times
@CH Cyg H-beta.gif
@CH Cyg H-beta.gif (317.67 KiB) Viewed 8150 times

Cordialement Umberto
Olivier GARDE
Posts: 1243
Joined: Thu Sep 29, 2011 6:35 am
Location: Rhône Alpes FRANCE
Contact:

Re: Dramatic change of H alpha profile

Post by Olivier GARDE »

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
Joan Guarro Flo
Posts: 611
Joined: Thu Nov 03, 2011 8:50 pm

Re: Dramatic change of H alpha profile

Post by Joan Guarro Flo »

Molto buono lavoro, Umberto.

Très bon travail, Olivier.

Félicitations, Congratulazioni,

Joan.
Francois Teyssier
Posts: 1520
Joined: Fri Sep 23, 2011 1:01 pm
Location: Rouen
Contact:

Re: Dramatic change of H alpha profile

Post by Francois Teyssier »

Excellent Olivier !
Tu est tombé sur le bon moment.
Je mets la base à jour cette semaine
Amicalement,
François
Olivier GARDE
Posts: 1243
Joined: Thu Sep 29, 2011 6:35 am
Location: Rhône Alpes FRANCE
Contact:

Re: Dramatic change of H alpha profile

Post by Olivier GARDE »

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
Post Reply