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Re: Dramatic change of H alpha profile
Posted: Sat Jun 06, 2015 9:47 am
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
Date: 31.081/ 04 / 2015
Date: 4.922 / 04 / 2015 (stack of only 4x600 sec. short for VHIRES)
Date: 5.971 / 04 / 2015 (bad weather)
(note change in He5876 line)
Detail of 6300 A OI line (RV not corrected):
Christian Buil
Re: Dramatic change of H alpha profile
Posted: Sat Jun 06, 2015 2:38 pm
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 (9.14 KiB) Viewed 10425 times
Tim
Re: Dramatic change of H alpha profile
Posted: Mon Jun 08, 2015 2:18 pm
by Jacques Montier
Hello,
Low resolution spectrum of CH Cyg with Alpy 600
- 20150607_chcyg.png (77.34 KiB) Viewed 10458 times
Hight resolution spectrum (Halpha line) with LhiresIII 2400 t/mm
- 20150607_chcyg_lhires.png (50.52 KiB) Viewed 10458 times
Best regards,
Re: Dramatic change of H alpha profile
Posted: Mon Jun 15, 2015 8:29 pm
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 (733.27 KiB) Viewed 10354 times
Range H-beta
- ch_cyg_hbeta.gif (1.21 MiB) Viewed 10354 times
Cordialement Umberto
Re: Dramatic change of H alpha profile
Posted: Wed Jun 17, 2015 2:50 pm
by Jacques Montier
Hi all,
CH Cyg profile with Alpy600 on 2015/06/17
- 20150617_CHCyg_line.png (52.76 KiB) Viewed 10316 times
Cheers,
Re: Dramatic change of H alpha profile
Posted: Thu Jun 18, 2015 3:11 pm
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 (317.67 KiB) Viewed 10288 times
- @CH Cyg H-beta.gif (317.67 KiB) Viewed 10286 times
Cordialement Umberto
Re: Dramatic change of H alpha profile
Posted: Sun Jun 21, 2015 11:41 am
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
Variation for H beta
Variation for HeI
Variation of some line on 45 order
Re: Dramatic change of H alpha profile
Posted: Sun Jun 21, 2015 7:56 pm
by Joan Guarro Flo
Molto buono lavoro, Umberto.
Très bon travail, Olivier.
Félicitations, Congratulazioni,
Joan.
Re: Dramatic change of H alpha profile
Posted: Tue Jun 23, 2015 2:58 pm
by Francois Teyssier
Excellent Olivier !
Tu est tombé sur le bon moment.
Je mets la base à jour cette semaine
Amicalement,
François
Re: Dramatic change of H alpha profile
Posted: Wed Jun 24, 2015 4:36 pm
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.
Olivier