Low spectra of CH Cyg and BF Cyg required

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

Low spectra of CH Cyg and BF Cyg required

Postby Francois Teyssier » Wed Apr 15, 2015 5:55 pm

In these two stars appears fast and dramatic evolutions of line profiles

See for example

CHCyg_2015-04-12_2015-04-15.png
CHCyg_2015-04-12_2015-04-15.png (20.08 KiB) Viewed 10418 times


Comment from Augustin Skopal :
I have looked the new spectra of CH Cyg and BF Cyg. Really dramatic
changes in the profiles of Balmer lines on the time-scale of a few days!


Also on BF Cyg

bfcyg_20150323_20150412.png
bfcyg_20150323_20150412.png (19.75 KiB) Viewed 10418 times


Comment from Augustin Skopal :
As concerns to BF Cyg, I was also surprised with changes in the hydrogen
line profiles. At first look the shift to the red seems as a result
of a wrong calibration of the last spectrum from 12/04/2015, but
comparing the 01/04/2015 spectrum to that from 23/03/2015 suggests
that calibration and/or heliocentric correction is O.K. Just significantly
more absorption on the blue side, and more emission on the red side of
the line appeared.


A. Skopal's request :
However, to interpret such variations will not an easy task. Above all,
we need the continuum profile, which is possible to obtain by modelling
the low-resolution spectra. So, I hope that somebody will obtain also
a low-res spectrum (CH Cyg and BF Cyg).


Waiting for spectra,

François Teyssier
Francois Teyssier
 
Posts: 1345
Joined: Fri Sep 23, 2011 1:01 pm
Location: Rouen

Re: Low spectra of CH Cyg and BF Cyg required

Postby Jacques Montier » Mon Apr 20, 2015 1:46 pm

Hello,

Two low resolution (R 600) spectra of CH Cyg and BF Cyg on 20150420

CH Cyg

20150419_chcyg_dbl.png
20150419_chcyg_dbl.png (84.34 KiB) Viewed 10375 times


BF Cyg

20150419_bfcyg_dbl.png
20150419_bfcyg_dbl.png (84.45 KiB) Viewed 10375 times


Cheers,
--
Jacques Montier
Societe d'Astronomie de Rennes
IAU code J23
Jacques Montier
 
Posts: 242
Joined: Sun May 13, 2012 2:46 pm

Re: Low spectra of CH Cyg and BF Cyg required

Postby Jacques Montier » Tue Apr 28, 2015 1:05 pm

CH Cyg on 2015/04/28

20150427_chcyg.png
20150427_chcyg.png (55.27 KiB) Viewed 10336 times


20150428_chcyg_dbl_ech.png
20150428_chcyg_dbl_ech.png (68.07 KiB) Viewed 10336 times



Regards,
--
Jacques Montier
Societe d'Astronomie de Rennes
IAU code J23
Jacques Montier
 
Posts: 242
Joined: Sun May 13, 2012 2:46 pm

Re: Low spectra of CH Cyg and BF Cyg required

Postby Joan Guarro Flo » Wed May 13, 2015 11:07 am

Hi to all:

Two news spectra of the CH Cyg.

Regards, J.G.
Attachments
_chcyg_20150512_101_J. Guarro.png
_chcyg_20150512_101_J. Guarro.png (5.83 KiB) Viewed 10291 times
Joan Guarro Flo
 
Posts: 358
Joined: Thu Nov 03, 2011 8:50 pm

Re: Low spectra of CH Cyg and BF Cyg required

Postby Joan Guarro Flo » Wed May 13, 2015 11:11 am

This is the second.

J.G.
Attachments
_chcyg_20150512_139_J. Guarro.png
_chcyg_20150512_139_J. Guarro.png (7.69 KiB) Viewed 10290 times
Joan Guarro Flo
 
Posts: 358
Joined: Thu Nov 03, 2011 8:50 pm

Re: Low spectra of CH Cyg and BF Cyg required

Postby Joan Guarro Flo » Sat May 16, 2015 3:09 pm

Hi:

CH Cyg, comparison nights 20150512/0516.

Regards, J.Guarro.
Attachments
CH Cyg 20150512-0516.png
CH Cyg 20150512-0516.png (6.63 KiB) Viewed 10240 times
Joan Guarro Flo
 
Posts: 358
Joined: Thu Nov 03, 2011 8:50 pm

Re: Low spectra of CH Cyg and BF Cyg required

Postby Francois Teyssier » Sun May 17, 2015 6:13 pm

Impressive evolution

Spectrum obtained last night :

_chcyg_20150516_945_fteyssie_0.png
_chcyg_20150516_945_fteyssie_0.png (11.58 KiB) Viewed 10220 times


Also, the full spectrum in pdf :http://www.astronomie-amateur.fr/ResultatsSpectro/CHCyg/_chcyg_20150516_945_fteyssier.pdf
Francois Teyssier
 
Posts: 1345
Joined: Fri Sep 23, 2011 1:01 pm
Location: Rouen

Re: Low spectra of CH Cyg and BF Cyg required

Postby Vincent Bouttard » Tue Aug 25, 2015 9:09 pm

Hello,

A low resolution spectrum of CH Cygni on 2015/08/12 (JD 2457247) at the beginning of the OHP worshop 2015.
Setup : Orion 200 F/5 Newtonian + Alpy 600 + Atik 460EX + Takahashi EM-200.

Regards
Vincent
Attachments
CHCyg_JD2457247_2015-08-12_bouttard.png
Low resolution spectrum of CH Cygni on 2015/08/12 (JD 2457247) - Vincent Bouttard
CHCyg_JD2457247_2015-08-12_bouttard.png (17.42 KiB) Viewed 9924 times
VBO @ ARAS database : Newtonian 250 mm F/4 / Alpy600 / Atik 460EX
Vincent Bouttard
 
Posts: 41
Joined: Sun Oct 02, 2011 11:09 am
Location: Colmar (France)

Re: Low spectra of CH Cyg and BF Cyg required

Postby Joan Guarro Flo » Tue Nov 24, 2015 8:33 pm

To All:

Two spectra of CH Cyg.

Regards, J. Guarro.
Attachments
_chcyg_20151122_751_J. Guarro.png
_chcyg_20151122_751_J. Guarro.png (9.03 KiB) Viewed 9787 times
_chcyg_20151123_807_J. Guarro.png
_chcyg_20151123_807_J. Guarro.png (6.63 KiB) Viewed 9787 times
Joan Guarro Flo
 
Posts: 358
Joined: Thu Nov 03, 2011 8:50 pm

Re: Low spectra of CH Cyg and BF Cyg required

Postby etienne bertrand » Tue May 09, 2017 11:29 am

Spectre de CH Cyg acquis en fin de nuit il y a 2 jours, à ma grande surprise le continuum est assez plat jusqu'à 3200A, est ce exploitable ou c'est du bruit ?
Le spectre aussi se relève dans le bleu, est ce normal ?
Image
etienne bertrand
 
Posts: 954
Joined: Mon Aug 31, 2015 11:26 am

Next

Return to CH Cygni

Who is online

Users browsing this forum: No registered users and 1 guest

x