59 Cyg

59 Cygni : une étoile Be à suivre

English version

Objectifs et modélisation :

Mesurer l'activité de la raie Hα grâce la valeur de sa largeur équivalente EW.
Elle serait due aux variations du disque en rotation autour de l'étoile de type B(e).
- Qu'est-ce qu'une étoile Be ?
Conditions d'observations :
- Lieu : OVA (Observatoire du Val de l'Arc), Bouches du Rhône, France.
- Observateur : Benjamin Mauclaire.
- Matériel : SCT 12" (0.305 mètres)+spectroscope Lhires3 2400 traits/mm (0.115 Å/pixel)+CCD ethernaude KAF-1602E.
- Logiciels : acquisition et prétraitement avec AudeLA, analyse spectrale avec SpcAudace (AudeLA).

Behaviour analysis at 2010-11-20 :

59 Cyg looks like a quite star. But a small dynamic animation of Halpha line shows a strange activity and how HeI at 6678 Å is dancing:

anim 20101120

What about EW's evolution? Is there any period?
See plot of EW computed between 6535-6595 Å for last 200 days:

ew 20101120

Evolution seems very eratic. So, we still need more measurements.
Be kind enough to send us your spectra to feed 59 Cyg survey page.

JOURNAL D'OBSERVATIONS :

Observation du 30.938/07/2013 :

30.938/07/2013

59_cyg_20130730_938.fit

# JD=2456504.4376.
# EW(60.0=6535.0-6595.0)=-12.02 A.
# sigma(EW)=0.35 A.
# SNR=140.

Observation du 27.937/07/2013 :

27.937/07/2013

59_cyg_20130727_937.fit

# JD=2456501.4371.
# EW(60.0=6535.0-6595.0)=-11.69 A.
# sigma(EW)=0.52 A.
# SNR=93.

Observation du 19.905/08/2012 :

19.905/08/2012

59_cyg_20120819_905.fit

# JD=2456159.4046.
# EW(60.0=6535.0-6595.0)=-8.66 A.
# sigma(EW)=1.89 A.
# SNR=25.

Observation du 15.1000/07/2011 :

15.1000/07/2011

59_cyg_20110715_1000.fit

# JD=2455758.4995.
# EW(60.0=6535.0-6595.0)=-9.22 A.
# sigma(EW)=0.91 A.
# SNR=104.

Observation du 01.836/01/2011 :

01.836/01/2011

59_cyg_20110101_836.fit

# JD=2455563.3364.
# EW(60.0=6535.0-6595.0)=-9.3 A.
# sigma(EW)=0.45 A.
# SNR=208.

Observation du 03.906/12/2010 :

03.906/12/2010

59_cyg_20101203_906.fit

# JD=2455534.406.
# EW(60.0=6535.0-6595.0)=-10.48 A.
# sigma(EW)=0.73 A.
# SNR=132.

Observation du 18.903/11/2010 :

18.903/11/2010

59_cyg_20101118_903.fit

# JD=2455519.4026.
# EW(60.0=6535.0-6595.0)=-10.46 A.
# sigma(EW)=0.44 A.
# SNR=216.

Observation du 11.801/11/2010 :

11.801/11/2010

59_cyg_20101111_801.fit

# JD=2455512.3006.
# EW(60.0=6535.0-6595.0)=-12.31 A.
# sigma(EW)=1.36 A.
# SNR=72.

Observation du 29.934/10/2010 :

29.934/10/2010

59_cyg_20101029_934.fit

# JD=2455499.4342.
# EW(60.0=6535.0-6595.0)=-10.8 A.
# sigma(EW)=1.7 A.
# SNR=57.

Observation du 27.862/10/2010 :

27.862/10/2010

59_cyg_20101027_862.fit

# JD=2455497.3617.
# EW(60.0=6535.0-6595.0)=-10.7 A.
# sigma(EW)=0.38 A.
# SNR=250.

Observation du 25.849/10/2010 :

25.849/10/2010

59_cyg_20101025_849.fit

# JD=2455495.3486.
# EW(60.0=6535.0-6595.0)=-12.86 A.
# sigma(EW)=0.94 A.
# SNR=104.

Observation du 22.865/10/2010 :

22.865/10/2010

59_cyg_20101022_865.fit

# JD=2455492.3645.
# EW(60.0=6535.0-6595.0)=-10.81 A.
# sigma(EW)=0.53 A.
# SNR=182.

Observation du 14.913/10/2010 :

14.913/10/2010

59_cyg_20101014_913.fit

# JD=2455484.4134.
# EW(60.0=6535.0-6595.0)=-11.09 A.
# sigma(EW)=0.58 A.
# SNR=167.

Observation du 06.881/10/2010 :

06.881/10/2010

59_cyg_20101006_881.fit

# JD=2455476.3809.
# EW(60.0=6535.0-6595.0)=-10.67 A.
# sigma(EW)=0.47 A.
# SNR=203.

Observation du 24.974/09/2010 :

24.974/09/2010

59_cyg_20100924_974.fit

# JD=2455464.4737.
# EW(60.0=6535.0-6595.0)=-10.43 A.
# sigma(EW)=0.7 A.
# SNR=137.

Observation du 22.911/09/2010 :

22.911/09/2010

59_cyg_20100922_911.fit

# JD=2455462.4113.
# EW(60.0=6535.0-6595.0)=-9.76 A.
# sigma(EW)=0.48 A.
# SNR=198.

Observation du 11.935/09/2010 :

11.935/09/2010

59_cyg_20100911_935.fit

# JD=2455451.4352.
# EW(60.0=6535.0-6595.0)=-10.1 A.
# sigma(EW)=1.31 A.
# SNR=73.

Observation du 09.185/08/2010 :

09.185/08/2010

59_cyg_20100809_185.fit

# JD=2455417.685.
# EW(60.0=6535.0-6595.0)=-10.73 A.
# sigma(EW)=0.53 A.
# SNR=183.

Observation du 03.978/07/2010 :

03.978/07/2010

59_cyg_20100703.fit

# JD=2455381.4782.
# EW(60.0=6535.0-6595.0)=-11.64 A.
# sigma(EW)=0.9 A.
# SNR=108.

Observation du 26.027/06/2010 :

26.027/06/2010

59_cyg_20100626.fit

# JD=2455373.5271.
# EW(60.0=6535.0-6595.0)=-10.85 A.
# sigma(EW)=0.58 A.
# SNR=167.

Observation du 24.074/06/2010 :

24.074/06/2010

59_cyg_20100624.fit

# JD=2455371.5744.
# EW(60.0=6535.0-6595.0)=-10.87 A.
# sigma(EW)=0.69 A.
# SNR=139.

Observation du 06.104/06/2010 :

06.104/06/2010

59_cyg_20100606.fit

# JD=2455353.6043.
# EW(60.0=6535.0-6595.0)=-10.94 A.
# sigma(EW)=0.46 A.
# SNR=208.

Observation du 12.819/12/2008 :

12.819/12/2008

59_cyg_20081212.fit

# JD=2454813.3185.
# EW(60.0=6535.0-6595.0)=-10.69 A.
# sigma(EW)=1.71 A.
# SNR=56.