Objectifs et modélisation :

• Mesurer l'activité de la raie Hα (grâce la valeur de sa largeur équivalente EW) ainsi que les variations d'intensités et le dédoublement des raies métalliques.
• Les pulsations encore non résolues de la photosphère seraient à l'origine de ces variations.
• 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 (R=15000)+CCD KAF-1603ME (0.115 Å/pixel).
  • Logiciels : acquisition avec AudeLA, prétraitement et analyse spectrale avec SpcAudace (AudeLA).

JOURNAL D'OBSERVATIONS :

Observation du 25.807/10/2017 :

x_cyg_20171025_8071.fit

# JD=2458052.3071.
# EW(10.00=6558.00-6568.00)=1.734 A.
# sigma(EW)=0.201 A.
# SNR=31.

Observation du 20.768/10/2017 :

x_cyg_20171020_7685.fit

# JD=2458047.2685.
# EW(10.00=6558.00-6568.00)=0.830 A.
# sigma(EW)=0.257 A.
# SNR=26.

Observation du 14.883/10/2017 :

x_cyg_20171014_8835.fit

# JD=2458041.3835.
# EW(60.00=6535.00-6595.00)=3.280 A.
# sigma(EW)=1.669 A.
# SNR=24.

Observation du 11.760/10/2017 :

x_cyg_20171011_7595.fit

# JD=2458038.2595.
# EW(60.00=6535.00-6595.00)=-0.028 A.
# sigma(EW)=0.682 A.
# SNR=62.

Observation du 21.888/08/2015 :

x_cygni_20150821_8881.fit

# JD=2457256.3881.
# EW(60.00=6535.00-6595.00)=5.884 A.
# sigma(EW)=2.549 A.
# SNR=15.

Observation du 17.864/08/2015 :

x_cygni_20150817_8643.fit

# JD=2457252.3643.
# EW(60.00=6535.00-6595.00)=4.234 A.
# sigma(EW)=1.650 A.
# SNR=24.

Observation du 14.859/08/2015 :

x_cygni_20150814_8591.fit

# JD=2457249.3591.
# EW(60.00=6535.00-6595.00)=3.864 A.
# sigma(EW)=1.283 A.
# SNR=31.

Observation du 28.888/07/2015 :

x_cygni_20150728_8880.fit

# JD=2457232.3880.
# EW(60.00=6535.00-6595.00)=2.412 A.
# sigma(EW)=1.853 A.
# SNR=22.

Observation du 20.917/07/2015 :

x_cygni_20150720_9173.fit

# JD=2457224.4173.
# EW(60.00=6535.00-6595.00)=3.188 A.
# sigma(EW)=2.635 A.
# SNR=15.

Observation du 19.892/07/2015 :

x_cygni_20150719_8923.fit

# JD=2457223.3923.
# EW(60.00=6535.00-6595.00)=8.964 A.
# sigma(EW)=1.234 A.
# SNR=31.

Observation du 28.822/08/2014 :

x_cyg_20140828_8218.fit

# JD=2456898.3218.
# EW(60.00=6535.00-6595.00)=-3.200 A.
# sigma(EW)=2.667 A.
# SNR=17.

Observation du 27.949/08/2014 :

x_cyg_20140827_9494.fit

# JD=2456897.4494.
# EW(60.00=6535.00-6595.00)=2.383 A.
# sigma(EW)=2.329 A.
# SNR=18.

Observation du 14.851/08/2014 :

x_cyg_20140814_8510.fit

# JD=2456884.3510.
# EW(60.00=6535.00-6595.00)=-0.249 A.
# sigma(EW)=2.869 A.
# SNR=15.

Observation du 05.989/08/2014 :

x_cyg_20140805_9894.fit

# JD=2456875.4894.
# EW(60.00=6535.00-6595.00)=4.588 A.
# sigma(EW)=1.583 A.
# SNR=  25.

Observation du 03.886/08/2014 :

x_cyg_20140803_8860.fit

# JD=2456873.3860.
# EW(60.00=6535.00-6595.00)=3.988 A.
# sigma(EW)=1.079 A.
# SNR=  37.

Observation du 21.746/01/2014 :

x_cyg_20140121_746.fit

# JD=2456679.2460.
# EW(60.00=6535.00-6595.00)=6.987 A.
# sigma(EW)=3.189 A.
# SNR=  12.

Observation du 16.790/12/2013 :

x_cyg_20131216_790.fit

# JD=2456643.2903.
# EW(60.00=6535.00-6595.00)=2.581 A.
# sigma(EW)=1.264 A.
# SNR=  32.

Observation du 14.752/12/2013 :

x_cygni_20131214_752.fit

# JD=2456641.2518.
# EW(60.00=6535.00-6595.00)=1.923 A.
# sigma(EW)=1.783 A.
# SNR=  23.

Observation du 10.804/12/2013 :

x_cygni_20131210_804.fit

# JD=2456637.3036.
# EW(60.00=6535.00-6595.00)=4.635 A.
# sigma(EW)=3.320 A.
# SNR=  12.

Observation du 07.776/12/2013 :

x_cygni_20131207_776.fit

# JD=2456634.2755999998.
# EW(60.0=6535.0-6595.0)=3.7600000000000002 A.
# sigma(EW)=2.27 A.
# SNR=18.

Observation du 03.745/12/2013 :

x_cygni_20131203_745.fit

# JD=2456630.2448.
# EW(60.0=6535.0-6595.0)=-0.65000000000000002 A.
# sigma(EW)=1.78 A.
# SNR=24.

Observation du 01.826/12/2013 :

x_cygni_20131201_826.fit

# JD=2456628.3264000001.
# EW(60.0=6535.0-6595.0)=5.8300000000000001 A.
# sigma(EW)=1.3500000000000001 A.
# SNR=29.

Observation du 29.838/11/2013 :

x_cyg_20131129_838.fit

# JD=2456626.3382.
# EW(60.0=6535.0-6595.0)=-1.51 A.
# sigma(EW)=0.990 A.
# SNR=43.

Observation du 14.856/11/2013 :

x_cygni_20131114_856.fit

# JD=2456611.3560000001.
# EW(60.0=6535.0-6595.0)=5.5899999999999999 A.
# sigma(EW)=0.82000000000000006 A.
# SNR=48.

Observation du 06.888/11/2013 :

x_cygni_20131106_888.fit

# JD=2456603.3875000002.
# EW(60.0=6535.0-6595.0)=-2.5500000000000003 A.
# sigma(EW)=3.48 A.
# SNR=13.

Observation du 31.737/10/2013 :

x_cygni_20131031_737.fit

# JD=2456597.2365000001.
# EW(60.0=6535.0-6595.0)=5.6600000000000001 A.
# sigma(EW)=1.7 A.
# SNR=23.

Observation du 19.824/09/2013 :

x_cygni_20130919_824.fit

# JD=2456555.3234999999.
# EW(60.0=6535.0-6595.0)=5.8700000000000001 A.
# sigma(EW)=1.6100000000000001 A.
# SNR=24.

Observation du 12.806/09/2013 :

x_cygni_20130912_806.fit

# JD=2456548.3056000001.
# EW(60.0=6535.0-6595.0)=5.9400000000000004 A.
# sigma(EW)=1.74 A.
# SNR=23.