Epsilon Auriga

Bright stars spectrographic observation series

Epsilon Aurigae
RA: 5H02.0M - DEC: +43°49' (2000,0)

Latest update: October 7, 2010

Instrument: 0.28 m telescope (Celestron 11) + eShel spectrograph (R=11000) + QSI532 CCD camera (CCD KAF3200ME)
Observatory: Castanet-Tolosan (France)
Observer: Christian Buil
Processing: Standard échelle pipeline (Reshel software V1.11). H2O telluric lines removed (division by a synthetic H2O spectrum at the same spectral resolution of the acquired data - the telluric lines list is from GEISA database (LMD/CNRS)). Also, the diurnal and annual earth velocity are corrected - the precision is better 1 km/s. Date are given in UT.

Journal of the observations
(click on the data names for download)

#	JD	FITS format Earth velocity not corrected H2O telluric lines not removed	DAT format Earth velocity corrected H2O telluric lines removed
1	2455033.652	_epsilonaur_20090721_152_full.fit	_epsilonaur_20090721_152.dat
2	2455082.534	_epsilonaur_20090908_034_full.fit	_epsilonaur_20090908_034.dat
3	2455101.617	_epsilonaur_20090927_117_full.fit	_epsilonaur_20090927_117.dat
4	2455108.656	_epsilonaur_20091004_156_full.fit	_epsilonaur_20091004_156.dat
5	2455122.605	_epsilonaur_20091018_105_full.fit	_epsilonaur_20091018_105.dat
6	2455134.467	_epsilonaur_20091029_967_full.fit	_epsilonaur_20091029_967.dat
7	2455148.429	_epsilonaur_20091112_929_full.fit	_epsilonaur_20091112_929.dat
8	2455152.342	_epsilonaur_20091116_842_full.fit	_epsilonaur_20091116_842.dat
9	2455156.357	_epsilonaur_20091120_857_full.fit	_epsilonaur_20091120_857.dat
10	2455158.314	_epsilonaur_20091122_814_full.fit	_epsilonaur_20091122_814.dat
11	2455160.369	_epsilonaur_20091124_869_full.fit	_epsilonaur_20091124_869.dat
12	2455175.301	_epsilonaur_20091209_801_full.fit	_epsilonaur_20091209_801.dat
13	2455183.533	_epsilonaur_20091218_033_full.fit	_epsilonaur_20091218_033.dat
14	2455186.325	_epsilonaur_20091220_825_full.fit	_epsilonaur_20091220_825.dat
15	2455207.240	_epsilonaur_20100110_740_full.fit	_epsilonaur_20100110_740.dat
16	2455208.380	_epsilonaur_20100111_880_full.fit	_epsilonaur_20100111_880.dat
17	2455212.244	_epsilonaur_20100115_744_full.fit	_epsilonaur_20100115_744.dat
18	2455215.344	_epsilonaur_20100118_844_full.fit	_epsilonaur_20100118_844.dat
19	2455219.242	_epsilonaur_20100122_742_full.fit	_epsilonaur_20100122_742.dat
20	2455224.240	_epsilonaur_20100127_740_full.fit	_epsilonaur_20100127_740.dat
21	2455228.293	_epsilonaur_20100131_793_full.fit	_epsilonaur_20100131_793.dat
22	2455230.259	_epsilonaur_20100202_759_full.fit	_epsilonaur_20100202_759.dat
23	2455233.258	_epsilonaur_20100205_758_full.fit	_epsilonaur_20100205_758.dat
24	2455238.333	_epsilonaur_20100210_833_full.fit	_epsilonaur_20100210_833.dat
25	2455247.266	_epsilonaur_20100219_766_full.fit	_epsilonaur_20100219_766.dat
26	2455251.325	_epsilonaur_20100223_825_full.fit	_epsilonaur_20100223_825.dat
27	2455254.272	_epsilonaur_20100226_772_full.fit	_epsilonaur_20100226_772.dat
28	2455257.268	_epsilonaur_20100301_768_full.fit	_epsilonaur_20100301_768.dat
29	2455266.277	_epsilonaur_20100310_777_full.fit	_epsilonaur_20100310_777.dat
30	2455269.277	_epsilonaur_20100313_777_full.fit	_epsilonaur_20100313_777.dat
31	2455271.282	_epsilonaur_20100315_782_full.fit	_epsilonaur_20100315_782.dat
32	2455273.277	_epsilonaur_20100317_777_full.fit	_epsilonaur_20100317_777.dat
33	2455434.563	_epsilonaur_20100826_063_full.fit	_epsilonaur_20100826_063.dat
34	2455439.574	_epsilonaur_20100831_074_full.fit	_epsilonaur_20100831_074.dat
35	2455441.545	_epsilonaur_20100902_045_full.fit	_epsilonaur_20100902_045.dat
36	2455442.556	_epsilonaur_20100903_056_full.fit	_epsilonaur_20100903_056.dat
37	2455443.557	_epsilonaur_20100904_057_full.fit	_epsilonaur_20100904_057.dat
38	2455444.595	_epsilonaur_20100905_095_full.fit	_epsilonaur_20100905_095.dat
39	2455450.541	_epsilonaur_20100911_042_full.fit	_epsilonaur_20100911_042.dat
40	2455453.486	_epsilonaur_20100913_986_full.fit	_epsilonaur_20100913_986.dat
41	2455454.494	_epsilonaur_20100914_994_full.fit	_epsilonaur_20100914_994.dat
42	2455459.487	_epsilonaur_20100919_987_full.fit	_epsilonaur_20100919_987.dat
43	2455460.505	_epsilonaur_20100921_004_full.fit	_epsilonaur_20100921_004.dat
44	2455465.488	_epsilonaur_20100925_987_full.fit	_epsilonaur_20100925_987.dat
45	2455466.566	_epsilonaur_20100927_065_full.fit	_epsilonaur_20100927_065.dat
46	2455468.454	_epsilonaur_20100928_953_full.fit	_epsilonaur_20100928_953.dat
47	2455469.449	_epsilonaur_20100929_948_full.fit	_epsilonaur_20100929_948.dat
48	2455484.386	_epsilonaur_20101014_886_full.fit	_epsilonaur_20101014_886.dat
49	2455485.476	_epsilonaur_20101015_976_full.fit	_epsilonaur_20101015_976.dat
50	2455488.421	_epsilonaur_20101018_921_full.fit	_epsilonaur_20101018_921.dat
51	2455490.502	_epsilonaur_20101021_002_full.fit	_epsilonaur_20101021_002.dat
52	2455491.426	_epsilonaur_20101021_926_full.fit	_epsi lonaur_20101021_926.dat
53	2455495.489	_epsilonaur_20101025_898_full.fit	_epsi lonaur_20101025_898.dat
54	2455496.455	_epsilonaur_20101026_955_full.fit	_epsilonaur_20101026_955.dat
55	2455498.404	_epsilonaur_20101028_904_full.fit	_epsilonaur_20101028_904.dat
56	2455515.636	_epsilonaur_20101108_070_full.fit	_epsilonaur_20101108_070.dat
57	2455517.325	_epsilonaur_20101116_824_full.fit	_epsilonaur_20101116_824.dat
58	2455519.578	_epsilonaur_20101119_078_full.fit	_epsilonaur_20101119_078.dat
59	2455520.510	_epsilonaur_20101120_010_full.fit	_epsilonaur_20101120_010.dat
60	2455524.289	_epsilonaur_20101123_789_full.fit	_epsilonaur_20101123_789_dat
61	2455525.300	_epsilonaur_20101124_800_full.fit	_epsilonaur_20101124_800_dat
62	2455527.297	_epsilonaur_20101126_792_full.fit	_epsilonaur_20101126_792_dat
63	2455531.507	_epsilonaur_20101201_007_full.fit	_epsilonaur_20101201_007_dat
64	2455535.286	_epsilonaur_20101204_786_full.fit	_epsilonaur_20101204_786_dat
65	2455543.394	_epsilonaur_20101212_894_full.fit	_epsilonaur_20101212_894.dat
66	2455544.259	_epsilonaur_20101213_759_full.fit	_epsilonaur_20101213_759.dat
67	2455545.239	_epsilonaur_20101214_739_full.fit	_epsilonaur_20101214_739.dat
68	2455549.224	_epsilonaur_20101218_724_full.fit	_epsilonaur_20101218_724.dat
69	2455550.224	_epsilonaur_20101219_724_full.fit	_epsilonaur_20101219_724.dat
70	2455551.266	_epsilonaur_20101220_766_full.fit	_epsilonaur_20101220_766.dat
71	2455556.356	_epsilonaur_20101225_856_full.fit	_epsilonaur_20101225_856.dat
72	2455571.296	_epsilonaur_20110109_796_full.fit	_epsilonaur_20110109_796.dat
73	2455575.289	_epsilonaur_20110113_789_full.fit	_epsilonaur_20110113_789.dat
74	2455576.249	_epsilonaur_20110114_749_full.fit	_epsilonaur_20110114_749.dat
75	2455577.230	_epsilonaur_20110115_730_full.fit	_epsilonaur_20110115_730.dat
76	2455579.317	_epsilonaur_20110117_817_full.fit	_epsilonaur_20110117_817.dat
77	2455581.410	_epsilonaur_20110119_910_full.fit	_epsilonaur_20110119_910.dat
78	2455582.317	_epsilonaur_20110120_813_full.fit	_epsilonaur_20110120_813.dat
79	2455583.274	_epsilonaur_20110121_774_full.fit	_epsilonaur_20110121_774.dat
80	2455585.282	_epsilonaur_20110123_782_full.fit	_epsilonaur_20110123_782.dat
81	2455586.247	_epsilonaur_20110124_737_full.fit	_epsilonaur_20110124_737.dat
82	2455587.279	_epsilonaur_20110125_779_full.fit	_epsilonaur_20110125_779.dat
83	2455597.284	_epsilonaur_20110204_784_full.fit	_epsilonaur_20110204_784.dat
84	2455598.244	_epsilonaur_20110205_744_full.fit	_epsilonaur_20110205_744.dat
85	2455599.249	_epsilonaur_20110206_746_full.fit	_epsilonaur_20110206_746.dat
86	2455601.264	_epsilonaur_20110208_764_full.fit	_epsilonaur_20110208_764.dat
87	2455603.266	_epsilonaur_20110210_766_full.fit	_epsilonaur_20110210_766.dat
88	2455604.366	_epsilonaur_20110211_766_full.fit	_epsilonaur_20110211_766.dat
89	2455611.256	_epsilonaur_20110218_756_full.fit	_epsilonaur_20110218_756.dat
90	2455613.336	_epsilonaur_20110220_835_full.fit	_epsilonaur_20110220_835.dat
91	2455614.279	_epsilonaur_20110221_778_full.fit	_epsilonaur_20110221_778.dat
92	2455801.622	_epsilonaur_20110828_123_full.fit	_epsilonaur_20110828_123.dat
93	2455813.508	_epsilonaur_20110909_007_full.fit	_epsilonaur_20110909_007.dat
94	2455817.539	_epsilonaur_20110913_039_full.fit	_epsilonaur_20110913_039.dat
95	2455830.497	_epsilonaur_20110925_996_full.fit	_epsilonaur_20110925_996.dat
96	2455840.479	_epsilonaur_20111005_977_full.fit	_epsilonaur_20111005_977.dat

Example of fast Ha evolution.

Dynamic time evolution spectrum near Ha line observed from July 21.5, 2009 to March10.5, 2010. Note Ha V/R ratio evolution and shape changes on the 6497 A line.

High contrast visualisation of the time series spectra centered on 6456 A line (false-colors display).

High contrast visualisation of the time series spectra centered on Hb line (false-colors display).

Time series spectra centered on D1-D2 sodium lines (false-colors display).

3D representation of Ha line evolution (time increase from bottom to top).

3D representation of Ha line evolution (time decrease from bottom to top).

Line profile variability near Ha . The spectra are offset from botton to top according to their acquisition times.

Detail of Ha line activity

Close look of August 31, 2010 spectrum (#34)

Fast evolution

Fast Halpha evolution.

Dynamic spectra visualisation

Halpha animation from JD=2455033 to JD=2455273 (click on the images for display).

Halpha animation from JD=2455435 to JD=2455587 (click on the images for display).

Dynamic spectrum near Halpha line (false-colors representation) from JD=2455435 (bottom) to JD=2455587 (top).
Note the presence of a nearly 86-days pulsation for the F star.

3D Halpha evolution from JD=2455435 to JD=2455587.

Dynamic spectrum around 5650 A wavelength (false-colors representation) from JD=2455435 (bottom) to JD=2455535 (top).

Detail of the very fast Nov. 2010 event on the Ha red wing.

Temporal evolution of Na I (D1 & D2) lines.

Difference 2D time evolution of Na I (D1 & D2) lines for two display contrast.
The image is constructed from the difference of the date spectrum (September 2010 to February 2011) and
a mean spectrum computed with data taken from Sept 5, 2010 to September 20, 2010.

2011 Halpha activity.

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