Table 1

Log of the observations. Columns 1 and 2 give the ut date and the Heliocentric Julian Date of the observations. Column 3 gives the total exposure time. Column 4 gives the peak signal-to-noise ratio (at ∼730 nm per 1.8 km s−1 spectral pixel) in the spectra and column 5 gives the signal-to-noise ratio in the LSD Stokes V profiles. Column 6 gives the longitudinal magnetic field, column 7 gives the rotation phase derived in Section 6.2 and columns 8 and 9 give the radial velocities of both components of the system. Column 9 gives the instrument used.

Date ut timeHJD (245 0000+)texp (s)S/NS/N (LSD)B (G)Phasevrad A (km s−1)vrad B (km s−1)Instrument
24/09/04 10:333272.939812004801810−299 ± 890.908.2 ± 0.5−21.1 ± 1.0ESPaDOnS
22/05/05 14:353513.10723600540194091 ± 840.39−19.3 ± 1.11.2 ± 3.6ESPaDOnS
23/05/05 12:223514.01503600420147073 ± 1040.60−19.8 ± 1.02.9 ± 3.5ESPaDOnS
24/05/05 12:093515.006536005602090−262 ± 780.83−19.9 ± 1.00.0 ± 3.4ESPaDOnS
24/05/05 13:113515.049024004701690−376 ± 980.84−20.0 ± 1.00.8 ± 3.4ESPaDOnS
25/05/05 12:153516.010136005201880−411 ± 780.06−19.9 ± 1.00.9 ± 3.3ESPaDOnS
25/05/05 14:023516.051124003001660−306 ± 880.07−20.3 ± 1.0−0.9 ± 3.4ESPaDOnS
20/06/05 13:233542.0596800260840−583 ± 1800.08−21.3 ± 0.92.3 ± 3.1ESPaDOnS
22/06/05 13:433544.0732800240540229 ± 1990.54−21.5 ± 0.91.5 ± 3.0ESPaDOnS
25/06/05 13:423547.0730800280920−378 ± 1880.24−21.2 ± 1.03.0 ± 3.4ESPaDOnS
19/07/05 11:433570.99151200370133037 ± 1180.76−22.6 ± 0.94.7 ± 3.2ESPaDOnS
20/07/05 10:233571.935812005301830−293 ± 900.98−21.6 ± 1.92.9 ± 6.8ESPaDOnS
26/08/05 10:003608.920616006102280156 ± 730.53−23.3 ± 1.05.0 ± 3.4ESPaDOnS
09/06/06 10:393895.944712005501970−404 ± 820.84−20.2 ± 1.01.9 ± 3.2ESPaDOnS
10/06/06 14:313897.105921607802840−383 ± 570.11−19.8 ± 1.00.0 ± 3.2ESPaDOnS
11/06/06 14:033898.086721607102590−24 ± 690.33−20.4 ± 1.04.4 ± 3.2ESPaDOnS
12/06/06 10:303898.938621607602720161 ± 630.53−20.2 ± 0.93.2 ± 3.2ESPaDOnS
13/06/06 10:083899.923124007902780−193 ± 600.76−20.1 ± 0.91.1 ± 2.9ESPaDOnS
13/06/06 10:523899.953824008102930−97 ± 590.77−20.2 ± 0.80.7 ± 2.8ESPaDOnS
14/06/06 15:183901.13878005402000−269 ± 790.04−20.4 ± 1.12.6 ± 3.8ESPaDOnS
15/06/06 15:133902.135218407602820−146 ± 580.27−19.9 ± 1.18.6 ± 4.1ESPaDOnS
16/06/06 15:143903.136517207402700180 ± 640.50−21.5 ± 1.39.3 ± 4.7ESPaDOnS
10/12/06 4:274079.685016003301150−93 ± 1320.29−14.2 ± 0.9−0.5 ± 3.3ESPaDOnS
10/12/06 6:164079.76101600220770−198 ± 1880.31−14.0 ± 1.0−2.7 ± 3.5ESPaDOnS
11/12/06 5:094080.714112004701860320 ± 830.53−13.7 ± 0.9−2.9 ± 3.4ESPaDOnS
11/12/06 5:324080.73021200470180034 ± 850.53−13.9 ± 0.9−3.4 ± 3.2ESPaDOnS
04/03/07 16:004164.163313206002130−198 ± 580.81−9.9 ± 0.8−6.1 ± 3.0ESPaDOnS
24/04/07 4:094214.67082700410146017 ± 950.48−7.3 ± 2.1−10.2 ± 8.2Narval
26/04/07 4:094216.67132500180660−341 ± 1800.94−7.5 ± 2.7−9.3 ± 10.0Narval
26/06/07 12:584278.042424006202280−233 ± 520.12−1.8 ± 1.0−9.1 ± 3.4ESPaDOnS
Date ut timeHJD (245 0000+)texp (s)S/NS/N (LSD)B (G)Phasevrad A (km s−1)vrad B (km s−1)Instrument
24/09/04 10:333272.939812004801810−299 ± 890.908.2 ± 0.5−21.1 ± 1.0ESPaDOnS
22/05/05 14:353513.10723600540194091 ± 840.39−19.3 ± 1.11.2 ± 3.6ESPaDOnS
23/05/05 12:223514.01503600420147073 ± 1040.60−19.8 ± 1.02.9 ± 3.5ESPaDOnS
24/05/05 12:093515.006536005602090−262 ± 780.83−19.9 ± 1.00.0 ± 3.4ESPaDOnS
24/05/05 13:113515.049024004701690−376 ± 980.84−20.0 ± 1.00.8 ± 3.4ESPaDOnS
25/05/05 12:153516.010136005201880−411 ± 780.06−19.9 ± 1.00.9 ± 3.3ESPaDOnS
25/05/05 14:023516.051124003001660−306 ± 880.07−20.3 ± 1.0−0.9 ± 3.4ESPaDOnS
20/06/05 13:233542.0596800260840−583 ± 1800.08−21.3 ± 0.92.3 ± 3.1ESPaDOnS
22/06/05 13:433544.0732800240540229 ± 1990.54−21.5 ± 0.91.5 ± 3.0ESPaDOnS
25/06/05 13:423547.0730800280920−378 ± 1880.24−21.2 ± 1.03.0 ± 3.4ESPaDOnS
19/07/05 11:433570.99151200370133037 ± 1180.76−22.6 ± 0.94.7 ± 3.2ESPaDOnS
20/07/05 10:233571.935812005301830−293 ± 900.98−21.6 ± 1.92.9 ± 6.8ESPaDOnS
26/08/05 10:003608.920616006102280156 ± 730.53−23.3 ± 1.05.0 ± 3.4ESPaDOnS
09/06/06 10:393895.944712005501970−404 ± 820.84−20.2 ± 1.01.9 ± 3.2ESPaDOnS
10/06/06 14:313897.105921607802840−383 ± 570.11−19.8 ± 1.00.0 ± 3.2ESPaDOnS
11/06/06 14:033898.086721607102590−24 ± 690.33−20.4 ± 1.04.4 ± 3.2ESPaDOnS
12/06/06 10:303898.938621607602720161 ± 630.53−20.2 ± 0.93.2 ± 3.2ESPaDOnS
13/06/06 10:083899.923124007902780−193 ± 600.76−20.1 ± 0.91.1 ± 2.9ESPaDOnS
13/06/06 10:523899.953824008102930−97 ± 590.77−20.2 ± 0.80.7 ± 2.8ESPaDOnS
14/06/06 15:183901.13878005402000−269 ± 790.04−20.4 ± 1.12.6 ± 3.8ESPaDOnS
15/06/06 15:133902.135218407602820−146 ± 580.27−19.9 ± 1.18.6 ± 4.1ESPaDOnS
16/06/06 15:143903.136517207402700180 ± 640.50−21.5 ± 1.39.3 ± 4.7ESPaDOnS
10/12/06 4:274079.685016003301150−93 ± 1320.29−14.2 ± 0.9−0.5 ± 3.3ESPaDOnS
10/12/06 6:164079.76101600220770−198 ± 1880.31−14.0 ± 1.0−2.7 ± 3.5ESPaDOnS
11/12/06 5:094080.714112004701860320 ± 830.53−13.7 ± 0.9−2.9 ± 3.4ESPaDOnS
11/12/06 5:324080.73021200470180034 ± 850.53−13.9 ± 0.9−3.4 ± 3.2ESPaDOnS
04/03/07 16:004164.163313206002130−198 ± 580.81−9.9 ± 0.8−6.1 ± 3.0ESPaDOnS
24/04/07 4:094214.67082700410146017 ± 950.48−7.3 ± 2.1−10.2 ± 8.2Narval
26/04/07 4:094216.67132500180660−341 ± 1800.94−7.5 ± 2.7−9.3 ± 10.0Narval
26/06/07 12:584278.042424006202280−233 ± 520.12−1.8 ± 1.0−9.1 ± 3.4ESPaDOnS
Table 1

Log of the observations. Columns 1 and 2 give the ut date and the Heliocentric Julian Date of the observations. Column 3 gives the total exposure time. Column 4 gives the peak signal-to-noise ratio (at ∼730 nm per 1.8 km s−1 spectral pixel) in the spectra and column 5 gives the signal-to-noise ratio in the LSD Stokes V profiles. Column 6 gives the longitudinal magnetic field, column 7 gives the rotation phase derived in Section 6.2 and columns 8 and 9 give the radial velocities of both components of the system. Column 9 gives the instrument used.

Date ut timeHJD (245 0000+)texp (s)S/NS/N (LSD)B (G)Phasevrad A (km s−1)vrad B (km s−1)Instrument
24/09/04 10:333272.939812004801810−299 ± 890.908.2 ± 0.5−21.1 ± 1.0ESPaDOnS
22/05/05 14:353513.10723600540194091 ± 840.39−19.3 ± 1.11.2 ± 3.6ESPaDOnS
23/05/05 12:223514.01503600420147073 ± 1040.60−19.8 ± 1.02.9 ± 3.5ESPaDOnS
24/05/05 12:093515.006536005602090−262 ± 780.83−19.9 ± 1.00.0 ± 3.4ESPaDOnS
24/05/05 13:113515.049024004701690−376 ± 980.84−20.0 ± 1.00.8 ± 3.4ESPaDOnS
25/05/05 12:153516.010136005201880−411 ± 780.06−19.9 ± 1.00.9 ± 3.3ESPaDOnS
25/05/05 14:023516.051124003001660−306 ± 880.07−20.3 ± 1.0−0.9 ± 3.4ESPaDOnS
20/06/05 13:233542.0596800260840−583 ± 1800.08−21.3 ± 0.92.3 ± 3.1ESPaDOnS
22/06/05 13:433544.0732800240540229 ± 1990.54−21.5 ± 0.91.5 ± 3.0ESPaDOnS
25/06/05 13:423547.0730800280920−378 ± 1880.24−21.2 ± 1.03.0 ± 3.4ESPaDOnS
19/07/05 11:433570.99151200370133037 ± 1180.76−22.6 ± 0.94.7 ± 3.2ESPaDOnS
20/07/05 10:233571.935812005301830−293 ± 900.98−21.6 ± 1.92.9 ± 6.8ESPaDOnS
26/08/05 10:003608.920616006102280156 ± 730.53−23.3 ± 1.05.0 ± 3.4ESPaDOnS
09/06/06 10:393895.944712005501970−404 ± 820.84−20.2 ± 1.01.9 ± 3.2ESPaDOnS
10/06/06 14:313897.105921607802840−383 ± 570.11−19.8 ± 1.00.0 ± 3.2ESPaDOnS
11/06/06 14:033898.086721607102590−24 ± 690.33−20.4 ± 1.04.4 ± 3.2ESPaDOnS
12/06/06 10:303898.938621607602720161 ± 630.53−20.2 ± 0.93.2 ± 3.2ESPaDOnS
13/06/06 10:083899.923124007902780−193 ± 600.76−20.1 ± 0.91.1 ± 2.9ESPaDOnS
13/06/06 10:523899.953824008102930−97 ± 590.77−20.2 ± 0.80.7 ± 2.8ESPaDOnS
14/06/06 15:183901.13878005402000−269 ± 790.04−20.4 ± 1.12.6 ± 3.8ESPaDOnS
15/06/06 15:133902.135218407602820−146 ± 580.27−19.9 ± 1.18.6 ± 4.1ESPaDOnS
16/06/06 15:143903.136517207402700180 ± 640.50−21.5 ± 1.39.3 ± 4.7ESPaDOnS
10/12/06 4:274079.685016003301150−93 ± 1320.29−14.2 ± 0.9−0.5 ± 3.3ESPaDOnS
10/12/06 6:164079.76101600220770−198 ± 1880.31−14.0 ± 1.0−2.7 ± 3.5ESPaDOnS
11/12/06 5:094080.714112004701860320 ± 830.53−13.7 ± 0.9−2.9 ± 3.4ESPaDOnS
11/12/06 5:324080.73021200470180034 ± 850.53−13.9 ± 0.9−3.4 ± 3.2ESPaDOnS
04/03/07 16:004164.163313206002130−198 ± 580.81−9.9 ± 0.8−6.1 ± 3.0ESPaDOnS
24/04/07 4:094214.67082700410146017 ± 950.48−7.3 ± 2.1−10.2 ± 8.2Narval
26/04/07 4:094216.67132500180660−341 ± 1800.94−7.5 ± 2.7−9.3 ± 10.0Narval
26/06/07 12:584278.042424006202280−233 ± 520.12−1.8 ± 1.0−9.1 ± 3.4ESPaDOnS
Date ut timeHJD (245 0000+)texp (s)S/NS/N (LSD)B (G)Phasevrad A (km s−1)vrad B (km s−1)Instrument
24/09/04 10:333272.939812004801810−299 ± 890.908.2 ± 0.5−21.1 ± 1.0ESPaDOnS
22/05/05 14:353513.10723600540194091 ± 840.39−19.3 ± 1.11.2 ± 3.6ESPaDOnS
23/05/05 12:223514.01503600420147073 ± 1040.60−19.8 ± 1.02.9 ± 3.5ESPaDOnS
24/05/05 12:093515.006536005602090−262 ± 780.83−19.9 ± 1.00.0 ± 3.4ESPaDOnS
24/05/05 13:113515.049024004701690−376 ± 980.84−20.0 ± 1.00.8 ± 3.4ESPaDOnS
25/05/05 12:153516.010136005201880−411 ± 780.06−19.9 ± 1.00.9 ± 3.3ESPaDOnS
25/05/05 14:023516.051124003001660−306 ± 880.07−20.3 ± 1.0−0.9 ± 3.4ESPaDOnS
20/06/05 13:233542.0596800260840−583 ± 1800.08−21.3 ± 0.92.3 ± 3.1ESPaDOnS
22/06/05 13:433544.0732800240540229 ± 1990.54−21.5 ± 0.91.5 ± 3.0ESPaDOnS
25/06/05 13:423547.0730800280920−378 ± 1880.24−21.2 ± 1.03.0 ± 3.4ESPaDOnS
19/07/05 11:433570.99151200370133037 ± 1180.76−22.6 ± 0.94.7 ± 3.2ESPaDOnS
20/07/05 10:233571.935812005301830−293 ± 900.98−21.6 ± 1.92.9 ± 6.8ESPaDOnS
26/08/05 10:003608.920616006102280156 ± 730.53−23.3 ± 1.05.0 ± 3.4ESPaDOnS
09/06/06 10:393895.944712005501970−404 ± 820.84−20.2 ± 1.01.9 ± 3.2ESPaDOnS
10/06/06 14:313897.105921607802840−383 ± 570.11−19.8 ± 1.00.0 ± 3.2ESPaDOnS
11/06/06 14:033898.086721607102590−24 ± 690.33−20.4 ± 1.04.4 ± 3.2ESPaDOnS
12/06/06 10:303898.938621607602720161 ± 630.53−20.2 ± 0.93.2 ± 3.2ESPaDOnS
13/06/06 10:083899.923124007902780−193 ± 600.76−20.1 ± 0.91.1 ± 2.9ESPaDOnS
13/06/06 10:523899.953824008102930−97 ± 590.77−20.2 ± 0.80.7 ± 2.8ESPaDOnS
14/06/06 15:183901.13878005402000−269 ± 790.04−20.4 ± 1.12.6 ± 3.8ESPaDOnS
15/06/06 15:133902.135218407602820−146 ± 580.27−19.9 ± 1.18.6 ± 4.1ESPaDOnS
16/06/06 15:143903.136517207402700180 ± 640.50−21.5 ± 1.39.3 ± 4.7ESPaDOnS
10/12/06 4:274079.685016003301150−93 ± 1320.29−14.2 ± 0.9−0.5 ± 3.3ESPaDOnS
10/12/06 6:164079.76101600220770−198 ± 1880.31−14.0 ± 1.0−2.7 ± 3.5ESPaDOnS
11/12/06 5:094080.714112004701860320 ± 830.53−13.7 ± 0.9−2.9 ± 3.4ESPaDOnS
11/12/06 5:324080.73021200470180034 ± 850.53−13.9 ± 0.9−3.4 ± 3.2ESPaDOnS
04/03/07 16:004164.163313206002130−198 ± 580.81−9.9 ± 0.8−6.1 ± 3.0ESPaDOnS
24/04/07 4:094214.67082700410146017 ± 950.48−7.3 ± 2.1−10.2 ± 8.2Narval
26/04/07 4:094216.67132500180660−341 ± 1800.94−7.5 ± 2.7−9.3 ± 10.0Narval
26/06/07 12:584278.042424006202280−233 ± 520.12−1.8 ± 1.0−9.1 ± 3.4ESPaDOnS
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