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Table 1

Log of observations in 2011.

Date (d/m) HJD texp # S/N S/N B Pdet
UT (2 455 000+) (s) (LSD) (G)

HD 130807
23/05 05:23 704.724 4000 1 500 4600 292 ± 26 1.00000 DD
27/05 06:06 708.754 1200 1 520 4800 –94 ± 26 1.00000 DD
28/05 05:58 709.748 6000 2 630 5700 677 ± 21 1.00000 DD
HD 122451
23/05 04:16 704.677 1340 5 1680 33200 –43 ± 20a 1.00000 DD
27/05 05:21 708.723 1200 20 3000 61800 –83 ± 14a 1.00000 DD
28/05 04:34 709.690 1680 14 1260 26000 –66 ± 29a 0.98173 ND
HD 105382
25/05 01:19 706.555 3200 1 990 9650 –622 ± 26 1.00000 DD
26/05 01:59 707.582 4000 1 900 8840 –298 ± 32 1.00000 DD
28/05 00:10 709.506 4800 1 920 8900 –406 ± 32 1.00000 DD

Notes. Columns 1 and 2 give the date, Universal Time (UT) and Heliocentric Julian Date of the observations. Columns 3 and 4 give the total exposure time and the number of polarimetric sequences. Columns 5 and 6 give the peak S/N per CCD pixel (at  ~501 nm for HD 130807 and at  ~518 nm for HD 122451 and HD 105382) in the spectra, and the S/N per 1.4 km s-1(for HD 130807 and HD 105382) and 4.2 km s-1(for HD 122451) pixels in the LSD Stokes V profiles. Columns 7–9 give the longitudinal magnetic field, the magnetic detection probability, and the detection type (see text).

(a)

Those values are for HD 122451 B only.

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