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Home All issues Volume 538 (February 2012) A&A, 538 (2012) A109 Full HTML
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Table 1

Observing characteristics and physical parameters.
November 18 19 20 21 22
B S32.6° S32.6° S32.6° S32.6° S32.6°
L E5.5° W6.3° W20.5° W31.5° W44.1°
μ 0.81 0.81 0.77 0.70 0.58
t0,GB UT 10:23 09:05 09:07 09:05 09:05
t0,SP UT 11:46 09:05 09:07 09:04 09:04
t0,ES UT 10:22 08:59 14:16 09:31 08:47
ASpot  A Mm2 33.8 21.5
vSpot  A km s-1 0.22 ± 0.19 0.15 ± 0.15
0.20 ± 0.25 0.15 ± 0.14
vRing  A km s-1 0.44 ± 0.23 0.37 ± 0.19
km s-1 0.44 ± 0.23 0.38 ± 0.19
|∇v|Ring  A 10-3 s-1 0.83 ± 0.78 0.65 ± 0.54
1.28 ± 1.33 1.13 ± 1.06
ASpot  B Mm2 54.7 21.6 54.2 17.5 2.7 The parameters in the first column of the table refer to heliographic latitude B, heliographic longitude L, cosine of the heliocentric angle μ, start of the G-band (GB), spectro-polarimeter (SP), and echelle spectrograph (ES) observing sequences t0, spot area A, horizontal velocity v, mean divergence |∇v|, number of magnetic elements Nmag. The indices refer to G-band bright points (bp), granulation (gran), magnetic elements (mag), the two sunspots (spot A and spot B), and the four-megameter wide annuli around both spots (ring A and ring B). If two rows are given for a physical parameter, then the top row refers to G-band data, whereas the bottom row was derived from Ca ii H data. If present, the standard deviation refers to the variation in the physical parameters within the specified regions rather than to any formal error.
vSpot  B km s-1 0.22 ± 0.15 0.15 ± 0.15 0.16 ± 0.07 0.18 ± 0.05 0.28 ± 0.06
0.20 ± 0.14 0.11 ± 0.05 0.15 ± 0.08 0.25 ± 0.06 0.37 ± 0.06
vRing  B km s-1 0.31 ± 0.19 0.20 ± 0.12 0.28 ± 0.14 0.25 ± 0.14 0.30 ± 0.09
0.32 ± 0.20 0.20 ± 0.12 0.29 ± 0.15 0.28 ± 0.13 0.40 ± 0.09
|∇v|Ring  B 10-3 s-1 0.63 ± 0.68 0.37 ± 0.36 0.46 ± 0.49 0.47 ± 0.51 0.28 ± 0.33
0.91 ± 1.20 0.47 ± 0.59 0.76 ± 1.04 0.63 ± 0.81 0.44 ± 0.44
Amag Mm2 136.9 83.5 98.9 44.7 22.2
Nmag 10 5 9 6 2
vmag km s-1 0.22 ± 0.12 0.15 ± 0.09 0.16 ± 0.07 0.18 ± 0.05 0.28 ± 0.06
vbp km s-1 0.27 ± 0.19 0.27 ± 0.16 0.28 ± 0.16 0.23 ± 0.12 0.26 ± 0.10
vgran km s-1 0.40 ± 0.24 0.35 ± 0.20 0.37 ± 0.20 0.34 ± 0.19 0.34 ± 0.18
|∇v|gran 10-3 s-1 0.88 ± 0.89 0.72 ± 0.67 0.85 ± 0.79 0.95 ± 0.88 1.04 ± 0.98
|v|mag,LOS km s-1 0.03 ± 0.17 0.02 ± 0.12 0.04 ± 0.20 0.02 ± 0.12 0.00 ± 0.02
|v|bp,LOS km s-1 0.43 ± 0.37 0.44 ± 0.37 0.44 ± 0.38 0.41 ± 0.38 0.34 ± 0.30
|v|gran,LOS km s-1 0.51 ± 0.41 0.50 ± 0.41 0.55 ± 0.45 0.57 ± 0.47 0.55 ± 0.45

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