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Home All issues Volume 496 / No 1 (March II 2009) A&A, 496 1 (2009) 235-247 Full HTML
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Table 2:

Component B: observations log and results in the broadband red filter.
Date Night cc UT Filter $r_{\rm h}$ $\Delta$ PA $\alpha $ Af $\rho_{10 000}$ Af $\rho_{5000}$ Af $\rho_{4000}$ m
2006         (AU) (AU) (deg) (deg) (cm) (cm) (cm)  
Feb. 08 pc n 03:10-03:26 R 1.82 1.10 280.9 27.5 - - - -1.52
Mar. 04 pp n 02:40-03:04 R 1.60 0.73 265.1 25.8 22.1 24.0 24.7 -1.04
Mar. 25 mc y 04:34-04:56 R 1.40 0.47 240.2 25.4 28.0 31.3 32.6 -1.14
Mar. 31 pc y 02:30-02:43 R 1.34 0.40 231.6 26.4 36.8 39.8 40.4 -1.14
Apr. 05 pc y 23:09 R 1.29 0.35 223.2 28.0 327.4 438.2 470.9 -1.63
Apr. 11 mc y 01:40-02:01 R 1.25 0.30 216.5 30.3 224.8 208.7 202.1 -0.96
Apr. 13 mc y 01:52-02:06 R 1.23 0.28 214.1 31.3 147.5 123.6 114.9 -0.86
Apr. 16 pc y 00:33 R 1.20 0.25 211.0 33.2 88.5 76.6 72.6 -0.83
Apr. 26 pp n 01:43-01:59 R 1.12 0.17 205.5 42.2 44.0 46.8 48.2 -1.14
May 02 pp n 02:06-02:17R R 1.08 0.12 209.0 50.9 59.7 59.8 57.9 -0.95
May 08 mc n 04:34-04.35 R 1.04 0.08 224.4 65.9 s s s -1.96
May 09 pc y 04:20-04:27 R 1.03 0.08 228.7 69.4 - 958.9 969.4 -1.01
May 09 pc n 22:26-22:36 R 1.03 0.08 232.2 72.3 - 306.9 300.1 -0.89
May 10 pc n 22:56-23:10 BVRI 1.02 0.07 237.2 76.6 - - - -0.92
May 13 pp n 00:03-00:17 UBVRI 1.01 0.07 246.8 85.9 - 124.4 122.3 -0.92
May 14 pp n 00:43-01:06 UBVRI 1.01 0.07 250.7 90.8 - - 98.8 -0.94
May 16 pc y 02:52-03:03 R 1.00 0.07 255.4 99.9 - 78.7 77.8 -0.90
May 18 pc y 03:20-03:32 R 0.99 0.07 255.9 106.8 - 63.6 62.7 -0.90
May 24 pc y 03:38-03:46 R 0.96 0.11 248.2 114.3 37.8 42.7 45.0 -1.16
May 25 pc n 03:29-03:37 R 0.96 0.11 246.9 114.4 - - - -1.10
Night: mc = mostly clear, pp = partially photometric, pc = partially cloudy; cc: presence (y) or absence (n) of cross-calibration; $r_{\rm h}$ and $\Delta$ are the heliocentric and geocentric distance of the component during the observations, respectively; PA is the position angle of the extended Sun-component radius vector; $\alpha $ is the phase angle Sun-component-observer; Af${\rho }$ values are derived for three photometric circular apertures with radius 10 000, 5000, and 4000 km from the comet's nucleus. Errors on Af${\rho }$ are of the order of 10% and are mainly due to absolute flux calibration errors; m: slope of the linear fit log B vs. log ${\rho }$. Standard deviation of these fits is always lower than 1%. The m value on May 8 was derived discarding the saturated part close to the optocenter of the image; s: saturated image.

Source LaTeX | All tables | In the text

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