From kawabata@subaru.naoj.org Mon Mar 04 12:07:18 2002 I02ddCAL.xy : Flux data (dd=08, 09, 10, 11; obs date) They are scaled as the flux at 5550A corresponds to the CCD photometry by Lew Cook (VSNET). http://www.astr.tohoku.ac.jp/~kawabata/sn2002/VMAGEST.jpg I have not corrected for strong atmospheric absorption around 6900 and 7600A due to O_2 and interstellar absorption such as Na D. qupt02dd.xy : Polarization data (dd=08, 09, 10) They include lambda(A), q(%), u(%), P(%), theta(deg), Perr. The data are binned to a constant photon noise of Perr = 0.05 %. I ignore the spectropolarimetric data on Feb. 11 because they had much lower S/N than those on other days. quptmean.xy : Polarization data averaged over above three days. In this period, no significant change was seen in polarization properties as seen in the above plot. Data format is same as above files. The data are binned to a constant photon noise of Perr = 0.02 %. I have not corrected for the heliocentric redshift in these data. ************************************************** Perr must stand for photon noise error. I assume no reddening correction either NGC 628 = M74 heliocentric velocity from lines in sn spectra +631 km/s iauc 7822 S. Smartt & P. Meikle from Leda in radio +656 km/s from Leda in optical +639 km/s from Leda mean +656 km/s Foreground extinction in B from Leda/Schlegel 0.30 E(B-V)=.30/4 0.075 E(B-V)=.30/4.1 0.073 See Cardelli p. 249 Paolo E(B-V) 0.08 ********************************************** Polarization This is the 8-9-10 day average lambda(A), q(%), u(%), P(%), theta(deg), Perr. 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6006.23486 113.536003 6012.85498 116.989998 6025.28906 116.999001 6030.90479 114.527 6040.65479 110.948997 6053.44678 112.739998 6062.57324 109.642998 6074.72803 116.188004 6088.50488 115.057999 6101.93408 117.833 6115.83398 115.198997 6129.71777 114.617996 6143.60107 117.266998 6157.5332 113.492996 6171.5 112.025002 6185.40186 112.264 6199.33203 116.091003 6213.22998 115.464996 6227.13086 111.628998 6241.01123 118.100998 6254.91406 119.402 6268.74902 117.694 6282.73193 119.817001 6296.60986 117.667999 6310.49707 118.356003 6324.35986 120.042999 6338.22607 115.061996 6352.0752 118.132004 6365.91992 119.985001 6379.77783 118.877998 6393.68506 113.924004 6407.60596 114.010002 6421.49805 112.795998 6435.37891 119.468002 6449.3042 116.751999 6463.22607 114.149002 6477.14893 113.843002 6491.04395 111.109001 6504.90381 110.989998 6518.81006 111.369003 6532.68799 113.410004 6546.58105 112.833 6560.46924 115.497002 6574.33691 114.750999 6588.24121 115.414001 6602.16895 115.098 6616.07715 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