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  2002 feb 9

lambda(A), q(%), u(%), P(%), theta(deg), Perr.

END:
  4751.5918 -0.276600003
  4832.20312 -0.163200006
  4901.56885 -0.323000014
  4963.69189 -0.224399999
  5019.4082 -0.268900007
  5075.06982 -0.178900003
  5123.52002  0.00590000022
  5165.33887 -0.175400004
  5206.93701 -0.240400001
  5248.50098 -0.274300009
  5290.18701 -0.278899997
  5324.85205 -0.220599994
  5352.66504 -0.270300001
  5380.45996 -0.362300009
  5408.20703 -0.409999996
  5436.00684 -0.35620001
  5463.76611 -0.297699988
  5491.56982 -0.400900006
  5519.3418 -0.358200014
  5547.1792 -0.296200007
  5574.95117 -0.423400015
  5609.55713 -0.272000015
  5651.27295 -0.40200001
  5693.13086 -0.457100004
  5734.9751 -0.481099993
  5776.65186 -0.559199989
  5818.3252 -0.493600011
  5859.96387 -0.521499991
  5901.67578 -0.391900003
  5943.26709 -0.45629999
  5985.05908 -0.343100011
  6026.61816 -0.493000001
  6068.47119 -0.392500013
  6110.20508 -0.381199986
  6151.7998 -0.403299987
  6193.72021 -0.286599994
  6235.43018 -0.379700005
  6277.06201 -0.226899996
  6311.78906 -0.308999985
  6339.5498 -0.272300005
  6367.30615 -0.251100004
  6395.08789 -0.285299987
  6422.90723 -0.202999994
  6450.69189 -0.343499988
  6478.521 -0.457899988
  6506.3042 -0.367700011
  6534.08203 -0.477200001
  6561.8999 -0.327800006
  6589.65381 -0.425300002
  6617.49707 -0.415600002
  6645.27295 -0.317299992
  6673.0708 -0.305299997
  6700.88086 -0.443100005
  6735.54102 -0.405600011
  6777.2041 -0.451299995
  6818.97412 -0.612699986
  6859.729 -0.599799991
  6902.80615 -0.577499986
  6944.18799 -0.516700029
  6985.75781 -0.658999979
  7027.47314 -0.579400003
  7069.13721 -0.585300028
  7110.94287 -0.694899976
  7152.45898 -0.58920002
  7194.32324 -0.710699975
  7235.74414 -0.767199993
  7284.3999 -0.776199996
  7339.69922 -0.959800005
  7401.30518 -0.798099995
  7477.70117 -0.838199973
  7569.29297 -0.61650002
  7686.62305 -0.85710001
  7764.87891 -0.564599991
  7826.92822 -0.491100013
  7882.43799 -0.444299996
  7937.99219 -0.401800007
  7993.56885 -0.375200003
  8055.7002 -0.286500007
  8125.48193 -0.39410001
  8195.33105 -0.438199997
  8265.44141 -0.318899989