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 10

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

END:
  4036.31812 -0.465700001
  4228.21924 -0.318100005
  4338.38916 -0.215800002
  4419.16309 -0.357899994
  4479.28076 -0.407200009
  4525.94922 -0.319499999
  4566.34619 -0.291399986
  4606.64209 -0.149499997
  4646.9502 -0.187600002
  4687.38818 -0.327399999
  4728.146 -0.296900004
  4764.65283 -0.289600015
  4789.12305 -0.321700007
  4813.72412 -0.298900008
  4837.43701 -0.212699994
  4857.11719 -0.342500001
  4878.74316 -0.254700005
  4898.021 -0.160500005
  4919.90479 -0.260800004
  4938.83398 -0.324099988
  4961.12012 -0.281199992
  4979.61182 -0.239299998
  5003.04199 -0.364800006
  5021.48193 -0.209199995
  5043.92285 -0.341199994
  5060.53613 -0.210800007
  5074.22705 -0.2227
  5087.89404 -0.181600004
  5101.55713 -0.260899991
  5115.21387 -0.173700005
  5128.88623 -0.246900007
  5142.52881 -0.200200006
  5156.1958 -0.263300002
  5169.87109 -0.139300004
  5183.53076 -0.219099998
  5197.19678 -0.171599999
  5210.86914 -0.392699987
  5224.54297 -0.34040001
  5238.21582 -0.251399994
  5251.89014 -0.186900005
  5265.56885 -0.335500002
  5279.24902 -0.358700007
  5292.91211 -0.198699996
  5306.58301 -0.293799996
  5320.25195 -0.252499998
  5333.9248 -0.407799989
  5347.59619 -0.333000004
  5361.26807 -0.353199989
  5374.93506 -0.34040001
  5388.61279 -0.370299995
  5402.28613 -0.368299991
  5415.95898 -0.326900005
  5429.63281 -0.423900008
  5443.30713 -0.351999998
  5456.97998 -0.312099993
  5470.5752 -0.384600013
  5478.30176 -0.262899995
  5491.99609 -0.307799995
  5505.68506 -0.545899987
  5519.32812 -0.400599986
  5533.00098 -0.396600008
  5546.67676 -0.480199993
  5560.33301 -0.488599986
  5574.00098 -0.370900005
  5587.65918 -0.296299994
  5601.32324 -0.232099995
  5614.97607 -0.387400001
  5628.65479 -0.379000008
  5642.32324 -0.460999995
  5656.00293 -0.311500013
  5669.68604 -0.395700008
  5683.37012 -0.375699997
  5697.05811 -0.386999995
  5710.74121 -0.490099996
  5724.42822 -0.255199999
  5738.09619 -0.560800016
  5751.76904 -0.541499972
  5765.44385 -0.391600013
  5779.10986 -0.386000007
  5792.78418 -0.426600009
  5806.45215 -0.455300003
  5820.12109 -0.448700011
  5833.79102 -0.471100003
  5847.46289 -0.539200008
  5861.14014 -0.41080001
  5874.81592 -0.523299992
  5888.49121 -0.541499972
  5902.16992 -0.463800013
  5915.84521 -0.380400002
  5929.521 -0.500999987
  5943.20215 -0.543299973
  5956.89502 -0.575299978
  5970.61182 -0.559400022
  5984.36621 -0.551699996
  5998.16406 -0.498699993
  6012.01123 -0.442200005
  6028.21484 -0.552399993
  6047.97607 -0.452899992
  6074.56592 -0.485000014
  6102.40088 -0.494100004
  6131.00391 -0.477999985
  6158.76904 -0.459600002
  6186.62305 -0.503899992
  6214.4668 -0.574999988
  6242.2749 -0.199599996
  6269.97607 -0.479600012
  6297.89795 -0.417400002
  6325.6709 -0.314700007
  6353.43018 -0.441100001
  6381.19482 -0.468600005
  6409.02393 -0.464399993
  6436.78906 -0.396100014
  6464.60107 -0.533299983
  6492.43994 -0.524600029
  6520.2168 -0.618399978
  6547.98193 -0.457199991
  6575.76514 -0.406500012
  6603.57812 -0.405000001
  6631.37207 -0.442000002
  6659.16309 -0.357800007
  6686.97998 -0.559099972
  6714.77295 -0.655799985
  6742.56104 -0.505200028
  6770.33887 -0.547100008
  6798.16895 -0.654799998
  6825.96289 -0.611500025
  6853.68311 -0.772599995
  6881.96777 -0.483700007
  6909.58008 -0.791199982
  6937.24023 -0.742399991
  6965.00098 -0.812399983
  6992.7832 -0.565199971
  7020.58691 -0.514800012
  7048.35498 -0.817099988
  7076.16309 -0.584200025
  7104.01123 -0.676199973
  7131.79102 -0.587199986
  7159.51709 -0.709200025
  7187.38623 -0.623899996
  7215.1582 -0.520799994
  7242.96582 -0.650099993
  7270.68701 -0.5995
  7305.3501 -0.773699999
  7346.83496 -0.796400011
  7388.49512 -0.817200005
  7430.22412 -0.88319999
  7478.68604 -0.831499994
  7541.71484 -0.79430002
  7617.64795 -0.59740001
  7688.93213 -0.733900011
  7743.90918 -0.656899989
  7792.31299 -0.59009999
  7833.76807 -0.545599997
  7875.4502 -0.580600023
  7917.16797 -0.505699992
  7958.75879 -0.395099998
  8000.54492 -0.461299986
  8042.12109 -0.477899998
  8083.74512 -0.457800001
  8132.55322 -0.543799996
  8188.29297 -0.421299994
  8244.34668 -0.444400012