SN 2001ay Ia in IC 4423

OBJ:   SN 2001ay Ia in IC 4423 (it's just designated a galaxy) which in 
         Leda
         is Leda:  IC 4423.
DISCOVERY:  2001apr18.4 UT by Swift & Li 2001.
MAX:  2001apr22 (JD 2452021.5) in B \citet{howell2004}.
           See the US Navy Observatory 
           Julian Date Converter.
           This day of the year 112.
SUPERNOVA of the YEAR:  M = 51.

COMMENT:   This is a broad line SN Ia. 
    

         Spectrum               Date                  Phase relative to Bmax    Observed Wavelength Range
         howell2004             2001apr22?             0. ?                     3807.12--9704.94

REF:
       \citet{conley2006} General value
         of 19.4 days for Ia rise time in B.

       \citet{howell2004} They
       promise a paper with details about SN 2001ay, but they do not seem to have delivered on that.

HEADER: Header Common header information for this supernovae.
        The common header may (or may not) be updated relative to the header information above
        (D. J. Jeffery (2007jan01)).

REP:  F_lambda (erg/cm2/s/A) vs. lambda (ang)  (iformat = 1)
COR:  not deredshifted (heliocentric velocity 9067 +/- 7 km/s from 
         Leda:  IC 4423.
      not dereddened (Galactic foreground 0.08/4=.02 reddening from strolger2002 and not
         Leda
        but derived from
     Schlegel et al. (1998)
      not smoothed ????, not photometric ????
      Derived bolometric maximum is ??? (see above).
OBS:  \citet{howell2004}??.
      Little is known of this spectrum.   It comes from David Branch files.

Date: 2001 with 2001apr22 (JD 2452021.5) for B maximum gives:
      day =  -  = 



&specnamelist
   aname='sn2001ay Ia 2001_04_'
   ebv=.02         ! 
   epoch=          ! This parameter needs to updated for the particular spectrum.
   iformat=1   
   itick=2
   itickln=4
   t_rise=19.4d0   ! \citep{conley2006}, Just an average rise time. 
   v_helio=11,400.
   ymin2=1.d-18
   ymax2=10.d-18
   ymin3=.3
   ymax3=3.
   wlammin1=3800.d0
   wlammax1=
   wlammin2=3800.d0
   wlammax2=
   wlammin3=3800.d0
   wlammax3=
/




      

Postscript plot of the spectrum.




      

Postscript plot of the spectrum with local normalization.





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