SN 1988L Ib in NGC 5480 (Sc)


Geoffrey Chaucer with an astrolabe.


OBJ:   SN 1988L Ib in NGC 5480 (Sc).  See
          NGC 5480.
DISCOVERY: 1988apr30 by Berkeley Automated supernova search (Perlmutter & Pennypacker)
        CfA Supernova List.
MAX:  1988apr30 which is just the discovery date  {matheson2001}.  
           This day of the year 120.
SUPERNOVA of the YEAR:  12.

HEADER:  D. J. Jeffery (2006jan01).

REF:

    {matheson2001}
\bibitem[Matheson et al.(2001)]{matheson2001} Matheson, T.,
        Filippenko, A. V., Li, W., Leonard, D. C., \& Shields, J. C.
        2001, \aj, 121, 1648
%
        % ADS Reference
        % optical spectroscopy of type Ib/c supernovae
        % The observational paper with all kinds of spectra reported.
        % They derive R maximum and maxima for some supernovae.


REP:  F_lambda (erg/cm2/s/A) ??? vs. lambda (ang)  (iformat = -1)
COR:  not deredshifted ??? (heliocentric velocity 1851 +/- 8 km/s and 
        v_hel corrected for CMB radiation 1991 km/s from
    NGC 5480.
     But {matheson2001} gives 2050 km/s from a superimposed H II region.
      not dereddened ??? (Galactic foreground .08/4... =.02
     Schlegel et al. (1998).
      not smoothed ????, not photometric ????
      Derived maximum in some band is  (see above).

OBS:  ??? David Branch got these from Alex Filippenko and/or Tom Matheson. 

Date: 1988 () with 1988apr30 (121 which is just the discovery date in a leap year) for visible maximum gives:
      day = - 121 = 


&specnamelist aname='sn1988l Ib 1988_' ebv=.0475 epoch= ! This parameter needs to updated for the particular spectrum. iformat=1 ! This is my first guess, but I'll have to check the spectra against the figures. ! Comparison to the figures shows that the data is f_lambda and it is not redshifted. itick=2 itickln=4 t_rise=20.d0 ! Just the default rise time. v_helio=2050. ! The redshift suggested by \citet{matheson2001} ymin2=.1 ymax2=10. ymin3=.3 ymax3=3. wlammin1= wlammax1= wlammin2= wlammax2= wlammin3= wlammax3= /
./figure/sn1988l_1988_.gif Postscript plot of the spectrum.
./figure/sn1988l_1988_.dif.gif Postscript plot of the spectrum with local normalization.
Information from somewhere. These spectra are from /home/branch/synow/flipIbc/sn1988l END: