From: Don Groom (deg@lbl.gov)
Date: Thu Sep 16 2004 - 17:33:10 PDT
"Example: 92ae. The brightest B point occured on date 8807.82, and
the brightest V point on 8805.83. These were both considered to occur
at date 0 when the joint fit was done, and so the V maximum was
computed incorrectly."
Maybe I misunderstand you, but I don't think that's quite right. snminuit
of its day gave the first lightcurve priority and treated the 2nd as 2nd.
(Most of the I data were crappy, hence the rationale). Of course, you
could tell the code about them in either order; it was color blind.
But then for a *dual* fit, the time came from the first in line, and the
2nd used it. The code understood only that there were a few more
parameters, and treated t0 and s as common to both curves.
D
-- |-+|-+|-+|-+|-+|-+|-+|-+|-+|-+|-+|-+|-+|-+|-+|-+|-+|-+|-+|-+|-+|-+|-+|-+| Don Groom (Particle Data Group, Supernova Cosmology Project) DEGroom(at)lbl(dot)gov www-ccd.lbl.gov 510/486-6788 FAX: 510/486-4799 Analog: 50R6008//1 Cyclotron Road//Berkeley Lab//Berkeley, CA 94720-8166
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