2000fr

This supernova was discovered with instrument CFH12K at the time of the countryside of spring 2000 with the CFHT. It was discovered 20 days before its maximum of luminosity in the observant reference frame (either 13 days before its maximum in its reference frame). This made it possible to observe it under excellent conditions with the space telescope Hubble. It thus gained from 6 observations out of I, 5 in R and 2 out of V (B.2 table ).

The spectroscopic identification was obtained thanks to the Fors-1 instrument of the VLT, the redshift was given starting from the lines of its galaxy host (B.1 figure ).

**Appear B.1:** In green, the spectrum of 2000fr in the reference frame of the observer. This spectrum was observed by the VLT with instrument FORS1 on May 4, 2000. The duration is 4800 seconds. Its redshift was estimated by using the lines coming from its galaxy host. In black overprinting, the spectrum of 1990N, supernova observed near 7 days before the maximum.
$\begin{figure}\it\begin{center}\epsfig{file=Images/2000frspectre, width=12cm} \end{center}\end{figure}$

B.1 table: Summary of the observations of 2000fr.

Telescope	Instrument	Go back to observationa	filter	Expositionb	seeingc
CFHT	Cfht12K	51665.50	I	8640	0.81
CFHT	Cfht12K	51642.55	I	7200	0.75
CFHT	Cfht12K	52015.55 $\dag$	I	9900	0.70
CFHT	Cfht12K	52017.39 $\dag$	I	3300	0.77
CFHT	Cfht12K	52018.50 $\dag$	I	2640	0.68
CFHT	Cfht12K	52019.40 $\dag$	I	3300	0.58

aDate Julienne $\dag$ Images of reference without the supernova.

**Appear B.2:** Supernova 2000fr in band I observed by the Hubble telescope on the left and the CFHT on the right, the magnitudes of some objects of the field are presented in B.3 table .
$\begin{figure}\begin{center} \epsfig{file=Images/Star_fid_I_2000fr, width=18cm} \par\end{center}\end{figure}$

B.2 table: Summary of the observations with the space telescope Hubble of 2000fr.

Instrument	Go back to observationa	filtreb	Expositionc
HstWfpc2	51672.36	F814W	2200
HstWfpc2	51679.47	F814W	1200
HstWfpc2	51692.41	F814W	1200
HstWfpc2	51705.70	F814W	800
HstWfpc2	51717.48	F814W	2300
HstWfpc2	51733.29	F814W	2300
HstWfpc2	51679.48	F675W	1200
HstWfpc2	51692.41	F675W	1200
HstWfpc2	51705.76	F675W	1000
HstWfpc2	51717.54	F675W	2400
HstWfpc2	51733.36	F675W	2400
HstWfpc2	51679.49	F555W	1300
HstWfpc2	51692.43	F555W	1300

aDate Julienne $-2\, 400\, 000$ corn name corresponds to the average wavelength of the filter in Nm cen second

B.3 table: Magnitudes of some stars of the field of 2000fr.

Stars	I	R
With	22.02 $\pm$ 0.05	-
B	21.79 $\pm$ 0.05	-
C	19.78 $\pm$ 0.01	-
D	21.04 $\pm$ 0.28	-
E	18.53 $\pm$ 0.01	-
F	20.68 $\pm$ 0.01	-
G	17.72 $\pm$ 0.03	-
H	21.77 $\pm$ 0.07	-
I	21.91 $\pm$ 0.07	-

B.4 table: Curve of light of 2000fr in the band V

Phase $\dag$	V $\ddag$
51679.79(0.01)	22.85(0.03)
51692.72(0.01)	23.37(0.04)

$\ddag$ standard Magnitude in the filter V

B.5 table: Curve of light of 2000fr in the band R

Phase $\dag$	R $\ddag$
51692.41(0.01)	22.53(0.03)
51679.48(0.01)	22.41(0.03)
51692.41(0.01)	22.53(0.03)
51705.75(0.01)	23.37(0.06)
51717.54(0.01)	24.02(0.05)

$\ddag$ standard Magnitude in the filter R

B.6 table: Curve of light of 2000fr in band I

Phase $\dag$	I $\ddag$
51672.36(0.01)	22.66(0.03)
51679.47(0.01)	22.37(0.04)
51692.40(0.01)	22.35(0.03)
51705.70(0.01)	22.77(0.07)
51717.47(0.01)	23.31(0.05)
51665.50(0.01)	23.96(0.07)

$\ddag$ standard Magnitude in filter I aObservations with the CFHT aObservations with HST

**Appear B.3:** Curves of light of 2000fr in standard magnitudes in the filters V, R and I
$\begin{figure}\it\begin{center} \epsfig{file=Images/2000fr_LC_V.eps, width=12cm}... ...sfig{file=Images/2000fr_LC_I.eps, width=12cm}\vskip 2cm \end{center}\end{figure}$

**Appear B.4:** Curves of light of 2000fr in standard fluxes in the filters V, R and I
$\begin{figure}\it\begin{center} \epsfig{file=Images/2000fr_LC_flux_V.eps, width=... ...file=Images/2000fr_LC_flux_I.eps, width=12cm}\vskip 2cm \end{center}\end{figure}$