2001go

This supernova was discovered at the time of the countryside of spring 2001 with instrument CFH12K with the CFHT. It was detected on April 16, then confirmed on April 20.

Its spectral identification and the measurement of its redshift was obtained thanks to the Fors-1 instrument of the VLT (B.9 B.13 ) at the same time space with 5 points measured in R and I and on the ground with the measurements made with the Fors-1 instruments from the VLT (in R) and SUSI2 of the NTT (in R and I).

Appear B.9: In green, the spectrum of 2001go. This spectrum was taken with the VLT and the spectrograph long slit FORS1 on April 21. The duration is 2400 seconds. The redshift was given by measuring the lines coming from the galaxy host.

B.12 table: Summary of the observations of 2001go.

Telescope	Instrument	Go back to observationa	filter	Expositionb	seeingc
CFHT	Cfht12K	51999.47	I	9900	0.74
CFHT	Cfht12K	52016.49	I	9900	0.72
CFHT	Cfht12K	52020.38	I	2640	0.65
CFHT	Cfht12K	52350.57	I	3600	0.90
CFHT	Cfht12K	52353.55	I	7200	0.80
CFHT	Cfht12K	52377.58	I	3600	0.72
CFHT	Cfht12K	52378.52	I	3600	0.82
CFHT	Cfht12K	52382.52	I	1800	0.83
CFHT	Cfht12K	52385.49	I	1800	0.85
CFHT	Cfht12K	52387.37	I	1800	0.84
CFHT	Cfht12K	52407.29	I	3600	0.71
CFHT	Cfht12K	52413.31	I	1800	0.82
CFHT	Cfht12K	52416.30	I	1800	0.63
NTT	NttSusi	52026.15	I	4800	0.64
NTT	NttSusi	52026.10	R	2400	0.63
VLT	VltFors1	52057.00	R	1199	0.71
VLT	VltFors1	52080.00	R	5399	0.49
CFHT	Cfht12K	52350.60	R	1200	1.01
CFHT	Cfht12K	52353.59	R	2400	0.93
CFHT	Cfht12K	52377.61	R	1200	0.88
CFHT	Cfht12K	52378.55	R	1200	0.87
CFHT	Cfht12K	52382.54	R	600	0.89
CFHT	Cfht12K	52385.51	R	600	0.82
CFHT	Cfht12K	52387.39	R	600	0.83
CFHT	Cfht12K	52407.31	R	1200	0.76
CFHT	Cfht12K	52413.32	R	600	0.79
CFHT	Cfht12K	52416.32	R	600	0.65

aDate Julienne Images of reference without the supernova.

Appear B.10: Supernova 2001go in the band R 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.14 table .

B.13 table: Summary of the observations with the space telescope Hubble of 2001go.

Instrument	Go back to observationa	filtreb	Exposure C
HstWfpc2	52029.76	F814W	2000
HstWfpc2	52037.57	F814W	2400
HstWfpc2	52047.47	F814W	2400
HstWfpc2	52054.09	F814W	2400
HstWfpc2	52065.86	F814W	4800
HstACS	52765.16	F814W	950
HstWfpc2	52029.74	F675W	2200
HstWfpc2	52037.50	F675W	2300
HstWfpc2	52047.40	F675W	2300
HstWfpc2	52054.02	F675W	2300
HstWfpc2	52065.73	F675W	4700
HstACS	52765.10	F625W	950

aDate Julienne second of reference without the supernova.

B.14 table: Magnitudes of some stars of the field of 2001go.

Stars	I	R
With	17.54 $\pm$ 0.02	17.54 $\pm$ 0.02
B	21.05 $\pm$ 0.09	21.05 $\pm$ 0.09
C	18.47 $\pm$ 0.02	18.47 $\pm$ 0.02
D	18.81 $\pm$ 0.01	18.81 $\pm$ 0.01
E	21.08 $\pm$ 0.03	21.08 $\pm$ 0.03
F	19.70 $\pm$ 0.02	19.70 $\pm$ 0.02
G	18.98 $\pm$ 0.01	18.98 $\pm$ 0.01
H	18.51 $\pm$ 0.02	18.51 $\pm$ 0.02
I	21.19 $\pm$ 0.05	21.19 $\pm$ 0.05

B.15 table: Curve of light of 2001go in the band R

Phase	R
52029.74(0.01)	23.21(0.02)23.32
52037.50(0.01)	23.83(0.03)23.88
52047.40(0.01)	24.42(0.05)24.47
52054.03(0.01)	24.70(0.07)
52065.73(0.01)	25.27(0.08)

standard Magnitude in the filter R

B.16 table: Curve of light of 2001go in band I

Phase	I
52029.76(0.01)	22.79(0.03)c
52037.57(0.01)	23.19(0.03)c
52047.47(0.01)	23.51(0.04)c
52054.09(0.01)	23.89(0.06)
52065.86(0.01)	24.45(0.07)
52020.40(0.01)	22.44(0.02)a
52026.10(0.01)	22.55(0.03)b
52016.50(0.01)	22.41(0.02)a
51999.50(0.01)	23.05(0.03)

standard Magnitude in filter I aObservations with the CFHT bObservations with the NTT OBSERVATIONS with HST

Appear B.11: Curves of light of 2001go in standard magnitudes in the filters R and I

Appear B.12: Curves of light of 2001go in standard fluxes in the filters R and I