Nearby Supernova Factory: Étalonnage des données de SNIFS et ...

tel-00372504, version 1 - 1 Apr 2009
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CHAPTER 2. OBSERVATIONAL COSMOLOGY
U
B
V
R
I
Flux
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-10 0 10 20 30 40
phase
-10 0 10 20 30 40
phase
-10 0 10 20 30 40
phase
-10 0 10 20 30 40
phase
-10 0 10 20 30 40
phase
-10 0 10 20 30 40
phase
(a)
SNLS-03D4ag
52820 52840 52860 52880
MJD
(c)
g
i
r
z
Flux
2000 3000 4000 5000 6000 7000 8000
Wavelength ( Å
Wavelength ( Å
); phase=-10
2000 3000 4000 5000 6000 7000 8000
Wavelength ( Å
); phase=0
2000 3000 4000 5000 6000 7000 8000
Wavelength ( Å
); phase=15
2000 3000 4000 5000 6000 7000 8000
(b)
); phase=30
SNLS-04D3gx
53100 53150
MJD
(d)
53200
Figure 2.11: SALT2 models and results: (a) UBVRI template light curves for x1 of -2,0,2 (dark to light
curves); (b) template spectra for x1 of -2,0,2 (dark to light curves), compared to Nugent et al. (2002)
templates (dashed line); (c)–(d) photometric measurement points for SNLS’ SNe Ia at z = 0.285 and
z = 0.91 respectively, and derived light curves from the SALT2 model. From Guy et al. (2007).
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r
i
z