J/A+A/523/A7 Light curves of type Ia supernovae in SNLS (Guy+, 2010)
The Supernova Legacy Survey 3-year sample: Type Ia Supernovae photometric
distances and cosmological constraints.
Guy J., Sullivan M., Conley A., Regnault N., Astier P., Balland C., Basa S.,
Carlberg R.G., Fouchez D., Hardin D., Hook I.M., Howell D.A., Pain R.,
Palanque-Delabrouille N., Perrett K.M., Pritchet C.J., Rich J.,
Ruhlmann-Kleider V., Balam D., Baumont S., Ellis R.S., Fabbro S.,
Fakhouri H.K., Fourmanoit N., Gonzalez-Gaitan S., Graham M.L., Hsiao E.,
Kronborg T., Lidman C., Mourao A.M., Perlmutter S., Ripoche P., Suzuki N.,
Walker E.S.
<Astron. Astrophys. 523, A7 (2010)>
=2010A&A...523A...7G 2010A&A...523A...7G
ADC_Keywords: Supernovae ; Photometry, ugriz ; Redshifts
Keywords: supernovae: general - cosmology: observations
Abstract:
We present photometric properties and distance measurements of 252
high redshift Type Ia supernovae (0.15<z<1.1) discovered during
the first three years of the Supernova Legacy Survey (SNLS). These
events were detected and their multi-colour light curves measured
using the MegaPrime/MegaCam instrument at the Canada-France-Hawaii
Telescope (CFHT), by repeatedly imaging four one-square degree fields
in four bands. Follow-up spectroscopy was performed at the VLT, Gemini
and Keck telescopes to confirm the nature of the supernovae and to
measure their redshifts.
Description:
The following files contain the Type Ia supernovae light curves of
the Supernova Legacy Survey 3-year sample and the parameters needed
to estimate luminosity distances: the apparent rest-frame B-band
magnitude at maximum light, a shape parameter (stretch factor or X1)
and a colour that approximately corresponds to the rest-frame B-V
colour (plus a constant offset) at maximum light in B-band. Those
parameters were obtained with two light curve fitters: SALT2
(Guy et al., 2007A&A...466...11G 2007A&A...466...11G) and SiFTO (Conley et al.,
2008ApJ...681..482C 2008ApJ...681..482C). The light curves are in the magnitude system
defined in Regnault et al. (2009, Cat. J/A+A/506/999). Fluxes and
uncertainties are given for a fiducial zero point of 30, a magnitude
is mag=-2.5log10(Flux)+30. An additional table that is not in the
paper gives the approximate coordinates of SNe images in MegaCam focal
plane. They are needed to estimate the filter transmission function.
This data can also be downloaded at the University of Toronto's
Research Repository
https://tspace.library.utoronto.ca/handle/1807/24512
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table9.dat 140 285 List of SNLS 3 years type Ia supernova sample
with coordinates of SNe in focal plane
table11.dat 212 277 SALT2 and SiFTO light curve parameters
table10.dat 40 23726 griz light curves of 281 SNLS SNe Ia/Ia*
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See also:
J/A+A/506/999 : Photometric Calibration of SNLS (Regnault+, 2009)
J/MNRAS/406/782 : Type Ia supernovae luminosities (Sullivan+, 2010)
Byte-by-byte Description of file: table9.dat
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Bytes Format Units Label Explanations
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1- 6 A6 --- SNLS SN name ( in Simbad)
8- 9 I2 h RAh Right ascension (J2000)
11- 12 I2 min RAm Right ascension (J2000)
14- 19 F6.3 s RAs Right ascension (J2000)
21 A1 --- DE- Declination sign (J2000)
22- 23 I2 deg DEd Declination (J2000)
25- 26 I2 arcmin DEm Declination (J2000)
28- 33 F6.3 arcsec DEs Declination (J2000)
35- 38 I4 d Date1 First observation date, JD-2450000
39- 48 A10 d Dates Following observation date(s), JD-2450000
50- 63 A14 --- Tel Telescopes
65- 74 A10 --- Type SN type
76- 81 F6.4 --- z Redshift (spectroscoic)
83- 88 F6.4 --- e_z Uncertainty on redshift
90 A1 --- r_z [HS] Source of z: S for SN, H for host
92-104 A13 --- Ref References for spectroscopy (1)
106-110 F5.3 --- E(B-V) Milky Way E(B-V)
112-115 A4 --- Phot [griz none] Photometric observations (band)
117 A1 --- f_Phot [abcs] Photometry problem (2)
120-129 F10.6 cm xf x coordinate of SN in focal plane
131-140 F10.6 cm yf y coordinate of SN in focal plane
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Note (1): References as follows:
Ba09 = Ballan et al., 2009, Cat. J/A+A/507/85
Br08 = Bronder et al., 2008, Cat. J/A+A/477/717
E08 = Ellis et al., 2008ApJ...674...51E 2008ApJ...674...51E
Fa10 = Fabro et al. 2010. in prep
H05 = Howell et al., 2005ApJ...634.1190H 2005ApJ...634.1190H
W10 = Walker et al. 2010, in prep
Note (2): Note as follows:
a = no photometry because of variable host or second SN in host
b = close to a bright star
c = edge of field
s = missing epochs for light curve fit
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Byte-by-byte Description of file: table11.dat
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Bytes Format Units Label Explanations
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1- 6 A6 --- SNLS SN name ( in Simbad)
8- 14 F7.4 --- z Heliocentric redshift
16- 25 F10.6 mag mb.S2 SALT2 rest-frame B-band magnitude
27- 36 F10.7 mag e_mb.S2 Statistical uncertainty on mb.S2
38- 47 F10.7 mag x1.S2 SALT2 shape parameter x1
49- 58 F10.7 mag e_x1.S2 Statistical uncertainty on x1.S2
60- 69 F10.7 mag c.S2 SALT2 colour parameter
71- 80 F10.7 mag e_c.S2 Statistical uncertainty on c.S2
82- 91 F10.7 --- cov(mb,x1)S2 SALT2 covariance of mb and x1
93-102 F10.7 --- cov(mb,c)S2 SALT2 covariance of mb and c
104-113 F10.7 --- cov(x1,c)S2 SALT2 covariance of x1 and c
115-124 F10.6 mag mb.Si SiFTO rest-frame B-band magnitude
126-135 F10.7 mag e_mb.Si Statistical uncertainty on mb.Si
137-146 F10.7 --- s.Si SiFTO stretch factor
148-157 F10.7 --- e_s.Si Statistical uncertainty on s.Si
159-168 F10.7 mag c.Si SiFTO colour parameter
170-179 F10.7 mag e_c.Si Statistical uncertainty on c.Si
181-190 F10.7 --- cov(mb,s)Si SiFTO covariance of mb and s
192-201 F10.7 --- cov(mb,c)Si SiFTO covariance of mb and c
203-212 F10.7 --- cov(s,c)Si SiFTO covariance of s and c
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Byte-by-byte Description of file: table10.dat
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Bytes Format Units Label Explanations
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1- 6 A6 --- SNLS SN name ( in Simbad)
8 A1 --- Band [griz] MegaCam pass-band
10- 17 F8.2 d MJD Modified Julian date
19- 29 E11.5 ct Flux Flux in band (1)
31- 40 E10.5 ct e_Flux Statistical uncertainty on Flux
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Note (1): SNLS magnitude = -2.5log(Flux)+30.
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Acknowledgements:
J. Guy, guy(at)lpnhe.in2p3.fr
(End) Patricia Vannier [CDS] 20-Jul-2010