J/MNRAS/410/1262 Supernova Legacy Survey. Type Ia supernovae (Walker+, 2011)
Supernova Legacy Survey: using spectral signatures to improve Type Ia supernovae
as distance indicators.
Walker E.S., Hook I.M., Sullivan M., Howell D.A., Astier P., Balland C.,
Basa S., Bronder T.J., Carlberg R., Conley A., Fouchez D., Guy J.,
Hardin D., Pain R., Perrett K., Pritchet C., Regnault N., Rich J.,
Aldering G., Fakhouri H.K., Kronborg T., Palanque-Delabrouille N.,
Perlmutter S., Ruhlmann-Kleider V., Zhang T.
<Mon. Not. R. Astron. Soc., 410, 1262-1282 (2011)>
=2011MNRAS.410.1262W 2011MNRAS.410.1262W
ADC_Keywords: Supernovae ; Redshifts ; Equivalent widths
Keywords: cosmology: observations - supernovae: general
Abstract:
Optical long-slit spectroscopy at the Gemini-North telescope using the
Gemini Multi-Object Spectrograph (GMOS) was used to classify targets
from the Supernova Legacy Survey (SNLS) from 2005 July and 2006
May-2008 May. During this time, 95 objects were observed. Where
possible, the objects' redshifts (z) were measured from narrow
emission or absorption features in the host galaxy spectrum, otherwise
they were measured from the broader supernova features. We present
spectra of 68 confirmed or probable SNe Ia from SNLS with redshifts in
the range 0.17≤z≤1.02.
Description:
The targets were selected from real-time SNLS imaging which took place
at the Canada-France-Hawaii Telescope (CFHT). Fainter objects were
usually observed spectroscopically at Gemini, with brighter candidates
at either VLT or Keck.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tablea1.dat 65 158 Table of observations
tablea2.dat 35 95 Classifications and redshifts
tablea3.dat 46 26 EW results for objects presented in this paper
tablea4.dat 46 56 EW results for the Bronder sample
tablea5.dat 46 67 EW results for the VLT sample
tablea6.dat 63 23 Photometric properties of the low-z sample
fitted using SiFTO
tablea7.dat 36 150 EW measurements for the low-z spectra
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See also:
J/A+A/477/717 : Spectroscopy of Type Ia supernovae (Bronder+, 2008)
J/A+A/506/999 : Photometric Calibration of SNLS (Regnault+, 2009)
J/A+A/523/A7 : Light curves of type Ia supernovae in SNLS (Guy+, 2010)
J/ApJS/192/1 : Light-curve parameters from the SNLS (Conley+, 2011)
Byte-by-byte Description of file: tablea1.dat
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Bytes Format Units Label Explanations
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1- 6 A6 --- SN SN name (NNAnaa)
8 I1 --- n_SN [3/5]? Note (1)
10- 11 I2 h RAh Right ascension (J2000)
13- 14 I2 min RAm Right ascension (J2000)
16- 21 F6.3 s RAs Right ascension (J2000)
23 A1 --- DE- Declination sign (J2000)
24- 25 I2 deg DEd Declination (J2000)
27- 28 I2 arcmin DEm Declination (J2000)
30- 34 F5.2 arcsec DEs Declination (J2000)
36- 45 A10 "YYYY-MM-DD" Date Observation date
47- 50 I4 s ExpTime Exposure time
52- 54 A3 --- Mode Mode (2)
56- 58 I3 nm lambda ? Central wavelength
60- 63 F4.2 arcsec Seeing ? Seeing
65 A1 --- n_Seeing [2] 2 if measured using IMEXAM, else
measured using GEMSEEING
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Note (1): Note on SN as follows:
3 = R150 observation
4 = Second night of data only used
5 = First night of data only used
Note (2): N&S refer to Glazebrook K., Bland-Hawthorn J. (2001PASP..113..197G 2001PASP..113..197G),
B&S is unexplained (typo?) and C (?).
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Byte-by-byte Description of file: tablea2.dat
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Bytes Format Units Label Explanations
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1- 6 A6 --- SN SN name (NNAnaa)
8- 12 A5 --- Type SN type (1)
14- 19 F6.4 --- z ?=- Redshift
21- 26 F6.4 --- e_z ?=- rms uncertainty on z
28 I1 --- q_Type [0/5] Confidence index (2)
30- 35 A6 --- n_z Redshift Source (target or host)
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Note (1): details in section 2.3. Classes are SNIa (certain or highly
probable Ia), SNIa? (probable Ia), SNII (SN Type II), SN (supernova
of unknown type) or SN? (probable SN of un- known type).
Note (2): Confidence index with 5 being a definite Ia and 0 definitely not.
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Byte-by-byte Description of file: tablea3.dat tablea4.dat tablea5.dat
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Bytes Format Units Label Explanations
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1- 6 A6 --- SN SN name (NNAnaa)
7 A1 --- n_SN [*] * indicates objects removed from
further analysis
9- 14 F6.2 0.1nm W(CaII) ?=- CaII equivalent width
16- 20 F5.2 0.1nm e_W(CaII) ?=- rms uncertainty on W(CaII)
22- 27 F6.3 0.1nm W(SiII) ?=- SiII equivalent width
29- 33 F5.2 0.1nm e_W(SiII) ?=- rms uncertainty on W(SiII)
35- 40 F6.2 0.1nm W(MgII) ?=- MgII equivalent width
42- 46 F5.2 0.1nm e_W(MgII) ?=- rms uncertainty on W(MgII)
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Byte-by-byte Description of file: tablea6.dat
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Bytes Format Units Label Explanations
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1- 2 A2 --- --- [SN]
4- 9 A6 --- SN SN name (YYYYaa)
11- 15 F5.3 --- z Redshift relative to CMB
17- 21 F5.3 --- Stretch light curve stretch
23- 27 F5.3 --- e_Stretch rms uncertainty on Stretch
29- 34 F6.3 mag Col Colour
36- 40 F5.3 mag e_Col rms uncertainty on Col
42- 46 F5.2 mag Bmag B magnitude at date of maximum
48- 51 F4.2 mag e_Bmag rms uncertainty on Bmag
53- 57 F5.2 mag Dist ?=- Independent distance modulus
59- 62 F4.2 mag e_Dist ?=- rms uncertainty on Dist
63 A1 --- r_Dist [ab] Distance reference (1)
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Note (1): Distance reference as follows:
a = Saha et al. (2006ApJS..165..108S 2006ApJS..165..108S)
b = Ajhar et al. (2001ApJ...559..584A 2001ApJ...559..584A)
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Byte-by-byte Description of file: tablea7.dat
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Bytes Format Units Label Explanations
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1- 2 A2 --- --- [SN]
4- 9 A6 --- SN SN name (YYYYaa)
11- 15 F5.1 d Phase [-11/11] Phase (days since maximum)
18- 23 F6.2 0.1nm W(CaII) ?=- CaII equivalent width
25- 29 F5.2 0.1nm W(SiII) ?=- SiII equivalent width
31- 36 F6.2 0.1nm W(MgII) ?=- MgII equivalent width
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 16-Aug-2011