J/ApJS/224/3 ESSENCE 6yr spectroscopic follow-up (Narayan+, 2016)
Light curves of 213 type Ia supernovae from the ESSENCE survey.
Narayan G., Rest A., Tucker B.E., Foley R.J., Wood-Vasey W.M., Challis P.,
Stubbs C., Kirshner R.P., Aguilera C., Becker A.C., Blondin S.,
Clocchiatti A., Covarrubias R., Damke G., Davis T.M., Filippenko A.V.,
Ganeshalingam M., Garg A., Garnavich P.M., Hicken M., Jha S.W.,
Krisciunas K., Leibundgut B., Li W., Matheson T., Miknaitis G., Pignata G.,
Prieto J.L., Riess A.G., Schmidt B.P., Silverman J.M., Smith R.C.,
Sollerman J., Spyromilio J., Suntzeff N.B., Tonry J.L., Zenteno A.
<Astrophys. J. Suppl. Ser., 224, 3 (2016)>
=2016ApJS..224....3N 2016ApJS..224....3N (SIMBAD/NED BibCode)
ADC_Keywords: Supernovae ; Spectroscopy ; Redshifts ; Surveys ; Reddening
Keywords: cosmology: observations; methods: data analysis; supernovae: general;
surveys
Abstract:
The Equation of State: Supernovae trace Cosmic Expansion (ESSENCE)
survey discovered 213 Type Ia supernovae at redshifts 0.1<z<0.81
between 2002 and 2008. We present their R- and I-band photometry,
measured from images obtained using the MOSAIC II camera at the CTIO
Blanco, along with rapid-response spectroscopy for each object. We use
our spectroscopic follow-up observations to determine an accurate,
quantitative classification, and precise redshift. Through an
extensive calibration program we have improved the precision of the
CTIO Blanco natural photometric system. We use several empirical
metrics to measure our internal photometric consistency and our
absolute calibration of the survey. We assess the effect of various
potential sources of systematic bias on our measured fluxes, and
estimate the dominant term in the systematic error budget from the
photometric calibration on our absolute fluxes is ∼1%.
Description:
The SN Ia search was carried out on the CTIO 4m Blanco telescope over
197 half-nights in dark and graytime between September and January
from 2002 to 2008. Science images were obtained using the MOSAIC II
camera through two primary filters (denoted R and I) similar to
Cousins RC and IC. The field of view of the system is 0.36deg2
on the sky. See section 2 for further details and subdirectory "lcs"
available on the FTP.
We obtained spectroscopic follow up for the selected ESSENCE objects
using a range of facilities including the Blue Channel spectrograph on
the MMT; IMACS on Baade and LDSS2 and LDSS3 on Clay at the Las
Campanas Observatory; GMOS on Gemini North and South; FORS1 on the 8m
Very Large Telescope (VLT); and LRIS, ESI and DEIMOS at the W. M. Keck
Observatory.
File Summary:
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FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table6.dat 121 422 Transient objects considered for follow-up
observations by the ESSENCE survey --updated
version from the author
lcs/* . 216 *Individual light curve tables in ASCII for
216 type Ia SNe candidates
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Note on lcs/* : Those light curves are for objects that we considered as SNIa
(or very likely Ia but without a spectroscopic confirmation); except for
the 3 flagged objects in table 6.
Data for other objects are available through the Open Supernova Catalog
(http://sne.space/), but were not in that paper.
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See also:
J/ApJ/799/208 : Type IIP supernovae from Pan-STARRS1 (Sanders+, 2015)
J/ApJ/795/44 : PS1 SNe Ia (0.02<z<0.7) griz light curves (Rest+, 2014)
J/AJ/147/99 : Spectroscopy of 73 stripped core-collapse SNe (Modjaz+, 2014)
J/MNRAS/444/3258 : Velocities and EW of PTF SNe Ia (Maguire+, 2014)
J/A+A/568/A22 : Joint analysis of the SDSS-II and SNLS SNe Ia (Betoule+, 2014)
J/A+A/552/A124 : SNLS & SDSS SN surveys photom. calibration (Betoule+, 2013)
J/ApJ/773/53 : Type Ia SNe spectroscopy by the CSP (Folatelli+, 2013)
J/MNRAS/435/1680 : SN Ia host galaxy properties (Johansson+, 2013)
J/MNRAS/425/1789 : Berkeley supernova Ia program. I. (Silverman+, 2012)
J/ApJS/200/12 : CfA4: light curves for 94 type Ia SNe (Hicken+, 2012)
J/AJ/143/126 : Spectroscopy of 462 nearby Type Ia supernovae (Blondin+, 2012)
J/AJ/142/156 : The CSP (DR2): photometry of SNe Ia (Stritzinger+, 2011)
J/ApJ/731/120 : Intrinsic SN Ia light curves (Mandel+, 2011)
J/MNRAS/410/1262 : Supernova Legacy Survey. Type Ia supernovae (Walker+, 2011)
J/ApJS/192/1 : Light-curve parameters from the SNLS (Conley+, 2011)
J/A+A/523/A7 : Light curves of type Ia supernovae in SNLS (Guy+, 2010)
J/ApJS/190/418 : Light curves for 165 SNe (Ganeshalingam+, 2010)
J/ApJ/722/566 : Host galaxies of SNe Ia in SDSS-II SN survey (Lampeitl+, 2010)
J/MNRAS/406/782 : Type Ia supernovae luminosities (Sullivan+, 2010)
J/AJ/139/519 : Carnegie supernova project. SNe Ia (Contreras+, 2010)
J/AJ/139/120 : Low-redshift Type-Ia supernovae (Folatelli+, 2010)
J/ApJS/185/32 : First-year SDSS-II SN results (Kessler+, 2009)
J/A+A/506/999 : Photometric Calibration of SNLS (Regnault+, 2009)
J/ApJ/700/1097 : Light curve parameters of SN Ia (Hicken+, 2009)
J/ApJ/700/331 : Light curves of type Ia supernovae (CfA3) (Hicken+, 2009)
J/ApJ/699/L139 : Spectral parameters of SNe Ia (Wang+, 2009)
J/AJ/137/3731 : ESSENCE high-redshift supernova (Foley+, 2009)
J/ApJ/689/377 : PAIRITEL SNe Ia as NIR standard candles (Wood-Vasey+, 2008)
J/ApJ/666/674 : ESSENCE supernova survey (Miknaitis+, 2007)
J/ApJ/659/122 : Improved distances to type Ia supernovae (Jha+, 2007)
J/AJ/133/403 : Light curve of 11 type Ia supernovae (Garg+, 2007)
J/AJ/131/1648 : Type Ia supernovae at high and low redshifts (Blondin+, 2006)
J/AJ/131/527 : UBVRI light curves of 44 type Ia supernovae (Jha+, 2006)
J/AJ/130/2453 : 9 high-redshift ESSENCE supernovae (Krisciunas+, 2005)
http://sne.space/ : The Open Supernova Catalog
Byte-by-byte Description of file: table6.dat
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Bytes Format Units Label Explanations
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1- 4 A4 --- ESSENCE ESSENCE identifier (aNNN)
6- 12 A7 --- SN IAU name (YYYYaa)
14- 19 A6 --- Type Object type (1)
21 A1 --- f_Type Flag on Type (2)
23- 26 A4 --- SubF Subfield identifier
28- 29 I2 --- Amp [1/16] Amplifier image number
31- 32 I2 h RAh Hour of right ascension (J2000)
34- 35 I2 min RAm Minute of right ascension (J2000)
37- 42 F6.3 s RAs Second of right ascension (J2000)
44 A1 --- DE- Sign of declination (J2000)
45- 46 I2 deg DEd Degree of declination (J2000)
48- 49 I2 arcmin DEm Arcminute of declination (J2000)
51- 56 F6.3 arcsec DEs Arcsecond of declination (J2000)
58- 63 F6.4 --- zSNID [0.001/3.6]? Heliocentric SNID spectroscopic
redshift (3)(4)
65- 69 F5.3 --- e_zSNID [0.001/0.05]? zSNID uncertainty
71- 77 F7.4 --- zGal [-0.0003/1]? Heliocentric host galaxy
redshift if available (3)
79- 84 F6.4 --- e_zGal [0/0.003]? zGal uncertainty
86- 92 F7.5 --- E(B-V) [0.019/0.043] Milky Way E(B-V) value (5)
94-121 A28 --- FileName Name of the file in subdirectory "lcs";
column added by CDS following the
files sent by the author
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Note (1): Type as follows:
Ia = Type Ia supernova, no sub-type reported (199 sources + 26 "?")
IaT = Similar to the overluminous type Ia supernovae SN 1991 T or
SN 1999aa (6 sources)
IaP = Similar to peculiar type Ia supernovae SN 2000cx or
SN 2002cx (2 sources)
Ib = Type Ib supernova, no sub-type reported (4 sources + 1 "b/c?")
Ib-pec = Type Ib supernova with peculiar spectral features (1 source)
Ic = Type Ic supernova, no sub-type reported (4 sources + 1 "?")
II = Type II supernova, no sub-type reported (8 sources + 6 "?")
IIn = Type II supernova with narrow emission lines (5 sources)
IIP = Type II supernova with a "plateau" in the light curve (8 sources)
II-pec = Type II supernova with peculiar spectral features (1 source)
PISN? = Possible pair-instability supernova
(P. Garnavich 2016, private communication) (1 source)
Gal = Galaxy, sub-types are reported in
B. E. Tucker et al. (2014, in preparation) (76 sources + 1 "?")
AGN = Active galactic nucleus (20 sources)
Unk = Not observed or could not be classified based on spectra (41 sources)
SN? = Possible supernova (3 sources)
Star = Star (4 sources)
Classifications followed by a "?" are not definitively
spectroscopically typed.
Note (2): Flag for the 3 objects with LCs which were rejected as SN Ia on
the basis of their spectra as follows:
a = r317: probably a Ia, but can't be conclusive from the spectrum
b = s372: probably a Ia but possibility of being a Ib/c was unacceptably high
c = x039: probably a Ia but host galaxy shows AGN activity
Note (3): zSNID and zGAL are reported in the heliocentric frame, and must
be converted into the cosmic microwave background (CMB) frame, while
accounting for local peculiar velocities at low-z.
Note (4): We employed the SuperNova Identification (SNID) algorithm
(Blondin & Tonry 2007ApJ...666.1024B 2007ApJ...666.1024B) to determine SN classifications
objectively and reproducibly.
See section 4.1 for further explanations.
Note (5): For this work, we have employed the Milky Way reddening values from
Schlegel et al. (1998ApJ...500..525S 1998ApJ...500..525S), rather than the updated values
provided by Schlafly et al. (2012ApJ...756..158S 2012ApJ...756..158S), to facilitate the
combination of our objects with literature samples.
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Byte-by-byte Description of file (#): lcs/*
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Bytes Format Units Label Explanations
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1- 51 A51 --- ObsID Observation identifier
54- 65 F12.6 d MJD Modified Julian Date of observation
69- 71 A3 --- Filt Passband (R4m or I4m; similar to Cousins Rc
or Ic)
79- 92 F14.10 --- Flux CTIO 4m flux value (1)
95-107 F13.10 --- e_Flux Lower uncertainty on Flux (1)
110-122 F13.10 --- E_Flux Higher uncertainty on Flux (1)
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Note (1): Fluxes and their uncertainties are normalized to a zeropoint of 25.
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History:
From electronic version of the journal
* 25-Apr-2017: Insert into VizieR
* 11-dec-2024: Declination signs corrected for 4 objects (e018, e022,
e103 and f247)
Acknowledgements:
* Gautham Narayan [National Optical Astronomy Observatory, US] who provided
the light curves associated to this paper.
* Stephane Blondin [Laboratoire d'Astrophysique de Marseille, LAM] for
coordinate corrections.
References:
Miknaitis et al. ESSENCE SN survey 2007ApJ...666..674M 2007ApJ...666..674M Cat. J/ApJ/666/674
Matheson et al. First 2yrs 2005AJ....129.2352M 2005AJ....129.2352M
Foley et al. First 4yrs 2009AJ....137.3731F 2009AJ....137.3731F Cat. J/AJ/137/3731
Wood-Vasey et al. Cosmological data 2007ApJ...666..694W 2007ApJ...666..694W
Davis at al. Cosmo. models 2007ApJ...666..716D 2007ApJ...666..716D
(End) Emmanuelle Perret [CDS] 27-Oct-2016