J/AJ/142/156 The CSP (DR2): photometry of SNe Ia (Stritzinger+, 2011)
The Carnegie Supernova Project : second photometry data release of low-redshift
type Ia supernovae.
Stritzinger M.D., Phillips M.M., Boldt L.N., Burns C., Campillay A.,
Contreras C., Gonzalez S., Folatelli G., Morrell N., Krzeminski W.,
Roth M., Salgado F., Depoy D.L., Hamuy M., Freedman W.L., Madore B.F.,
Marshall J.L., Persson S.E., Rheault J.-P., Suntzeff N.B., Villanueva S.,
Li W., Filippenko A.V.
<Astron. J., 142, 156 (2011)>
=2011AJ....142..156S 2011AJ....142..156S
ADC_Keywords: Photometry, UBV ; Photometry, ugriz ; Photometry, infrared ;
Supernovae ; Redshifts
Keywords: galaxies: distances and redshifts - supernovae: general
Abstract:
The Carnegie Supernova Project (CSP) was a five-year observational
survey conducted at Las Campanas Observatory that obtained, among
other things, high-quality light curves of ∼100 low-redshift Type Ia
supernovae (SNe Ia). Presented here is the second data release of
nearby SN Ia photometry consisting of 50 objects, with a subset of 45
having near-infrared follow-up observations. Thirty-three objects have
optical pre-maximum coverage with a subset of 15 beginning at least
five days before maximum light. In the near-infrared, 27 objects have
coverage beginning before the epoch of B-band maximum, with a subset
of 13 beginning at least five days before maximum. In addition, we
present results of a photometric calibration program to measure the
CSP optical (uBgVri) bandpasses with an accuracy of ∼1%. Finally, we
report the discovery of a second SN Ia, SN 2006ot, similar in its
characteristics to the peculiar SN 2006bt.
Description:
A complete overview of the CSP including the goals of the project, the
facilities at Las Campanas Observatory (LCO) used to conduct
photometric and spectroscopic data, and the observing procedures are
given by Hamuy et al. (2006PASP..118....2H 2006PASP..118....2H). Five observational
campaigns, each nine months in duration, were conducted between 2004
and 2009. The workhorse of the CSP was the Henrietta Swope 1m
telescope equipped with both a direct imaging CCD camera that we refer
to as SITe3 and a near-IR imager called RetroCam. Additional near-IR
imaging and limited optical observations were obtained with the du
Pont 2.5m telescope equipped with the Wide Field IR Camera (WIRC).
The SNe contained in this data release were observed from mid-2005 to
early 2009.
Optical and near-IR photometry of each local sequence in the standard
Landolt (BV; Landolt, II/183), Smith (u'g'r'i'; Smith et al.,
2002AJ....123.2121S 2002AJ....123.2121S) and Persson (JHKs; Persson et al.
1998AJ....116.2475P 1998AJ....116.2475P) photometric systems are given in Table 3. The
Y-band photometry is calibrated relative to the (Y-Ks) and (J-Ks)
color relation given by Hamuy et al. (2006PASP..118....2H 2006PASP..118....2H, see
Appendix C, Equation (C2)).
See also:
B/sn : Asiago Supernova Catalogue (Barbon+, 1999-)
II/183 : UBVRI Photometric Standards (Landolt 1992)
J/AJ/112/2408 : Light Curves of 29 SNe (Hamuy+ 1996)
J/A+A/437/789 : Restframe I-band light curves of SN Ia (Nobili+, 2005)
J/ApJ/689/377 : SNe Ia as NIR standard candles (Wood-Vasey+, 2008)
J/MNRAS/389/1577 : UBVRI absolute magnitudes of Type Ia SNe (Takanashi+, 2008)
J/ApJ/700/331 : Light curves of type Ia supernovae (CfA3) (Hicken+, 2009)
J/ApJ/700/1097 : Light curve parameters of SN Ia (Hicken+, 2009)
J/AJ/139/120 : Low-redshift Type-Ia supernovae (Folatelli+, 2010)
J/ApJS/190/418 : Light curves for 165 SNe (Ganeshalingam+, 2010)
J/AJ/139/519 : Carnegie Supernova Project. I. SNe Ia (Contreras+, 2010)
J/ApJ/731/120 : Intrinsic SN Ia light curves (Mandel+, 2011)
J/ApJ/740/92 : Light curve of SN Ia and host properties (Gupta+, 2011)
J/MNRAS/410/585 : SN 2009dc BVRI light curves (Silverman+, 2011)
J/ApJS/200/12 : CfA4: light curves for 94 type Ia SNe (Hicken+, 2012)
File Summary:
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FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1.dat 109 50 General properties of 50 SNe Ia
table3.dat 147 1733 Optical and near-IR photometry of the local
sequences in the standard system
table4.dat 85 903 Optical photometry of 50 SNe Ia in the Swope
Natural System
table5.dat 65 527 Near-IR photometry of 45 SNe Ia
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 6 A6 --- SN SN identifier
8- 9 I2 h RAh SN Hour of right ascension (J2000)
11- 12 I2 min RAm SN Minute of right ascension (J2000)
14- 18 F5.2 s RAs SN Second of right ascension (J2000)
20 A1 --- DE- SN Sign of the declination (J2000)
21- 22 I2 deg DEd SN Degree of declination (J2000)
24- 25 I2 arcmin DEm SN Arcminute of declination (J2000)
27- 31 F5.2 arcsec DEs SN Arcsecond of declination (J2000)
33- 56 A24 --- Host Identification of the host galaxy
58- 68 A11 --- TType NED Morphology of the host galaxy (1)
70- 75 F6.4 --- z [0.0055/0.0835] NED Heliocentric redshift (1)
77 A1 --- r_z Origin of redshift (2)
79- 87 A9 --- Ref Reference to the IAUC (IAU Circular) or
CBET (Central Bureau Electronic Telegrams)
reporting the discovery
89-109 A21 --- Disc Discovery individual/Group (4)
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Note (1): Host-galaxy morphology and heliocentric redshift are from the
NASA/IPAC Extragalactic Database (NED)
Note (2): Flags as follows:
d = Redshift computed via host spectra obtained by the CSP
D = Redshift from the SDSS-II SN survey
m = Redshift from Scalzo et al. (2010ApJ...713.1073S 2010ApJ...713.1073S)
Note (4): References/URLs as follows:
CHASE = http://www.das.uchile.cl/proyectoCHASE/
CSS = http://www.lpl.arizona.edu/css/
LOSS = Filippenko et al. (2001ASPC..246..121F 2001ASPC..246..121F) ;
Filipenko (2005ASPC..332...33F 2005ASPC..332...33F)
Perth = Williams (1997PASA...14..208W 1997PASA...14..208W)
ROTSE-III = Quimby (2006PhDT........13Q 2006PhDT........13Q)
Puckett = http://www.cometwatch.com
Tengra-II = http://www.tenagraobservatories.com/Discoveries.htm
SDSS-II = Frieman et al. (2008AJ....135..338F 2008AJ....135..338F)
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 2 A2 --- --- [SN]
4- 9 A6 --- SN SN identifier (YYYYaa)
11- 12 I2 --- Seq Star index number
14- 15 I2 h RAh Hour of Right Ascension (J2000)
17- 18 I2 min RAm Minute of Right Ascension (J2000)
20- 24 F5.2 s RAs Second of Right Ascension (J2000)
26 A1 --- DE- Sign of the Declination (J2000)
27- 28 I2 deg DEd Degree of Declination (J2000)
30- 31 I2 arcmin DEm Arcminute of Declination (J2000)
33- 37 F5.2 arcsec DEs Arcsecond of Declination (J2000)
39- 44 F6.3 mag umag [14.133/29.533]? The u' band magnitude
46- 48 I3 mmag e_umag [8/298]? Uncertainty in umag (1)
50- 55 F6.3 mag gmag ? The g' band magnitude
57- 59 I3 mmag e_gmag ? Uncertainty in gmag (1)
61- 66 F6.3 mag rmag ? The r' band magnitude
68- 70 I3 mmag e_rmag ? Uncertainty in rmag (1)
72- 77 F6.3 mag imag ? The i' band magnitude
79- 81 I3 mmag e_imag ? Uncertainty in imag (1)
83- 88 F6.3 mag Bmag ? The B band magnitude
90- 92 I3 mmag e_Bmag ? Uncertainty in B (1)
94- 99 F6.3 mag Vmag ? The V band magnitude
101-103 I3 mmag e_Vmag ? Uncertainty in Vmag (1)
105-110 F6.3 mag Ymag ? The Y band magnitude
112-114 I3 mmag e_Ymag ? Uncertainty in Ymag (1)
116-121 F6.3 mag Jmag ? The J band magnitude
123-125 I3 mmag e_Jmag ? Uncertainty in Jmag (1)
127-132 F6.3 mag Hmag ? The H band magnitude
134-136 I3 mmag e_Hmag ? Uncertainty in Hmag (1)
138-143 F6.3 mag Kmag ? The KS band magnitudes
145-147 I3 mmag e_Kmag ? Uncertainty in Kmag (1)
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Note (1): Uncertainties given in thousandths of a magnitude correspond to
a root mean square (rms) of the magnitudes obtained on photometric
nights (the weighted average of the instrumental errors computed from
several measurements obtained over the course of of multiple
photometric nights).
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 2 A2 --- --- [SN]
4- 9 A6 --- SN SN identifier (YYYYaa)
11- 17 F7.2 d JD [671.66/1976.67] Julian Date (JD-2453000)
19 A1 --- f_JD [a] Images obtained with the du Pont telescope
21- 26 F6.3 mag umag [13.645/22.369]? The u band magnitude
28- 30 I3 mmag e_umag [8/539]? Uncertainty in umag (G1)
32- 37 F6.3 mag gmag ? The g band magnitude
39- 41 I3 mmag e_gmag ? Uncertainty in gmag (G1)
43- 48 F6.3 mag rmag ? The r band magnitude
50- 52 I3 mmag e_rmag ? Uncertainty in rmag (G1)
54- 59 F6.3 mag imag ? The i band magnitude
61- 63 I3 mmag e_imag ? Uncertainty in imag (G1)
65- 70 F6.3 mag Bmag ? The B band magnitude
72- 74 I3 mmag e_Bmag ? Uncertainty in Bmag (G1)
76- 81 F6.3 mag Vmag ? The V band magnitude
83- 85 I3 mmag e_Vmag ? Uncertainty in Vmag (G1)
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Byte-by-byte Description of file: table5.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 2 A2 --- --- [SN]
4- 9 A6 --- SN SN identifier (YYYYaa)
11- 17 F7.2 d JD [672.6/1975.71] Julian Date (JD-2453000)
19- 24 F6.3 mag Ymag [13.178/21.474]? The Y band magnitude
26- 28 I3 mmag e_Ymag [19/454]? Uncertainty in Ymag (G1)
30- 35 F6.3 mag Jmag ? The J band magnitude
37- 39 I3 mmag e_Jmag ? Uncertainty in Jmag (G1)
41- 46 F6.3 mag Hmag ? The H band magnitude
48- 50 I3 mmag e_Hmag ? Uncertainty in Hmag (G1)
52- 57 F6.3 mag Kmag ? The KS band magnitude
59- 61 I3 mmag e_Kmag ? Uncertainty in Kmag (G1)
63- 65 A3 --- Tel Telescope code (1)
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Note (1): Telescope code as follows:
DUP = the du 2.5-m Pont telescope;
SWO = Swope 1-m telescope.
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Global notes:
Note (G1): Uncertainties are given in thousandths of a magnitude.
The uncertainties correspond to the sum in quadrature of the
instrumental error and the nightly zero-point error.
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History:
From electronic version of the journal
References:
Contreras et al. Paper I. 2010AJ....139..519C 2010AJ....139..519C Cat. J/AJ/139/519
(End) Greg Schwarz [AAS], Sylvain Guehenneux [CDS] 12-Mar-2013