J/ApJ/666/674 ESSENCE supernova survey (Miknaitis+, 2007)
The ESSENCE supernova survey: survey optimization, observations, and
supernova photometry.
Miknaitis G., Pignata G., Rest A., Wood-Vasey W.M., Blondin S., Challis P.,
Smith R.C., Stubbs C.W., Suntzeff N.B., Foley R.J., Matheson T.,
Tonry J.L., Aguilera C., Blackman J.W., Becker A.C., Clocchiatti A.,
Covarrubias R., Davis T.M., Filippenko A.V., Garg A., Garnavich P.M.,
Hicken M., Jha S., Krisciunas K., Kirshner R.P., Leibundgut B., Li W.,
Miceli A., Narayan G., Prieto J.L., Riess A.G., Salvo M.E., Schmidt B.P.,
Sollerman J., Spyromilio J., Zenteno A.
<Astrophys. J., 666, 674-693 (2007)>
=2007ApJ...666..674M 2007ApJ...666..674M
ADC_Keywords: Surveys ; Supernovae
Keywords: cosmology: observations - methods: data analysis -
supernovae: general - surveys
Abstract:
We describe the implementation and optimization of the ESSENCE
supernova survey, which we have undertaken to measure the dark energy
equation-of-state parameter, w=P/(ρc2). We present a method for
optimizing the survey exposure times and cadence to maximize our
sensitivity to w for a given fixed amount of telescope time. For our
survey on the CTIO 4m telescope, measuring the luminosity distances
and redshifts for supernovae at modest redshifts (z∼0.5±0.2) is
optimal for determining w. We describe the data analysis pipeline
based on using reliable and robust image subtraction to find
supernovae automatically and in nearly real time.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table3.dat 90 138 Types and redshifts of ESSENCE supernovae
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See also:
B/sn : Asiago Supernova Catalogue (Barbon et al., 1999-)
J/AJ/130/2453 : 9 high-redshift ESSENCE supernovae (Krisciunas+, 2005)
Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 6 A6 --- SN Supernova name (YYYYaa)
8 A1 --- f_SN [abcd] Missing SN type or redshift (1)
10- 11 I2 h RAh Right ascension (J2000)
13- 14 I2 min RAm Right ascension (J2000)
16- 20 F5.2 s RAs Right ascension (J2000)
22 A1 --- DE- Declination sign (J2000)
23- 24 I2 deg DEd Declination (J2000)
26- 27 I2 arcmin DEm Declination (J2000)
29- 33 F5.2 arcsec DEs Declination (J2000)
35- 38 A4 --- ESSENCE ESSENCE ID (aNNN)
40- 41 A2 --- Type ?=- Supernova type
43- 49 A7 --- SType ?=- Sub-type
50- 54 F5.1 % PSType ?=- Subtype probability
56- 60 F5.1 % Ia ?=- Type Ia probability
62- 66 F5.1 % Ib/c ?=- Type Ib/c probability
68- 72 F5.1 % II ?=- Type II probability
74- 78 F5.3 --- zGal ?=- Galaxy redshift
80- 84 F5.3 --- zSN ?=- Supernove redshift
86- 90 F5.3 --- e_zSN ?=- rms uncertainty on zSN
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Note (1): Notes as follows:
a = A secure type was determined, but not a secure subtype: there was
a majority of correlations with one subtype, but the best match
template was of a different subtype.
b = Only one template that exceeds the cutoff for "good" correlations:
the reported redshift is that of the best match template (as
opposed to the median redshift), and the associated error is the
formal redshift error for that template (see Blondin & Tonry
2007ApJ...666.1024B 2007ApJ...666.1024B).
c = No "good" correlations for this object. No type or redshift
information is reported.
d = While there were "good" correlations for this object, a secure type
could not be determined, and we report no redshift for this object.
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History:
* 08-Oct-2009: From electronic version of the journal
* 18-Mar-2010: Identical SN names were assigned to different supernovae;
these duplicated names were removed.
(End) Patricia Vannier [CDS] 08-Oct-2009