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
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:
FileName Lrecl Records Explanations
ReadMe 80 . This file table3.dat 90 138 Types and redshifts of ESSENCE supernovae
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
Bytes Format Units Label Explanations
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
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). 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.
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
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