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J/ApJ/612/652    Dimensionless coordinate distances to supernovae  (Daly+, 2004)

Direct determination of the kinematics of the universe and properties of the dark energy as functions of redshift. Daly R.A., Djorgovski S.G. <Astrophys. J., 612, 652-659 (2004)> =2004ApJ...612..652D
ADC_Keywords: Supernovae ; Redshifts ; Galaxies, radio Keywords: cosmological parameters - cosmology: observations - cosmology: theory - dark matter - equation of state Abstract: Understanding the nature of dark energy, which appears to drive the expansion of the universe, is one of the central problems of physical cosmology today. In an earlier paper (Daly & Djorgovski, 2003ApJ...597....9D) we proposed a novel method to determine the expansion rate E(z) and the deceleration parameter q(z) in a largely model-independent way, directly from the data on coordinate distances y(z). Here we expand this methodology to include measurements of the pressure of dark energy p(z), its normalized energy density fraction f(z), and the equation-of-state parameter w(z). We then apply this methodology to a new, combined data set of distances to supernovae and radio galaxies. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 37 20 Radio Galaxy Dimensionless Coordinate Distances table2.dat 38 186 SNe Ia Dimensionless Coordinate Distances
Byte-by-byte Description of file: table1.dat table2.dat
Bytes Format Units Label Explanations
1- 9 A9 --- Name Source name (of galaxy of supernova) 11- 16 F6.4 --- z Redshift 18- 23 F6.4 --- y The dimensionless coordinate distance (1) 25- 30 F6.4 --- e_y The 1σ error in y 32- 37 A6 --- Sample Sample rating ("Gold" or "Silver")
Note (1): The dimensionless coordinate distance is obtained from the luminosity distance: (H0/c)*dL/(1+z).
History: From electronic version of the journal References: Daly and Djorgovski, Paper I 2003ApJ...597....9D
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 23-Feb-2005
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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