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J/ApJ/412/479       Intracluster gas temperatures catalog    (David+, 1993)

A catalog of intracluster gas temperatures. David L.P., Slyz A., Jones C., Forman W., Vrtilek S.D. <Astrophys. J., 412, 479-488 (1993)> =1993ApJ...412..479D (SIMBAD/NED BibCode)
ADC_Keywords: Clusters, galaxy ; X-ray sources ; Redshifts Keywords: catalogs - galaxies: clustering - intergalactic medium - X-rays: galaxies Abstract: We have searched the Einstein Monitor Proportional Counter (MPC) data base for observations of clusters of galaxies. By coadding the MPC spectra obtained during all pointed observations of clusters with IPC count rates greater than 0.1 counts/s, we have obtained sufficient photon statistics to estimate the X-ray temperature of 84 clusters. Combining the MPC results with EXOSAT and Ginga results reported in the literature yields a combined sample of 104 clusters with known X-ray temperatures. One of the best studied X-ray correlations between clusters is that between their X-ray luminosity and gas temperature. We show that the best-fit power-law relation for our combined cluster sample can be explained by the observed increase in the gas-to-stellar mass ratio between low- and high-temperature clusters. The statistical significance of any evolution in our combined X-ray sample has been examined and compared with the statistical properties of clusters culled from optical catalogs. We find that there is strong evidence for a decrease in the X-ray luminosity of optically rich clusters beyond z approximately about 0.06. This result is used to estimate the normalization of the primordial power spectrum of density fluctuations. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 89 122 Combined Cluster Sample
See also: IX/13 : The 2E Catalogue (Harris+ 1994) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 11 A11 --- Cluster Cluster designation 14 A1 --- Notes [abc] Notes (1) 15 A1 --- n_Cluster [*] Note on cluster (2) 17- 21 F5.4 --- z Redshift (3) 23- 27 F5.2 10+20cm-2 NH Hydrogen column density 29- 33 F5.2 keV T ? Temperature 34 A1 -- u_T Uncertainty flag on T 35 A1 --- lET Limit flag on E_T (rms error in E_T) 36- 40 F5.2 keV E_T ? 1σ error on T (upper limit) 42- 46 F5.2 keV e_T ? 1σ error on T (lower limit) 48 A1 --- l_E90T Limit flag on E90T 49- 53 F5.2 keV E90T ? 90% confidence limit on T (upper limit) 55- 59 F5.2 keV e90T ? 90% confidence limit on T (lower limit) 62- 69 E8.2 mW/m2 F2-10kev Flux at 2-10keV 72- 79 E8.2 10-7W L2-10kev Luminosity at 2-10keV 82- 89 E8.2 10-7W Lbol Bolometric luminosity
Note (1): Notes: a refer to HEAO-1 data, b refer to Exosat data, c refer to Ginga data. All other entries in the Table result from analysis of MPC data. Note (2): *: Cluster at low galactic latitudes (|bII|>20°) Note (3): z for Virgo was replaced from "8Mpc" to 0.003 in this electronic version
Acknowledgements: Heinz Andernach (catalog A163 in his collection)
(End) Patricia Bauer [CDS] 30-Nov-2003
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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